David Yoonseok Ahn, DMD
Oral and Maxillofacial Surgery (Dentist) · San Francisco, CA
David Yoonseok Ahn, DMD is an oral and maxillofacial surgery (dentist) with a practice address in San Francisco, California, and NPI 1265865216, issued on Aug 14, 2013. Check the license (California 104284, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David Yoonseok Ahn
- Credential
- DMD
- Primary taxonomy
- Oral and Maxillofacial Surgery (Dentist) 1223S0112X
- License number
- 104284 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 Clement St, San Francisco, CA 94121
- Phone
- (415) 221-4810
- Enumerated
- Aug 14, 2013
- Record last updated
- Jun 3, 2026
- Entity
- Type 1 · individual
8 nearest oral and maxillofacial surgery (dentist) records → All 987 in California → Look up another NPI →
Also registered at 4150 Clement St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Abram, BAPsychologist1326540436
- Gary Abrams, M.D.Physical Medicine & Rehabilitation Physician1346213246
- Anna Abramson, M.D.Internal Medicine Physician1346424785
- Alison Acerra, MS, RDRegistered Dietitian1992726848
- Sharon AdelsonCounselor1932467271
- Gary Agcaoili, C.T.R.SRecreation Therapist1649284019
Verify David Yoonseok Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 104284Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average oral and maxillofacial surgery (dentist) in 2024
204 Medicare Part D claims for 81 beneficiaries, against an average of 406 among the 5,870 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 69 claims were for opioids.
Most prescribed
- Chlorhexidine Gluconate60 claims
- Hydrocodone-Acetaminophen56 claims
- Amoxicillin47 claims
- Clindamycin Hcl14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $6,047.40
14 payments; by number, the most common kind was food and beverage; the largest payer was Nexus Cmf, LLC. The 4,075 providers of this specialty with any payment received $1,077.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
David Yoonseok Ahn among 987 oral and maxillofacial surgery (dentist) records in California
David Yoonseok Ahn, DMD is one of 987 oral and maxillofacial surgery (dentist) records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2026 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Oral and Maxillofacial Surgery (Dentist) providers in California
There are 987 oral and maxillofacial surgery (dentist) records in California.
All 987 in California → Every provider in San Francisco → Oral and Maxillofacial Surgery (Dentist) nationwide →
The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes
- Stephen Connelly, M.D.,D.D.S.San Francisco, CA 941211720201692
- Shelley Miyasaki, D.D.S., PH.D.San Francisco, CA 941211750325130
- Rebeka Silva, DMDSan Francisco, CA 941211801811864
- Forrest Duan, DMDSan Francisco, CA 941221821210196
- Morgan Nelson, DDSSan Francisco, CA 941221326600834
- Dennis Song, MD DDSSan Francisco, CA 941181932235470
- Michael Barkin, DDSSan Francisco, CA 941151386726537
- Martin Chin, D.D.S.San Francisco, CA 941151043275738
Common questions
What is David Yoonseok Ahn, DMD's NPI number?
David Yoonseok Ahn, DMD's National Provider Identifier (NPI) is 1265865216, issued on Aug 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is David Yoonseok Ahn, DMD located?
The NPPES record lists a practice address at 4150 Clement St, San Francisco, CA, 94121. Phone: (415) 221-4810. Providers update this record themselves, so call before visiting.
How can I verify David Yoonseok Ahn, DMD's license?
NPPES lists California license number 104284, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does David Yoonseok Ahn, DMD prescribe under Medicare Part D?
In 2024, David Yoonseok Ahn, DMD had 204 Medicare Part D claims for 81 beneficiaries; the average among oral and maxillofacial surgery (dentist) prescribers was 406. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.