Robert Obrien, M.D.
Robert Obrien, M.D. is a Family Medicine Physician in Austin, TX, registered under NPI 1003043027. 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 Austin, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 703 ft away. The nearest transit stop is 0.26 mi away, served by 4401 S 1st/St Elmo.
Getting here and what is nearby
Parking 589 ft ~3 min
Parking Patient Parking 624 ft ~3 min
Parking 703 ft ~3 min
Transit 620 Radam/James Casey 0.21 mi ~5 min
Transit 4326 S 1st/St Elmo 0.25 mi ~5 min
Transit 4401 S 1st/St Elmo 0.26 mi ~6 min
Restaurant Casa Maria's 0.27 mi ~6 min
Gas station Shell 0.33 mi ~7 min
4111 South 1st Street
Restaurant El Corazon Catracho 0.36 mi ~8 min
Normandy Street
Convenience 7-Eleven 0.38 mi ~8 min
Gas station 7-Eleven 0.40 mi ~8 min
Restaurant Taqueria la Escondida #3 0.40 mi ~8 min
Gas station American Fuels 0.42 mi ~9 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 |
|---|---|---|
| J2712 | TX | Family Medicine Physician primary |
This provider holds licence J2712 issued in TX. 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 - Family Practice
- PAC ID
- 9436205119
- Enrollment ID
- I20090922000305
Medicare enrolment is recorded as approved under the provider type Practitioner - Family Practice. 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 Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
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 | 1003043027 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 17, 2009 |
| Last updated | Jun 17, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
4316 JAMES CASEY ST BLDG F200 Austin, TX 78745 (512) 791-7555 |
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 | 4 | 3 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 6 | 0 | 4 |
Sum = 43 · next multiple of 10 = 50 · check digit = 7 · actual last digit = 7
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.