William Heiser, M.D.
NPI 1356393425 · Diagnostic Radiology Physician · Phoenix, AZ
William Heiser, M.D. is a Diagnostic Radiology Physician provider in Phoenix, AZ (NPI 1356393425).
Provider details
- NPI number
- 1356393425
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 30706 (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
- 2006-05-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Heiser's NPI number?
- William Heiser's National Provider Identifier (NPI) is 1356393425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Heiser's specialty?
- William Heiser is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Heiser located?
- William Heiser's practice location on file with NPPES is 650 E Indian School Rd, Phoenix, AZ 85012-1839.
- What is William Heiser's phone number?
- The practice phone number listed in the NPPES registry for William Heiser is (602) 277-5551.
- Is William Heiser's NPI active?
- Yes — William Heiser's NPI (1356393425) 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.