Desmond Tan, M.D.
NPI 1780625863 · Internal Medicine Physician · Elk Grove, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Desmond Tan, M.D. is a Internal Medicine Physician provider in Elk Grove, CA (NPI 1780625863).
Provider details
- NPI number
- 1780625863
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C53075 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 370 | 140 |
| Losartan Potassium | 268 | 87 |
| Levothyroxine Sodium | 204 | 58 |
| Lisinopril | 200 | 70 |
| Amlodipine Besylate | 196 | 67 |
| Hydrochlorothiazide | 168 | 60 |
| Famotidine | 166 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2021-12-14
Frequently asked questions
- What is Desmond Tan's NPI number?
- Desmond Tan's National Provider Identifier (NPI) is 1780625863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Desmond Tan's specialty?
- Desmond Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Desmond Tan located?
- Desmond Tan's practice location on file with NPPES is 9201 Big Horn Blvd, Elk Grove, CA 95758-1240.
- What is Desmond Tan's phone number?
- The practice phone number listed in the NPPES registry for Desmond Tan is (916) 478-5100.
- Does Desmond Tan accept Medicare?
- Desmond Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Desmond Tan's NPI active?
- Yes — Desmond Tan's NPI (1780625863) is active in the NPPES registry as of the last update on 2021-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.