FRANCIS H. CHUNG, DDS, INC
FRANCIS H. CHUNG, DDS, INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1366575490, based in San Francisco, CA. The organization lists 3 taxonomy classifications, with Oral and Maxillofacial Radiology Dentistry recorded as primary.
Getting there
The practice address on file is 2460 MISSION ST SUITE #109, San Francisco, CA 94110. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 45561 | CA | Oral and Maxillofacial Radiology Dentistry primary |
| 45561 | CA | Oral and Maxillofacial Surgery… |
| 45561 | CA | Dental Laboratory |
This provider holds licence 45561 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Oral and Maxillofacial Radiology covers
The specialty of dentistry and discipline of radiology concerned with the production and interpretation of images and data produced by all modalities of radiant energy that are used for the diagnosis and management of diseases, disorders and conditions of the oral and maxillofacial region. NUCC Health Care Provider Taxonomy, code 1223X0008X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1223X0008X | Oral and Maxillofacial Radiology Dentistry Oral and Maxillofacial Radiology | 45561 | CA | primary |
| 261QS0112X | Oral and Maxillofacial Surgery Clinic/Center Oral and Maxillofacial Surgery | 45561 | CA | |
| 292200000X | Dental Laboratory | 45561 | CA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1366575490 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 14, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
2460 MISSION ST SUITE #109 San Francisco, CA 94110 (415) 401-7380 Fax (415) 401-7563 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 3 | 6 | 6 | 5 | 7 | 5 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 3 | 6 | 1 | 7 | 1 | 4 | 9 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.