DR. DAVID YOONSEOK AHN DMD
NPI 1265865216
Dentist - Oral and Maxillofacial Surgery in San Francisco, CA
About Dr. David Yoonseok Ahn Dmd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID YOONSEOK AHN DMD (NPI 1265865216) is an individual oral and maxillofacial surgery provider in San Francisco, California, licensed in California (104284) and active in the NPI registry since August 2013. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. David Yoonseok Ahn Dmd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94121 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94121
SAN FRANCISCO, CA 94121
SAN FRANCISCO, CA 94121
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is David Ahn's NPI number?
The NPI number for David Ahn is 1265865216. It was assigned to this individual provider in the NPPES registry on August 14, 2013.
Where is David Ahn located?
David Ahn practices at 4150 Clement St, San Francisco, CA 94121. The listed phone number is (415) 221-4810.
What is David Ahn's specialty?
The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.
Is David Ahn enrolled in Medicare?
Yes. David Ahn is registered in the Medicare PECOS enrollment system.
What insurance does David Ahn accept?
Health plans from Anthem Blue Cross and Blue Shield, BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas and 3 other insurers list David Ahn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for David Ahn was last updated on June 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. David Yoonseok Ahn, DMD · NPI 1265865216
Oral and Maxillofacial Surgery provider in San Francisco, California. Individual provider, active in the CMS NPPES registry since August 14, 2013.
## Identity
- **NPI:** 1265865216 (Entity type: Individual)
- **Enumerated:** August 14, 2013
- **Primary specialty:** Dentist - Oral and Maxillofacial Surgery · taxonomy 1223S0112X
- **State license:** 104284 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4150 CLEMENT ST, San Francisco, CA 94121-1563
- **Phone:** (415) 221-4810
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
## Record status
- **NPPES last updated:** June 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1265865216) · Data from the CMS NPPES public registry.