CHARLES G HOLMSTEN MD AND ASSOCIATES
CHARLES G HOLMSTEN MD AND ASSOCIATES is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1043431521, based in Houston, TX. The organization lists 2 taxonomy classifications, with Occupational Medicine Clinic/Center recorded as primary.
Getting there
The practice address on file is 7545 S BRAESWOOD BLVD, Houston, TX 77071. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| K7677 | TX | Occupational Medicine Clinic/Center primary |
| L8734 | TX | Adult Medicine Physician |
| D6035 | TX | Adult Medicine Physician |
| L8535 | TX | Adult Medicine Physician |
| K7677 | TX | Adult Medicine Physician |
| D6035 | TX | Occupational Medicine Clinic/Center |
| L8734 | TX | Occupational Medicine Clinic/Center |
| L8535 | TX | Occupational Medicine Clinic/Center |
This provider holds licence K7677 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Occupational Medicine covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QX0100X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261QX0100X | Occupational Medicine Clinic/Center Occupational Medicine | K7677 | TX | primary |
| 207QA0505X | Adult Medicine Physician Adult Medicine | L8734 | TX | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | D6035 | TX | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | L8535 | TX | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | K7677 | TX | |
| 261QX0100X | Occupational Medicine Clinic/Center Occupational Medicine | D6035 | TX | |
| 261QX0100X | Occupational Medicine Clinic/Center Occupational Medicine | L8734 | TX | |
| 261QX0100X | Occupational Medicine Clinic/Center Occupational Medicine | L8535 | 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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1043431521 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | May 1, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
7545 S BRAESWOOD BLVD Houston, TX 77071 (713) 777-3131 Fax (713) 777-5544 |
| Other identifiers |
108343
· AMERIGROUP M E BUXBAUM,DO (TX) 57420H · BC BS GROUP NUMBER (TX) 8M5130 · BC BS WALTER R HOLMSTEN (TX) 8F5610 · BC BS M E BUXBAUM, DO (TX) 84V645 · BC BS CHARLES G HOLMSTEN (TX) 25422 · AMERIGROUP C G HOLMSTEN (TX) |
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 | 4 | 3 | 4 | 3 | 1 | 5 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 8 | 3 | 8 | 3 | 2 | 5 | 4 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.