Preston Simpson, MD
NPI 1265453021 · Clinical Pathology/Laboratory Medicine Physician · Fresno, CA
Preston Simpson, MD is a Clinical Pathology/Laboratory Medicine Physician provider in Fresno, CA (NPI 1265453021).
Provider details
- NPI number
- 1265453021
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G58006 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2008-05-29
Frequently asked questions
- What is Preston Simpson's NPI number?
- Preston Simpson's National Provider Identifier (NPI) is 1265453021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Preston Simpson's specialty?
- Preston Simpson is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Preston Simpson located?
- Preston Simpson's practice location on file with NPPES is 1303 E Herndon Ave, Fresno, CA 93720.
- What is Preston Simpson's phone number?
- The practice phone number listed in the NPPES registry for Preston Simpson is (559) 449-5360.
- Is Preston Simpson's NPI active?
- Yes — Preston Simpson's NPI (1265453021) is active in the NPPES registry as of the last update on 2008-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.