John Brennan, MD
NPI 1891378345 · Molecular Genetic Pathology (Pathology) Physician · Salt Lake City, UT
John Brennan, MD is a Molecular Genetic Pathology (Pathology) Physician provider in Salt Lake City, UT (NPI 1891378345).
Provider details
- NPI number
- 1891378345
- Entity type
- Individual
- Primary specialty
- Molecular Genetic Pathology (Pathology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 304865 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 321 S Columbia StChapel Hill, NC 27514-4309Phone: (919) 966-4676
Registry dates
- Enumerated
- 2021-05-03
- Last updated
- 2025-04-08
- Certified
- 2025-04-08
Frequently asked questions
- What is John Brennan's NPI number?
- John Brennan's National Provider Identifier (NPI) is 1891378345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Brennan's specialty?
- John Brennan is listed in the NPPES registry with a primary specialty of Molecular Genetic Pathology (Pathology) Physician (Allopathic & Osteopathic Physicians).
- Where is John Brennan located?
- John Brennan's practice location on file with NPPES is 15 N Medical Dr, Salt Lake City, UT 84112-1100.
- What is John Brennan's phone number?
- The practice phone number listed in the NPPES registry for John Brennan is (801) 581-2121.
- Is John Brennan's NPI active?
- Yes — John Brennan's NPI (1891378345) is active in the NPPES registry as of the last update on 2025-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.