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WILLIAM G SILLS MD PC
NPI 1437225158
Internal Medicine in Royal Oak, MI

Active since November 27, 2006
1223 S WASHINGTON, ROYAL OAK, MI 48067(248) 399-9083(248) 399-2417 Get Directions Write a Review

NPPES record last updated: March 13, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William G Sills Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM G SILLS MD PC (NPI 1437225158) is a healthcare organization registered as an internal medicine in Royal Oak, Michigan and active in the NPI registry since November 2006. The organization lists William Gilbert Sills, Doctor, as its authorized official.

NPPES Registry Identity

NPI1437225158
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWILLIAM G SILLS MD PC
Location Address1223 S WASHINGTONRoyal Oak, MI 48067
Mailing Address1223 S WashingtonRoyal Oak, MI 48067 · (248) 399-9083 · Fax (248) 399-2417
Phone(248) 399-9083
Fax(248) 399-2417
Organization SubpartNo
Authorized OfficialWilliam Gilbert SillsDoctor · (248) 399-9083
Enumeration DateNovember 27, 2006
Last NPPES UpdateMarch 13, 2008
✔ NPI 1437225158 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X
1223 S WASHINGTON, Royal Oak, MI 48067
Open in Google Maps ↗

Other Identifiers 1

Medicare UPINB45243

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JENNIFER MICHELLE LEWISTON
Family Medicine
1223 S WASHINGTON
ROYAL OAK, MI 48067
Oakland County (248) 399-9083

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William G Sills MD PC's NPI number?

The NPI number for William G Sills MD PC is 1437225158. It was assigned to this organization in the NPPES registry on November 27, 2006.

Where is William G Sills MD PC located?

William G Sills MD PC is located at 1223 S Washington, Royal Oak, MI 48067. The listed phone number is (248) 399-9083.

What is William G Sills MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for William G Sills MD PC was last updated on March 13, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.