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William Yanowsky, ATC
NPI 1215072830 · Specialist · San Jose, CA
William Yanowsky, ATC is a Specialist provider in San Jose, CA (NPI 1215072830).
Provider details
- NPI number
- 1215072830
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- ATC
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(83/100 index)
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
83% 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
4252 Crescendo Ave
San Jose, CA 95136-2113
Phone: (408) 504-9866
Street-level locationGet directions
Mailing address
4252 Crescendo Ave
San Jose, CA 95136-2113
Registry dates
- Enumerated
- 2007-02-21
- Last updated
- 2023-08-10
- Certified
- 2023-08-10
Frequently asked questions
- What is William Yanowsky's NPI number?
- William Yanowsky's National Provider Identifier (NPI) is 1215072830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Yanowsky's specialty?
- William Yanowsky is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Yanowsky located?
- William Yanowsky's practice location on file with NPPES is 4252 Crescendo Ave, San Jose, CA 95136-2113.
- What is William Yanowsky's phone number?
- The practice phone number listed in the NPPES registry for William Yanowsky is (408) 504-9866.
- Is William Yanowsky's NPI active?
- Yes — William Yanowsky's NPI (1215072830) is active in the NPPES registry as of the last update on 2023-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.