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Jeffrey I Grass, MD

Radiation Oncology Physician in Fairfield, OH · enumerated 2006.

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

National Provider Identifier

1275574535

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Registry record

Entity type Individual (Type 1)
Name Jeffrey I Grass
Credential MD
Sex Male
Practice address 2960 Mack Rd Ste 105, Fairfield, OH, 45014
Phone (513) 751-2273
Enumeration date Jun 9, 2006
Last updated in NPPES Apr 22, 2021

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 37561 (KY) Secondary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 35-071641 (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
2230697 Medicaid OH -
200833060 Medicaid IN -
7100002030 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 NPI 1275574535 active?
Yes, as of the latest NPPES snapshot, NPI 1275574535 is active (record last updated 2021-04-22).
How do I verify Jeffrey Grass's NPI record?
Cross-check NPI 1275574535 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-22.