Mai-Sie Chan, M.D., Inc
NPI 1396441929 · Primary Care Clinic/Center · San Francisco, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mai-Sie Chan, M.D., Inc is a Primary Care Clinic/Center organization in San Francisco, CA (NPI 1396441929).
Provider details
- NPI number
- 1396441929
- Entity type
- Organization
- Primary specialty
- Primary Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Mai-Sie Chan, Owner(415) 956-6633
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-02-06
- Last updated
- 2023-07-13
- Certified
- 2023-07-13
Frequently asked questions
- What is Mai-Sie Chan, M.D., Inc's NPI number?
- Mai-Sie Chan, M.D., Inc's National Provider Identifier (NPI) is 1396441929, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mai-Sie Chan, M.D., Inc?
- Mai-Sie Chan, M.D., Inc is classified in the NPPES registry as Primary Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is Mai-Sie Chan, M.D., Inc located?
- Mai-Sie Chan, M.D., Inc's practice location on file with NPPES is 929 Clay St Ste 303, San Francisco, CA 94108-1570.
- What is Mai-Sie Chan, M.D., Inc's phone number?
- The practice phone number listed in the NPPES registry for Mai-Sie Chan, M.D., Inc is (415) 956-6633.
- Does Mai-Sie Chan, M.D., Inc accept Medicare?
- Mai-Sie Chan, M.D., Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mai-Sie Chan, M.D., Inc?
- The authorized official listed on Mai-Sie Chan, M.D., Inc's NPPES record is Mai-Sie Chan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mai-Sie Chan, M.D., Inc's NPI active?
- Yes — Mai-Sie Chan, M.D., Inc's NPI (1396441929) is active in the NPPES registry as of the last update on 2023-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.