Masayasu Kihira MD a Professional Corporation
NPI 1770540858 · Family Medicine Physician · San Mateo, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Masayasu Kihira MD a Professional Corporation is a Family Medicine Physician organization in San Mateo, CA (NPI 1770540858).
Provider details
- NPI number
- 1770540858
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Masayasu Kihira, Family Practitioner Medical Directo(650) 558-0337
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Pediatrics Physician208000000X
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.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Nihon Bay Clinic
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2010-08-24
Frequently asked questions
- What is Masayasu Kihira MD a Professional Corporation's NPI number?
- Masayasu Kihira MD a Professional Corporation's National Provider Identifier (NPI) is 1770540858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Masayasu Kihira MD a Professional Corporation?
- Masayasu Kihira MD a Professional Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Masayasu Kihira MD a Professional Corporation located?
- Masayasu Kihira MD a Professional Corporation's practice location on file with NPPES is 40 N San Mateo Dr, San Mateo, CA 94401-2824.
- What is Masayasu Kihira MD a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Masayasu Kihira MD a Professional Corporation is (650) 558-0337.
- Does Masayasu Kihira MD a Professional Corporation accept Medicare?
- Masayasu Kihira MD a Professional Corporation 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 Masayasu Kihira MD a Professional Corporation?
- The authorized official listed on Masayasu Kihira MD a Professional Corporation's NPPES record is Masayasu Kihira, Family Practitioner Medical Directo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Masayasu Kihira MD a Professional Corporation's NPI active?
- Yes — Masayasu Kihira MD a Professional Corporation's NPI (1770540858) is active in the NPPES registry as of the last update on 2010-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.