7x7 Dental Implant & Oral Surgery

According to our open methodology, this clinic scored 58.3/100 for transparency, reputation, service accessibility, and digital visibility.

Overall rank: #13 of 15 ranked clinics · Last checked: 26 August 2026

58.3/100

Positions by Rating Profile

  • Overall Transparency & Trust#1358.3/100
  • Best for Expats#1352.8/100
  • Best for Dental Implants#1250/100
  • Best for Emergency Dental Carenot ranked
  • Best Price Transparency#1341.1/100
  • Best English-speaking Clinics#1357/100
  • Best for Families / Children#658.4/100
  • Sleep Dentistry (GA / deep sedation)#258.3/100

General Anaesthesia & Deep Sedation

Whether the clinic documents treatment under general anaesthesia or deep / twilight sedation — "sleep dentistry", where the patient is asleep and unaware (does not feel, see, or hear the procedure). Ordinary conscious sedation, where the patient stays awake and responsive, does not count here. This is informational and does not affect the transparency score.

  • ✓ General anaesthesia / deep sedation (sleep dentistry) — General anaesthesia / deep sedation documented Site states surgeons are board certified/eligible in Dental Anesthesiology and that facility/procedure rooms are 'inspected and certified for general anesthesia'. [7x7-dental-implant-oral-surgery-sedation]

See all clinics offering sleep dentistry →

Summary

Oral and maxillofacial surgery group with multiple San Francisco locations, operating since 1980. The website lists a team of board-certified oral surgeons, services and photos. Prices are not published.

Prices not published (USD). Additional locations at Van Ness, Stonestown and South San Francisco. English and Spanish noted.

Strengths

  • Information Transparency: 20 of 20 points.
  • Reputation & Reviews: 17.5 of 20 points.
  • No red flags identified in public sources.

Weaknesses

  • Price Transparency: 0 of 15 verifiable points (missing: prices or price ranges published; cleaning price listed; filling price listed; crown price listed; implant price listed; consultation price listed; x-ray / imaging price listed)

Score Breakdown

Every criterion below is scored from public sources. ✓ verified yes · ✗ verified no / not found · ◐ partial · ? unverified (scores 0, not a negative finding).

Information Transparency

20 / 20

Whether basic facts about the clinic - its team, premises, services, and location - are publicly verifiable.

✓ Has a working website The clinic's website, 7x7oralsurgery.com, presents its surgeons, procedures, four offices and contacts. [7x7-dental-implant-oral-surgery-i9] 4/4
✓ Dentist names listed The clinic's website names its six oral surgeons, each on his or her own page. [7x7-dental-implant-oral-surgery-i9-2] [7x7-dental-implant-oral-surgery-doclic] [7x7-dental-implant-oral-surgery-doclic-2] [7x7-dental-implant-oral-surgery-doclic-3] 3/3
✓ Dentist specializations listed The clinic's website presents all six as board-certified or board-eligible oral and maxillofacial surgeons, with board status on their own pages. [7x7-dental-implant-oral-surgery-i9-2] [7x7-dental-implant-oral-surgery-i9-3] 2/2
✓ Real clinic photos The clinic's About page shows its surgeons at work in the office, alongside portraits of the team. [7x7-dental-implant-oral-surgery-i9-2] 2/2
✓ Service list published The clinic's website lists its procedures, from wisdom-teeth removal, extractions and implants to bone grafting, facial trauma and sleep apnea. [7x7-dental-implant-oral-surgery-i9] 3/3
✓ Clear contact details Each office's phone, e.g. West Portal (415) 661-6006, and e-mail [email protected] on the clinic's website. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-4] 2/2
✓ English website version The clinic's website is in English. [7x7-dental-implant-oral-surgery-i9] 2/2
✓ Address and map published Addresses of all four offices, including 99 W Portal Ave, with Google Maps links on the clinic's website. [7x7-dental-implant-oral-surgery-i9-4] [7x7-dental-implant-oral-surgery-i9] 2/2

Price Transparency

0 / 15

Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.

✗ Prices or price ranges published No price list: the clinic's cost page says fees are set at the first visit, and no page of its website gives a price. [7x7-dental-implant-oral-surgery-i9-5] [7x7-dental-implant-oral-surgery-i9] 0/3
✗ Cleaning price listed No cleaning price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2
✗ Filling price listed No filling price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2
✗ Crown price listed No crown price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2
✗ Implant price listed No implant price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2
✗ Consultation price listed No consultation price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2
✗ X-ray / imaging price listed No X-ray price on the clinic's website, whose cost page says fees are set at the first visit. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-5] 0/2

Reputation & Reviews

17.5 / 20

Public review signals. The Google rating is adjusted with a Bayesian prior (rating 4.0, weight 25) so a 5.0 from a handful of reviews does not outrank a 4.8 from hundreds.

✓ Google rating (Bayesian-adjusted) as of 2026-08-26 [7x7-dental-implant-oral-surgery-deepen] 6/6
✓ Google review volume as of 2026-08-26 [7x7-dental-implant-oral-surgery-deepen] 3/3
✓ Review recency Most recent visible reviews dated 'a month ago' / '2 months ago' as of 2026-08-26. [7x7-dental-implant-oral-surgery-deepen] 3/3
✓ Clinic responds to reviews The owner replies to Google reviews: 10 of the 10 reviews read carry an owner reply, 7 of them recent (within the last 12 months), the latest reply dated 2026-10-01. [7x7-dental-implant-oral-surgery-deepen-8] 2/2
✗ No recurring complaints 3 of the five lowest-rated Google reviews read concern charges and billing disputes (a questioned charge at the front desk, $500 for a two-minute consultation, an insurance billing mix-up) (dated 2021-04, 2023-05 and 2025-01); 1–2★ ratings are 6 of 621 (1.0 %). [7x7-dental-implant-oral-surgery-deepen-8] 0/2
✓ No suspicious review patterns No burst and no templated texts: the 10 reviews read (dated 2021-04-21 to 2026-10-01) fall on 9 different days, at most 3 five-star reviews fall within any 3 days, and no two open with the same wording. [7x7-dental-implant-oral-surgery-deepen-8] 2/2
✓ Active Facebook presence Facebook page "7x7 Dental Implant and Oral Surgery Specialists" (450 followers), linked from the clinic's website and posting in 2026. [7x7-dental-implant-oral-surgery-i9-6] 1/1
? TripAdvisor presence 0/0.5
✓ Other review platforms Its surgeon Dr. Dean Duncan and the practice have Healthgrades pages at 99 West Portal Ave, with no reviews yet. [7x7-dental-implant-oral-surgery-platforms] [7x7-dental-implant-oral-surgery-platforms-2] 0.5/0.5

Medical Infrastructure

7.5 / 15

The range of publicly documented equipment and services. This measures documented availability, not clinical quality.

? On-site X-ray 0/2
✓ CBCT (3D imaging) The clinic's 3D Scanning page documents cone-beam CT for diagnosis and treatment planning. [7x7-dental-implant-oral-surgery-i9-9] 2/2
✓ Implantology Dental implants have their own section of pages on the clinic's website. [7x7-dental-implant-oral-surgery-i9-10] 2/2
✗ Orthodontics No braces or aligners on the clinic's website: it is an oral surgery practice that works with patients' orthodontists. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-11] 0/2
✓ Oral surgery Wisdom-teeth removal, extractions, bone grafting and jaw surgery are among the clinic's procedures. [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-12] 2/2
✓ Pediatric dentistry The clinic's pediatric page offers children frenectomy, extraction of baby teeth and treatment of impacted canines. [7x7-dental-implant-oral-surgery-i9-11] 1.5/1.5
? Emergency care 0/1.5
? Works with international patients 0/2

Communication & Service

3.5 / 10

How easy it is to contact the clinic, get answers, and book - especially for international patients.

✗ WhatsApp / LINE available No WhatsApp or LINE contact on the clinic's website: office phones, e-mail and forms only. [7x7-dental-implant-oral-surgery-i9] 0/2
? Response speed 0/1.5
✓ English spoken The clinic's website is in English, with patient pages also in Spanish, Mandarin, Korean, Russian, Tagalog and Vietnamese. [7x7-dental-implant-oral-surgery-i9] 2.5/2.5
? Pre-visit consultation possible 0/1.5
✓ Clear service explanations Each procedure page explains what it is and how it is done, e.g. wisdom-teeth removal and implants. [7x7-dental-implant-oral-surgery-i9-12] [7x7-dental-implant-oral-surgery-i9-10] 1/1
? Convenient opening hours 0/1.5

AI & Search Visibility

4 / 10

Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist San Francisco", "English speaking dentist San Francisco", "dental implants San Francisco", "emergency dentist San Francisco", "San Francisco dental clinic for expats".

✗ Mentioned for: best dentist San Francisco [7x7-dental-implant-oral-surgery-deepen-2] 0/1
✗ Mentioned for: English speaking dentist San Francisco [7x7-dental-implant-oral-surgery-deepen-3] 0/1
✓ Mentioned for: dental implants San Francisco [7x7-dental-implant-oral-surgery-deepen-4] 1/1
✗ Mentioned for: emergency dentist San Francisco [7x7-dental-implant-oral-surgery-deepen-5] 0/1
✗ Mentioned for: San Francisco dental clinic for expats [7x7-dental-implant-oral-surgery-deepen-6] 0/1
✓ Structured data on website JSON-LD on the homepage declares Organization and LocalBusiness. [7x7-dental-implant-oral-surgery-deepen-7] 1.5/1.5
? Google indexing quality 0/2
✓ Dedicated service pages Each procedure on the clinic's website has its own page (implants, wisdom teeth, bone grafting and others). [7x7-dental-implant-oral-surgery-i9] [7x7-dental-implant-oral-surgery-i9-10] [7x7-dental-implant-oral-surgery-i9-12] 1.5/1.5

Licensing & Credentials

Whether the clinic publishes its operating licence and the dentists working there together with their professional licence numbers. A verified “not published” is recorded as a red flag; data we have not checked yet is shown as unverified and carries no penalty.

Clinic operating licence: not checked against public sources yet — unverified, no penalty

Dentists & professional licences

DentistSpecializationLicence No.Notes
Dr. Dean L. Duncan, DDS [7x7-dental-implant-oral-surgery-i9-13] [7x7-dental-implant-oral-surgery-doclic]Oral & maxillofacial surgery25882California dental licence number as the dentist lists it in the federal NPI Registry (NPI 1427179613); taken from that record, not from the Dental Board of California.
Dr. Eric M. Scharf, DDS [7x7-dental-implant-oral-surgery-i9-14] [7x7-dental-implant-oral-surgery-doclic-2]Oral & maxillofacial surgery51135California dental licence number as the dentist lists it in the federal NPI Registry (NPI 1043346174); taken from that record, not from the Dental Board of California.
Dr. Mugdha Patwardhan, DDS, MD, MPH [7x7-dental-implant-oral-surgery-i9-3]Oral & maxillofacial surgerynot verified—
Dr. Len Tolstunov, DDS, DMD [7x7-dental-implant-oral-surgery-i9-15] [7x7-dental-implant-oral-surgery-doclic-3]Oral & maxillofacial surgery40500California dental licence number as the dentist lists it in the federal NPI Registry (NPI 1255487179); taken from that record, not from the Dental Board of California.
Dr. Andrew J. Morrow, DDS [7x7-dental-implant-oral-surgery-i9-16]Oral & maxillofacial surgerynot verified—
Dr. Dominique Mahal, DDS [7x7-dental-implant-oral-surgery-i9-17]Oral & maxillofacial surgerynot verified—

Dentists are named; their licence numbers have not been checked against public sources yet — unverified, no penalty.

Red Flags

No red flags identified in the public sources we reviewed.

Data We Could Not Verify

  • Reputation & Reviews: TripAdvisor presence
  • Medical Infrastructure: On-site X-ray
  • Medical Infrastructure: Emergency care
  • Medical Infrastructure: Works with international patients
  • Communication & Service: Response speed
  • Communication & Service: Pre-visit consultation possible
  • Communication & Service: Convenient opening hours
  • AI & Search Visibility: Google indexing quality

Unverified items score 0 points but are not treated as negative findings. If you can document any of them, please send a correction.

Contact Information

Websitehttps://www.7x7oralsurgery.com/
Phone(415) 661-6006
Facebookhttps://www.facebook.com/7x7oralsurgery
Google MapsMap listing
Address99 W Portal Ave, San Francisco, CA 94127, USA

Contact details are provided for identification only and may change; verify with the clinic directly.

Sources

IDSourceWhat it supportsAccessed
7x7-dental-implant-oral-surgery-doclichttps://npiregistry.cms.hhs.gov/provider-view/1427179613NPPES record for DEAN LESLIE DUNCAN, DDS (NPI 1427179613, status Active) lists CA taxonomy 'Dentist, Oral and Maxillofacial Surgery' with license 25882, address 48 Vicente St, San Francisco - same city as, near, the clinic's West Portal Ave address; unique name match.2026-08-25
7x7-dental-implant-oral-surgery-doclic-2https://npiregistry.cms.hhs.gov/provider-view/1043346174NPPES record for ERIC MICHAEL SCHARF, DDS (NPI 1043346174, status Active) lists CA taxonomy 'Dentist, Oral and Maxillofacial Surgery' with license 51135, practice address 99 W Portal Ave, San Francisco - exact match to the clinic's address.2026-08-25
7x7-dental-implant-oral-surgery-doclic-3https://npiregistry.cms.hhs.gov/provider-view/1255487179NPPES record for LEONID A TOLSTUNOV, DDS, DMD (NPI 1255487179, status Active), professional name 'Len Tolstunov', lists CA taxonomy 'Dentist, Oral and Maxillofacial Pathology' with license 40500, practice address 99 W Portal Ave, San Francisco - exact match to the clinic's address.2026-08-25
7x7-dental-implant-oral-surgery-deepenhttps://www.google.com/maps/place/7x7+Dental+Implant+%26+Oral+Surge…Google rating 4.9 (596 reviews) as of 2026-08-26 for '7x7 Dental Implant & Oral Surgery Specialists of San Francisco', 99 W Portal Ave.2026-08-26
7x7-dental-implant-oral-surgery-deepen-2search:best dentist San FranciscoAI/search visibility scout 2026-08-26: not present in top results2026-08-26
7x7-dental-implant-oral-surgery-deepen-3search:english speaking dentist San FranciscoAI/search visibility scout 2026-08-26: not present in top results2026-08-26
7x7-dental-implant-oral-surgery-deepen-4search:dental implants San FranciscoAI/search visibility scout 2026-08-26: 7x7oralsurgery.com listed among organic results and 'Schedule 7x7 Dental appointment' shown as a related-search chip.2026-08-26
7x7-dental-implant-oral-surgery-deepen-5search:emergency dentist San FranciscoAI/search visibility scout 2026-08-26: not present in top results2026-08-26
7x7-dental-implant-oral-surgery-deepen-6search:dentist for expats San FranciscoAI/search visibility scout 2026-08-26: not present in top results2026-08-26
7x7-dental-implant-oral-surgery-sedationhttps://www.7x7oralsurgery.com/Homepage: 'Our surgeons are Board Certified or Board Eligible in both Oral and Maxillofacial Surgery and Dental Anesthesiology' and 'The facility and procedure rooms are inspected and certified for general anesthesia.'2026-08-26
7x7-dental-implant-oral-surgery-i9https://www.7x7oralsurgery.com/The clinic's website, read 2026-10-01 (more than 80 pages): a procedures menu - wisdom teeth removal, full-arch restoration, bone grafting, tooth extractions, impacted canines, oral pathology, stem cell banking, BOTOX, pediatric dentistry, facial trauma, pre-prosthetic surgery, distraction osteogenesis, sleep apnea and tooth replacement options - each with its own page; pages for its six surgeons; four offices (West Portal at 99 W Portal Ave, Van Ness, Stonestown and South San Francisco) with phones, hours and Google Maps links; e-mail [email protected]; patient pages also in Spanish, Mandarin, Korean, Russian, Tagalog and Vietnamese; links to its Facebook and Instagram pages; no price figure and no WhatsApp contact2026-10-01
7x7-dental-implant-oral-surgery-i9-2https://www.7x7oralsurgery.com/about/Page "About Us", read 2026-10-01: Dr. Dean Duncan, Dr. Eric Scharf, Dr. Mugdha Patwardhan, Dr. Len Tolstunov, Dr. Andrew Morrow and Dr. Dominique Mahal, all board-certified or board-eligible oral surgeons; a photo of Dr. Scharf and Dr. Patwardhan in 7x7 scrubs in the office corridor, and portraits of the team2026-10-01
7x7-dental-implant-oral-surgery-i9-3https://www.7x7oralsurgery.com/mugdha-patwardhan-dds-md-mph/Page "Meet Mugdha Patwardhan, DDS, MD, MPH", read 2026-10-01: board certified by the American Board of Oral & Maxillofacial Surgery2026-10-01
7x7-dental-implant-oral-surgery-i9-4https://www.7x7oralsurgery.com/contact/Contact page, read 2026-10-01: West Portal, 99 W Portal Ave, (415) 661-6006, Monday 9:00 AM-5:00 PM, Tuesday and Thursday 8:00 AM-5:00 PM, Wednesday and Friday 8:00 AM-4:00 PM; Van Ness, Stonestown and South San Francisco offices with their addresses and phones2026-10-01
7x7-dental-implant-oral-surgery-i9-5https://www.7x7oralsurgery.com/dental-implants-san-francisco-ca/cos…Page "Cost of Dental Implants", read 2026-10-01: the total cost is discussed at the first visit; no price figure2026-10-01
7x7-dental-implant-oral-surgery-i9-6https://www.facebook.com/7x7oralsurgery/Facebook page "7x7 Dental Implant and Oral Surgery Specialists", category Oral Surgeon, read 2026-10-01: 450 followers; linked from the clinic's website; intro naming its oral and maxillofacial surgeons; newest post dated 2026-09-162026-10-01
7x7-dental-implant-oral-surgery-i9-9https://www.7x7oralsurgery.com/3d-scanning/Page "3D Scanning", read 2026-10-01: cone-beam CT (a CBCT video) used for diagnosis and treatment planning, with less radiation than conventional X-rays2026-10-01
7x7-dental-implant-oral-surgery-i9-10https://www.7x7oralsurgery.com/dental-implants-san-francisco-ca/Page "Dental Implants", read 2026-10-01: what implants are, the treatment steps and replacement options2026-10-01
7x7-dental-implant-oral-surgery-i9-11https://www.7x7oralsurgery.com/pediatric-dentistry-san-francisco-ca/Page "Pediatric Dentistry", read 2026-10-01: for children - frenectomy, extraction of baby teeth, and expose-and-bond of impacted canines done with the child's orthodontist - and anesthesia options for children2026-10-01
7x7-dental-implant-oral-surgery-i9-12https://www.7x7oralsurgery.com/wisdom-teeth-removal-san-francisco-ca/Page "Wisdom Teeth Removal", read 2026-10-01: why wisdom teeth are removed and how the surgery and recovery go2026-10-01
7x7-dental-implant-oral-surgery-i9-13https://www.7x7oralsurgery.com/dean-l-duncan-dds/Page "Meet Dean L. Duncan, DDS", read 2026-10-01: oral and maxillofacial surgeon at the practice2026-10-01
7x7-dental-implant-oral-surgery-i9-14https://www.7x7oralsurgery.com/eric-m-scharf-dds/Page "Meet Eric M. Scharf, DDS", read 2026-10-01: oral and maxillofacial surgeon at the practice2026-10-01
7x7-dental-implant-oral-surgery-i9-15https://www.7x7oralsurgery.com/len-tolstunov-dds-dmd/Page "Meet Len Tolstunov, DDS, DMD", read 2026-10-01: oral and maxillofacial surgeon at the practice2026-10-01
7x7-dental-implant-oral-surgery-i9-16https://www.7x7oralsurgery.com/andrew-morrow-dds/Page "Meet Andrew J. Morrow, DDS", read 2026-10-01: board certified by the American Board of Oral & Maxillofacial Surgery, with training in anesthesia and sedation2026-10-01
7x7-dental-implant-oral-surgery-i9-17https://www.7x7oralsurgery.com/dominique-mahal-dds/Page "Meet Dominique Mahal, DDS", read 2026-10-01: a board-certified oral and maxillofacial surgeon, Diplomate of the American Board of Oral and Maxillofacial Surgeons2026-10-01
7x7-dental-implant-oral-surgery-platformshttps://www.healthgrades.com/physician/dr-dean-duncan-3gfslHealthgrades profile of Dr. Dean Duncan, DDS, 7X7 Oral Surgery, 99 West Portal Ave, San Francisco, phone (415) 661-6006 — the practice's address and number: no ratings yet, with a "Write a Review" control (checked 2026-10-01)2026-10-01
7x7-dental-implant-oral-surgery-platforms-2https://www.healthgrades.com/group-directory/ca-california/san-fran…Healthgrades office page "7X7 Dental Implant & Oral Surgery Specialists", San Francisco, phone (415) 661-6006 (checked 2026-10-01)2026-10-01
7x7-dental-implant-oral-surgery-deepen-7https://www.7x7oralsurgery.com/Homepage HTML read on 2026-10-02: JSON-LD declares the types Organization and LocalBusiness, alongside WebPage and WebSite.2026-10-02
7x7-dental-implant-oral-surgery-deepen-8https://www.google.com/maps?cid=1674611715853255101&hl=enGoogle listing "7x7 Dental Implant & Oral Surgery Specialists of San Francisco" (Oral and maxillofacial surgeon; 99 W Portal Ave, San Francisco, CA 94127, United States), read 2026-10-02 in 2 review orders (lowest-rated first, newest first): 4.9 from 621 reviews (1★ 6 / 2★ 0 / 3★ 3 / 4★ 4 / 5★ 608); 10 distinct reviews read, dated 2021-04-21 to 2026-10-01, 10 with an owner reply.2026-10-02

Change History

DateChange
2026-10-02Read the clinic's Google listing on 2026-10-02 in 2 review orders (10 distinct reviews, dated 2021-04-21 to 2026-10-01; 4.9 from 621): owner replies true; recurring complaints true; suspicious review patterns false.
2026-10-02Read the clinic's website HTML on 2026-10-02: structured data: present.
2026-08-26Recorded sedation / general anaesthesia availability (informational): documented as available. Site states surgeons are board certified/eligible in Dental Anesthesiology and that facility/procedure rooms are 'inspected and certified for general anesthesia'.
2026-08-26Deepen 2026-08-26: rechecked website/contacts/Google reputation via live Google Maps visit (rating 4.9, 596 reviews) and operating status; added external sources (Maps place page + NPPES registry citations); ran 5-query AI/search visibility scout; no uncited sources existed to triage.
2026-08-25License verification 2026-08-25 against NPPES NPI Registry: Dean Duncan (lic. 25882), Eric Scharf (lic. 51135, exact address match) and Len Tolstunov (lic. 40500, exact address match, listed professionally as 'Len Tolstunov') found; Mugdha Patwardhan found at the exact clinic address but NPPES lists only a New York license on file (no CA license), left null; Andrew Morrow and Dominique Mahal not found under any name searched, left null. No clinic-level NPI found.
2026-07-08Initial data collection.

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