Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Linda J Greff, MD

Ophthalmology Physician in Cincinnati, OH · enumerated 2006.

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

National Provider Identifier

1538108923

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Registry record

Entity type Individual (Type 1)

Name Dr. Linda J Greff

Credential MD

Sex Female

Practice address 1945 Cei Drive, Cincinnati, OH, 45242

Phone (513) 569-3741

Fax (513) 569-3941

Enumeration date Jun 4, 2006

Last updated in NPPES Dec 18, 2007

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 35061757 (OH) 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
000000021136	Other	-	BCBS
0843618	Medicaid	OH	-
100374630	Medicaid	IN	-
180026061	Other	OH	RAILROAD MEDICARE
64867930	Medicaid	KY	-

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 Linda Greff?

Linda Greff is registered in NPPES with the primary taxonomy of Ophthalmology 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 2007-12-18.