William Rizzo, MD
NPI 1114931698 · Internal Medicine Physician · Clarkston, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Rizzo, MD is a Internal Medicine Physician provider in Clarkston, MI (NPI 1114931698).
Provider details
- NPI number
- 1114931698
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- WR054582 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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
- 2006-07-28
- Last updated
- 2015-08-13
Frequently asked questions
- What is William Rizzo's NPI number?
- William Rizzo's National Provider Identifier (NPI) is 1114931698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Rizzo's specialty?
- William Rizzo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Rizzo located?
- William Rizzo's practice location on file with NPPES is 5701 Bow Pointe Dr, Clarkston, MI 48346-3198.
- What is William Rizzo's phone number?
- The practice phone number listed in the NPPES registry for William Rizzo is (248) 625-2273.
- Does William Rizzo accept Medicare?
- William Rizzo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Rizzo's NPI active?
- Yes — William Rizzo's NPI (1114931698) is active in the NPPES registry as of the last update on 2015-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.