NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Jeffrey Scott Deweerd, DO

Family Medicine Physician in Mason, MI · enumerated 2006 · practices at Mason Medical Group PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669428827

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Registry record

Entity type Individual (Type 1)
Name Dr. Jeffrey Scott Deweerd
Credential DO
Sex Male
Practice address Mason, MI, 48854
Phone (517) 244-1000
Fax (517) 604-6154
Enumeration date May 26, 2006
Last updated in NPPES Oct 2, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101013371 (MI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
4510844 Medicaid MI -
P0027587 Other MI RR MEDICARE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Jeffrey Deweerd?
Jeffrey Deweerd is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-02.