Milton Chan, D.O.
NPI 1144309832 · Internal Medicine Physician · Union City, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Milton Chan, D.O. is a Internal Medicine Physician provider in Union City, CA (NPI 1144309832).
Provider details
- NPI number
- 1144309832
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A8362 (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
19 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 · 112 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 630 | 250 |
| Amlodipine Besylate | 347 | 145 |
| Lisinopril | 318 | 121 |
| Atenolol | 292 | 101 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 242 | 90 |
| Losartan Potassium | 227 | 93 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2021-12-13
Frequently asked questions
- What is Milton Chan's NPI number?
- Milton Chan's National Provider Identifier (NPI) is 1144309832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Milton Chan's specialty?
- Milton Chan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Milton Chan located?
- Milton Chan's practice location on file with NPPES is 3553 Whipple Rd, Union City, CA 94587-1507.
- What is Milton Chan's phone number?
- The practice phone number listed in the NPPES registry for Milton Chan is (510) 454-1000.
- Does Milton Chan accept Medicare?
- Milton Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Milton Chan's NPI active?
- Yes — Milton Chan's NPI (1144309832) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.