Alexandra Grieb, M.D.
Alexandra Grieb, M.D. is a Hospitalist Physician in Austin, TX, registered under NPI 1003349853.
Getting there
Here is what surrounds this office in Austin, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 0.48 mi away at Lot 37. The nearest transit stop is 950 ft away, served by 3409 Red River/Harris. If you arrive early, there is a coffee shop 638 ft away.
Getting here and what is nearby
Transit 3107 Red River/32nd 122 ft ~1 min
Restaurant Jimmy John's 149 ft ~1 min
Transit 3100 Red River/32nd 214 ft ~1 min
Restaurant Mary's Cafe 214 ft ~1 min
3209 Red River Street, 78705
Parking 373 ft ~2 min
Coffee Red River Cafe 638 ft ~3 min
Transit 3409 Red River/Harris 950 ft ~4 min
Hotel Rodeway Inn University / Downtown 0.23 mi ~5 min
2900 North Interstate Highway 35 Service Road, Austin 78705
Restaurant Aster's Ethiopian Restaurant 0.26 mi ~6 min
2804;2808 North Interstate Highway 35 Service Road;North Interstate 35, Austin 78705
Mo-Th 11:00-21:00; Fr-Sa 11:00-22:00; Su 17:00-22:00
Parking San Jacinto Garage 0.42 mi ~9 min
Parking Lot 37 0.48 mi ~10 min
2298 Red River Street, Austin 78705
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 |
|---|---|---|
| T2613 | TX | Hospitalist Physician primary |
This provider holds licence T2613 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 - Internal Medicine
- PAC ID
- 5698048056
- Enrollment ID
- I20220125000591
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.
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
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 | 1003349853 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 8, 2017 |
| Last updated | Dec 3, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.D. |
| Practice address |
919 E 32ND ST Austin, TX 78705 (512) 544-7111 |
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 | 3 | 4 | 9 | 8 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 4 | 9 | 8 | 1 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.