Gary Simpson, M.D.
NPI 1235108002 · Clinical Genetics (M.D.) Physician · Tempe, AZ
Gary Simpson, M.D. is a Clinical Genetics (M.D.) Physician provider in Tempe, AZ (NPI 1235108002).
Provider details
- NPI number
- 1235108002
- Entity type
- Individual
- Primary specialty
- Clinical Genetics (M.D.) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 15916 (AZ)
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
20 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
- 2006-03-15
- Last updated
- 2007-07-09
Frequently asked questions
- What is Gary Simpson's NPI number?
- Gary Simpson's National Provider Identifier (NPI) is 1235108002, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Simpson's specialty?
- Gary Simpson is listed in the NPPES registry with a primary specialty of Clinical Genetics (M.D.) Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Simpson located?
- Gary Simpson's practice location on file with NPPES is 6301 S Mcclintock Dr, Tempe, AZ 85283-3392.
- What is Gary Simpson's phone number?
- The practice phone number listed in the NPPES registry for Gary Simpson is (480) 897-0234.
- Is Gary Simpson's NPI active?
- Yes — Gary Simpson's NPI (1235108002) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.