Alvin Raymond Tan, M.D.
NPI 1093178725 · Internal Medicine Physician · Katy, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alvin Raymond Tan, M.D. is a Internal Medicine Physician provider in Katy, TX (NPI 1093178725).
Provider details
- NPI number
- 1093178725
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- P6925 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 207 | 82 |
| Ergocalciferol (vitamin D2)brand: Vitamin D2 | 151 | 73 |
| Lisinopril | 77 | 34 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 71 | 67 |
| Amlodipine Besylate | 71 | 36 |
| Empagliflozinbrand: Jardiance | 70 | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-31
- Last updated
- 2021-06-22
- Certified
- 2021-06-22
Frequently asked questions
- What is Alvin Raymond Tan's NPI number?
- Alvin Raymond Tan's National Provider Identifier (NPI) is 1093178725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alvin Raymond Tan's specialty?
- Alvin Raymond Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alvin Raymond Tan located?
- Alvin Raymond Tan's practice location on file with NPPES is 2510 W Grand Pkwy N, Katy, TX 77449-2853.
- What is Alvin Raymond Tan's phone number?
- The practice phone number listed in the NPPES registry for Alvin Raymond Tan is (713) 442-4222.
- Does Alvin Raymond Tan accept Medicare?
- Alvin Raymond Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alvin Raymond Tan's NPI active?
- Yes — Alvin Raymond Tan's NPI (1093178725) is active in the NPPES registry as of the last update on 2021-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.