Akbar Nassiry, M.D., M.P.H.
Akbar Nassiry, M.D., M.P.H. is a Hospitalist Physician in Irvine, CA, registered under NPI 1003259870. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Irvine, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 812 ft away. There is EV charging 313 ft from the office (Blink) — useful if you are driving in from out of town. The nearest transit stop is 710 ft away, served by West Yale Loop @ Barranca Parkway Outbound. If you arrive early, there is a coffee shop 0.21 mi away.
Getting here and what is nearby
EV charging Blink 313 ft ~2 min
Restaurant Japanese BBQ & Yakitori Bar 336 ft ~2 min
4020 Barranca Parkway, Irvine 92604
Transit Culver-Barranca 439 ft ~2 min
Restaurant Mimi's Cafe 443 ft ~2 min
4030 Barranca Parkway, Irvine 92604
Parking 456 ft ~2 min
Transit Barranca-Culver 571 ft ~3 min
Restaurant Elevate Nutrition 637 ft ~3 min
3960 Barranca Parkway, Irvine 92606-8238
Mo-Fr 08:00-20:30; Sa 08:00-15:30; Su 08:00-15:00
Transit West Yale Loop @ Barranca Parkway Outbound 710 ft ~3 min
Parking 699 ft ~3 min
Parking 812 ft ~4 min
Coffee Starbucks 911 ft ~4 min
3995 Alton Parkway, Irvine 92606
Mo-Su 05:00-21:30
Coffee Tastea 1,007 ft ~4 min
Convenience 7-Eleven 1,025 ft ~4 min
Coffee Peet's Coffee 0.21 mi ~5 min
Grocery H Mart 0.28 mi ~6 min
3825 Alton Parkway, Irvine 92606
Gas station Shell 0.37 mi ~8 min
3720 Barranca Parkway, Irvine
Grocery Sprouts Farmers Market 0.37 mi ~8 min
3775 Alton Parkway, Irvine 92606
Mo-Su 07:00-22:00
Gas station Mobil 0.42 mi ~9 min
Convenience Circle K 0.43 mi ~9 min
Convenience Circle K 0.50 mi ~10 min
4550 Barranca Parkway, Irvine 92604
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 |
|---|---|---|
| A125091 | CA | Internal Medicine Physician |
| 0101253439 | VA | Internal Medicine Physician |
| A125091 | CA | General Practice Physician |
| A125091 | CA | Hospitalist Physician primary |
Licences are recorded in 2 states: CA, VA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Internal Medicine
- PAC ID
- 4284859299
- Enrollment ID
- I20140708001043
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. 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.
Licensed in 2 states
This provider holds licences in 2 states: California and Virginia. The practice address on file is in Irvine, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- A125091
- Specialty
- Internal Medicine Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Hospitalist covers
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | A125091 | CA | |
| 207R00000X | Internal Medicine Physician | 0101253439 | VA | |
| 208D00000X | General Practice Physician | A125091 | CA | |
| 208M00000X | Hospitalist Physician | A125091 | CA | primary |
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 | 1003259870 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 11, 2013 |
| Last updated | May 29, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D., M.P.H. |
| Practice address |
4000 BARRANCA PARKWAY STE. 250 Irvine, CA 92604 (949) 577-0047 Fax (909) 635-6085 |
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 | 2 | 5 | 9 | 8 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 9 | 8 | 5 |
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.