Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Edwin Grenkoski, M.D.

Emergency Medicine Physician in Robbinsville, NC · enumerated 2006.

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

National Provider Identifier

1174567754

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Edwin Grenkoski

Credential M.D.

Sex Male

Practice address 409 Tallulah Rd, Robbinsville, NC, 28771

Phone (828) 479-6434

Enumeration date Jun 15, 2006

Last updated in NPPES Aug 1, 2023

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 34687 (TN) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 34687 (TN) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 38069 (NC) 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
3860884	Medicaid	TN	-
3159891	Other	TN	BLUE CROSS
3860883	Medicaid	TN	-
3159896	Other	TN	BLUE CROSS
P00206648	Other	TN	RAILROAD 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

How do I verify Mark Grenkoski's NPI record?

Cross-check NPI 1174567754 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1174567754 active?

Yes, as of the latest NPPES snapshot, NPI 1174567754 is active (record last updated 2023-08-01).

Other providers at this practice address

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Joan Queng Family Medicine Physician · Robbinsville, NC NPI 1215932298 Kathryn Lynch Family Medicine Physician · Robbinsville, NC NPI 1033115563 Patricia Johnson Family Medicine Physician · Robbinsville, NC NPI 1528064698 Tallulah Health Center, P.A. Family Medicine Physician · Robbinsville, NC NPI 1558336073 John Rizza General Practice Dentistry · Robbinsville, NC NPI 1730193111 William Clayton Orthopaedic Surgery Physician · Robbinsville, NC NPI 1801980727 Wayne Hoffman Family Medicine Physician · Robbinsville, NC NPI 1306918784 Lisa Ferrigno Physician Assistant · Robbinsville, NC NPI 1508929936

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-01.