Ronnie William, M.D.
NPI 1639319049 · Endocrinology, Diabetes & Metabolism Physician · Tucson, AZ
Ronnie William, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Tucson, AZ (NPI 1639319049).
Provider details
- NPI number
- 1639319049
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 42303 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-02-25
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is Ronnie William's NPI number?
- Ronnie William's National Provider Identifier (NPI) is 1639319049, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronnie William's specialty?
- Ronnie William is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Ronnie William located?
- Ronnie William's practice location on file with NPPES is 3601 S 6th Ave, Tucson, AZ 85723-0001.
- What is Ronnie William's phone number?
- The practice phone number listed in the NPPES registry for Ronnie William is (520) 792-1450.
- Is Ronnie William's NPI active?
- Yes — Ronnie William's NPI (1639319049) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.