Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Paul Mark, M.D.

Clinical Genetics (M.D.) Physician in Grand Rapids, MI · enumerated 2006.

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

National Provider Identifier

1831137629

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Registry record

Entity type Individual (Type 1)

Name Dr. Paul Mark

Credential M.D.

Sex Male

Practice address 25 Michigan St Ne, Suite 2000, Grand Rapids, MI, 49503

Phone (616) 391-2192

Fax (616) 391-3114

Enumeration date Jun 3, 2006

Last updated in NPPES Feb 26, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 01040767A (IN) Secondary

207SG0201X Clinical Genetics (M.D.) Physician Allopathic & Osteopathic Physicians · License 4301057958 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1831137629	Medicaid	MI	-
200056530A	Medicaid	IN	-

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 Paul Mark?

Paul Mark is registered in NPPES with the primary taxonomy of Clinical Genetics (M.D.) 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 2021-02-26.