William G Sills MD PC
NPI 1437225158 · Internal Medicine Physician · Royal Oak, MI
William G Sills MD PC is a Internal Medicine Physician organization in Royal Oak, MI (NPI 1437225158).
Provider details
- NPI number
- 1437225158
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Sills, Doctor(248) 399-9083
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Cardiovascular Disease Physician207RC0000X
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
- 2006-11-27
- Last updated
- 2008-03-13
Frequently asked questions
- What is William G Sills MD PC's NPI number?
- William G Sills MD PC's National Provider Identifier (NPI) is 1437225158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William G Sills MD PC?
- William G Sills MD PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William G Sills MD PC located?
- William G Sills MD PC's practice location on file with NPPES is 1223 S Washington, Royal Oak, MI 48067.
- What is William G Sills MD PC's phone number?
- The practice phone number listed in the NPPES registry for William G Sills MD PC is (248) 399-9083.
- Who is the authorized official for William G Sills MD PC?
- The authorized official listed on William G Sills MD PC's NPPES record is William Sills, Doctor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William G Sills MD PC's NPI active?
- Yes — William G Sills MD PC's NPI (1437225158) is active in the NPPES registry as of the last update on 2008-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.