Thomas Holmes, M.D.
Thomas Holmes, M.D. is a Pediatric Dermatology Physician in Santa Fe, NM, registered under NPI 1003844259. This provider registers 4 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
The practice address on file is 465 SAINT MICHAELS DR SUITE 118, Santa Fe, NM 87505. 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 |
|---|---|---|
| 78-183 | NM | Dermatopathology Physician |
| 78-183 | NM | Dermatology Physician |
| 78-183 | NM | Procedural Dermatology Physician |
| 78-183 | NM | Pediatric Dermatology Physician primary |
This provider holds licence 78-183 issued in NM. 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 Pediatric Dermatology covers
A pediatric dermatologist has, through additional special training, developed expertise in the treatment of specific skin disease categories with emphasis on those diseases which predominate in infants, children and adolescents. NUCC Health Care Provider Taxonomy, code 207NP0225X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207ND0900X | Dermatopathology Physician Dermatopathology | 78-183 | NM | |
| 207N00000X | Dermatology Physician | 78-183 | NM | |
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | 78-183 | NM | |
| 207NP0225X | Pediatric Dermatology Physician Pediatric Dermatology | 78-183 | NM | primary |
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 | 1003844259 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 28, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
465 SAINT MICHAELS DR SUITE 118 Santa Fe, NM 87505 (505) 988-5120 Fax (505) 982-1812 |
| Other identifiers |
00NM1001296
· Other (NM) 11038668 · Other (NM) 17187 · Other (NM) 24604 · Medicaid (NM) |
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 | 8 | 4 | 4 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 7 | 4 | 8 | 2 | 1 |
Sum = 51 · next multiple of 10 = 60 · 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.