Garrett Chan, MD
NPI 1629728449 · Internal Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garrett Chan, MD is a Internal Medicine Physician provider in Fremont, CA (NPI 1629728449).
Provider details
- NPI number
- 1629728449
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A201129 (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
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 100 N Milpitas BlvdMilpitas, CA 95035-4499Phone: (800) 478-8837
Registry dates
- Enumerated
- 2022-03-25
- Last updated
- 2025-10-28
- Certified
- 2025-10-28
Frequently asked questions
- What is Garrett Chan's NPI number?
- Garrett Chan's National Provider Identifier (NPI) is 1629728449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garrett Chan's specialty?
- Garrett Chan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Garrett Chan located?
- Garrett Chan's practice location on file with NPPES is 3200 Kearney St, Fremont, CA 94538-2299.
- What is Garrett Chan's phone number?
- The practice phone number listed in the NPPES registry for Garrett Chan is (800) 478-8837.
- Does Garrett Chan accept Medicare?
- Garrett Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garrett Chan's NPI active?
- Yes — Garrett Chan's NPI (1629728449) is active in the NPPES registry as of the last update on 2025-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.