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John Lenahan, M.D.
NPI 1710023692 · Dermatology Physician · San Francisco, CA
John Lenahan, M.D. is a Dermatology Physician provider in San Francisco, CA (NPI 1710023692).
Provider details
- NPI number
- 1710023692
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G15296 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
595 Buckingham Way
Suite #404
San Francisco, CA 94132-1909
Phone: (415) 665-1180
Fax: (415) 665-9350
Street-level locationGet directions
Mailing address
595 Buckingham Way
San Francisco, CA 94132-1909
Registry dates
- Enumerated
- 2007-01-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Lenahan's NPI number?
- John Lenahan's National Provider Identifier (NPI) is 1710023692, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lenahan's specialty?
- John Lenahan is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is John Lenahan located?
- John Lenahan's practice location on file with NPPES is 595 Buckingham Way, San Francisco, CA 94132-1909.
- What is John Lenahan's phone number?
- The practice phone number listed in the NPPES registry for John Lenahan is (415) 665-1180.
- Is John Lenahan's NPI active?
- Yes — John Lenahan's NPI (1710023692) 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.