Nathan Baumer, M.D.
Nathan Baumer, M.D. is a General Practice Physician in Houston, TX, registered under NPI 1811908619. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 523 N SAM HOUSTON PKWY E SUITE 125, Houston, TX 77060. 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 |
|---|---|---|
| K5803 | TX | General Practice Physician primary |
| K5803 | TX | Diagnostic Radiology Physician |
This provider holds licence K5803 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 - General Practice
- PAC ID
- 0547256760
Enrolled in Medicare 6 times, across 6 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Texas | I20040422001507 | Practitioner - General Practice |
| Illinois | I20101004000792 | Practitioner - General Practice |
| Massachusetts | I20130905000320 | Practitioner - General Practice |
| Indiana | I20170911002556 | Practitioner - Family Practice |
| Ohio | I20180119002282 | Practitioner - Family Practice |
| Kentucky | I20180213002126 | Practitioner - Family Practice |
Medicare enrolment is recorded as approved under the provider type Practitioner - General Practice. There are 6 separate enrolment records across 6 states (TX, IL, MA, IN, OH, KY). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 General Practice covers
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. NUCC Health Care Provider Taxonomy, code 208D00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 208D00000X | General Practice Physician | K5803 | TX | primary |
| 2085R0202X | Diagnostic Radiology Physician Diagnostic Radiology | K5803 | 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 | 1811908619 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 10, 2006 |
| Last updated | Dec 20, 2017 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
523 N SAM HOUSTON PKWY E SUITE 125 Houston, TX 77060 (805) 275-1834 |
| Mailing address |
1717 ROTARY DR Humble, TX 77338 |
| Other identifiers |
0007737012
· Other (TX) 105800006 · Medicaid (TX) 8U3450 · Other (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 | 8 | 1 | 1 | 9 | 0 | 8 | 6 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 2 | 1 | 9 | 0 | 7 | 6 | 2 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.