Brian Chinai, DO
Brian Chinai, DO is a Critical Care Medicine (Internal Medicine) Physician in Houston, TX, registered under NPI 1003336652. 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 Houston, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.44 mi away at Texas Medical Center Garage 4. The nearest transit stop is 0.30 mi away, served by Texas Medical Center Transit Center. A pharmacy sits 505 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 766 ft away.
Getting here and what is nearby
Restaurant Chick-fil-A 384 ft ~2 min
6621 Fannin Street, Foodcourt 77030
Mo-Fr 10:30-18:30; Su off
Pharmacy CVS Pharmacy 547 ft ~3 min
6622 Fannin Street, Houston 77030
Pharmacy Walgreens 505 ft ~2 min
Coffee Starbucks 600 ft ~3 min
Restaurant Chipotle 622 ft ~3 min
Restaurant MOD Pizza 631 ft ~3 min
Hotel The Westin Houston Medical Center 673 ft ~3 min
Coffee JuiceLand 766 ft ~3 min
Parking Scurlock Tower Parking 949 ft ~4 min
6560 Fannin Street, Houston 77030
Hotel SureStay Plus by Best Western Houston Medical Center 0.22 mi ~5 min
Transit Holcombe Blvd @ Fannin St 0.23 mi ~5 min
Parking Smith Tower Parking 0.24 mi ~5 min
6550 Fannin Street, Houston 77030
Hotel InterContinental 0.25 mi ~5 min
Transit Texas Medical Center Transit Center 0.30 mi ~7 min
Transit Texas Medical Center Transit Center 0.30 mi ~7 min
Parking Texas Medical Center Garage 4 0.44 mi ~9 min
1406 Cambridge Street, Houston 77030
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 |
|---|---|---|
| U3491 | TX | Critical Care Medicine (Internal… primary |
| U3491 | TX | Internal Medicine Physician |
| U3491 | TX | Pulmonary Disease Physician |
This provider holds licence U3491 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 - Critical Care (intensivists)
- PAC ID
- 3375904501
- Enrollment ID
- I20230803001917
Medicare enrolment is recorded as approved under the provider type Practitioner - Critical Care (intensivists). 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 Critical Care Medicine covers
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists. NUCC Health Care Provider Taxonomy, code 207RC0200X
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 | |
|---|---|---|---|---|
| 207RC0200X | Critical Care Medicine (Internal Medicine) Physician Critical Care Medicine | U3491 | TX | primary |
| 207R00000X | Internal Medicine Physician | U3491 | TX | |
| 207RP1001X | Pulmonary Disease Physician Pulmonary Disease | U3491 | TX |
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 | 1003336652 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 25, 2017 |
| Last updated | Jul 24, 2023 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | DO |
| Practice address |
6720 BERTNER AVE Houston, TX 77030 (832) 355-2666 |
| Mailing address |
6720 BERTNER AVE STE O-520 Houston, TX 77030 |
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 | 3 | 6 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 3 | 6 | 1 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.