Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcus E Koss, M.D.

Family Medicine Physician in Saint Clair Shores, MI · enumerated 2006 · practices at Essential Care Family Medicine Pllc.

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

National Provider Identifier

1750300679

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Registry record

Entity type Individual (Type 1)

Name Marcus E Koss

Credential M.D.

Sex Male

Practice address 21603 E 11 Mile Rd, Saint Clair Shores, MI, 48081

Phone (586) 280-2100

Fax (586) 210-8808

Enumeration date Jul 19, 2006

Last updated in NPPES Apr 14, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 4301074604 (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
135327	Other	MI	PREFERRED CHOICES
CB2510	Other	MI	RAILROAD MEDICARE
OH24993	Other	MI	BLUE CROSS AND BLUE SHIELD OF MICHIGAN

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1750300679 active?

Yes, as of the latest NPPES snapshot, NPI 1750300679 is active (record last updated 2022-04-14).

How do I verify Marcus Koss's NPI record?

Cross-check NPI 1750300679 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Alexandra Dadich Audiologist · Saint Clair Shores, MI NPI 1033632898 Essential Care Family Medicine Pllc Family Medicine Physician · Saint Clair Shores, MI NPI 1508519075

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-14.