IndividualActive
John Hessl
NPI 1235215971 · Urology Physician · San Mateo, CA
John Hessl is a Urology Physician provider in San Mateo, CA (NPI 1235215971).
Provider details
- NPI number
- 1235215971
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- G14798 (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
101 So San Mateo Dr
Suite 205
San Mateo, CA 94401
Phone: (650) 348-7770
Fax: (650) 348-0166
Street-level locationGet directions
Mailing address
101 So San Mateo Dr
San Mateo, CA 94401
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Hessl's NPI number?
- John Hessl's National Provider Identifier (NPI) is 1235215971, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hessl's specialty?
- John Hessl is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hessl located?
- John Hessl's practice location on file with NPPES is 101 So San Mateo Dr, San Mateo, CA 94401.
- What is John Hessl's phone number?
- The practice phone number listed in the NPPES registry for John Hessl is (650) 348-7770.
- Is John Hessl's NPI active?
- Yes — John Hessl's NPI (1235215971) 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.