Timothy Davern, MD
Timothy Davern, MD is a Transplant Hepatology Physician in San Francisco, CA, registered under NPI 1699723379. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1100 VAN NESS AVE, San Francisco, CA 94109. 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 |
|---|---|---|
| 27766 | CA | Transplant Hepatology Physician primary |
| G79521 | CA | Internal Medicine Physician |
| G79521 | CA | Gastroenterology Physician |
This provider holds licence 27766 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Gastroenterology
- PAC ID
- 7911081278
- Enrollment ID
- I20080225000762
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Transplant Hepatology covers
An internist with special knowledge and the skill required of a gastroenterologist to care for patients prior to and following hepatic transplantation that spans all phases of liver transplantation. Selection of appropriate recipients requires assessment by a team having experience in evaluating the severity and prognosis of patients with liver disease. NUCC Health Care Provider Taxonomy, code 207RT0003X
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 | |
|---|---|---|---|---|
| 207RT0003X | Transplant Hepatology Physician Transplant Hepatology | 27766 | CA | primary |
| 207R00000X | Internal Medicine Physician | G79521 | CA | |
| 207RG0100X | Gastroenterology Physician Gastroenterology | G79521 | 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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1699723379 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 4, 2006 |
| Last updated | Nov 16, 2020 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
1100 VAN NESS AVE San Francisco, CA 94109 (415) 600-1000 Fax (415) 558-7051 |
| Mailing address |
325 DISTEL CIR Los Altos, CA 94022 |
| Other identifiers |
0G7952100
· Medicaid (CA) G79521 · Other (CA) |
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 | 6 | 9 | 9 | 7 | 2 | 3 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 9 | 9 | 5 | 2 | 6 | 3 | 5 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.