Ann Pena, MD
Ann Pena, MD is an Obstetrics & Gynecology Physician in San Diego, CA, registered under NPI 1003033580.
Getting there
Here is what surrounds this office in San Diego, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 431 ft away. The nearest transit stop is 622 ft away, served by Zion Av & Archwood Av. A pharmacy sits 547 ft from the entrance (Rite Aid), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.31 mi away.
Getting here and what is nearby
Parking 288 ft ~2 min
Parking 413 ft ~2 min
Parking 431 ft ~2 min
Transit 541 ft ~3 min
Pharmacy Rite Aid 547 ft ~3 min
6505 Mission Gorge Road, San Diego 92120
Transit Zion Av & Crawford St (Kaiser) 585 ft ~3 min
Grocery Vons 576 ft ~3 min
Transit Zion Av & Archwood Av 622 ft ~3 min
Convenience 7-Eleven 856 ft ~4 min
Restaurant Wendy's 828 ft ~4 min
6585 Mission Gorge Road, San Diego 92120
Mo-Su 06:30-00:00
Coffee Better Buzz Coffee Roasters 931 ft ~4 min
6605 Mission Gorge Road, 92120
Mo-Su 04:30-21:00
Restaurant La Familia Restaurant & Bar 1,003 ft ~4 min
Restaurant Carl's Jr. 1,014 ft ~4 min
6566 Mission Gorge Road, San Diego 92120
Mo-Su 06:00-22:00
Gas station USA Gasoline 0.20 mi ~5 min
6404 Mission Gorge Road, San Diego 92120
Coffee Starbucks 0.31 mi ~7 min
Convenience Mission Square Market 0.32 mi ~7 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A77391 | CA | Obstetrics & Gynecology Physician primary |
This provider holds licence A77391 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 - Obstetrics/gynecology
- PAC ID
- 1456314541
- Enrollment ID
- I20041109001214
Medicare enrolment is recorded as approved under the provider type Practitioner - Obstetrics/gynecology. 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 Obstetrics & Gynecology covers
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women. NUCC Health Care Provider Taxonomy, code 207V00000X
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 | 1003033580 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 19, 2007 |
| Last updated | Dec 1, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
4647 ZION AVE San Diego, CA 92120 (619) 528-5000 |
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 | 0 | 0 | 3 | 0 | 3 | 3 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 6 | 5 | 7 |
Sum = 50 · next multiple of 10 = 50 · 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.