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William Hennessy, M.D.
NPI 1619184157 · Dermatology Physician · San Jose, CA
William Hennessy, M.D. is a Dermatology Physician provider in San Jose, CA (NPI 1619184157).
Provider details
- NPI number
- 1619184157
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C25212 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 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
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
276 International Circle
San Jose, CA 95119-1197
Phone: (408) 363-4525
Street-level locationGet directions
Mailing address
276 International Circle
San Jose, CA 95119-1197
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Hennessy's NPI number?
- William Hennessy's National Provider Identifier (NPI) is 1619184157, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hennessy's specialty?
- William Hennessy is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Hennessy located?
- William Hennessy's practice location on file with NPPES is 276 International Circle, San Jose, CA 95119-1197.
- What is William Hennessy's phone number?
- The practice phone number listed in the NPPES registry for William Hennessy is (408) 363-4525.
- Is William Hennessy's NPI active?
- Yes — William Hennessy's NPI (1619184157) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.