Joseph C. Chao, M.D. Cardiology Clinic
NPI 1245935352 · Cardiovascular Disease Physician · Mountain View, CA
Joseph C. Chao, M.D. Cardiology Clinic is a Cardiovascular Disease Physician organization in Mountain View, CA (NPI 1245935352).
Provider details
- NPI number
- 1245935352
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Joseph Chao, Physician(408) 666-2866
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
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
- 2023-03-31
- Last updated
- 2023-03-31
- Certified
- 2023-03-31
Frequently asked questions
- What is Joseph C. Chao, M.D. Cardiology Clinic's NPI number?
- Joseph C. Chao, M.D. Cardiology Clinic's National Provider Identifier (NPI) is 1245935352, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Joseph C. Chao, M.D. Cardiology Clinic?
- Joseph C. Chao, M.D. Cardiology Clinic is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph C. Chao, M.D. Cardiology Clinic located?
- Joseph C. Chao, M.D. Cardiology Clinic's practice location on file with NPPES is 525 South Dr Ste 105, Mountain View, CA 94040-4211.
- What is Joseph C. Chao, M.D. Cardiology Clinic's phone number?
- The practice phone number listed in the NPPES registry for Joseph C. Chao, M.D. Cardiology Clinic is (650) 962-0242.
- Who is the authorized official for Joseph C. Chao, M.D. Cardiology Clinic?
- The authorized official listed on Joseph C. Chao, M.D. Cardiology Clinic's NPPES record is Joseph Chao, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Joseph C. Chao, M.D. Cardiology Clinic's NPI active?
- Yes — Joseph C. Chao, M.D. Cardiology Clinic's NPI (1245935352) is active in the NPPES registry as of the last update on 2023-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.