Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gnanaraj Johnson Koilpillai, M.D.

Family Medicine Physician in Frederick, MD · enumerated 2006.

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

National Provider Identifier

1245218064

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Registry record

Entity type Individual (Type 1)

Name Gnanaraj Johnson Koilpillai

Credential M.D.

Sex Male

Practice address 194 Thomas Johnson Dr, Suite A, Frederick, MD, 21702

Phone (240) 215-6310

Fax (240) 566-7751

Enumeration date Jan 3, 2006

Last updated in NPPES Jul 30, 2019

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0057285 (MD) 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
211841	Other	MD	MEDICARE PROVIDER #

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

How do I verify Gnanaraj Koilpillai's NPI record?

Cross-check NPI 1245218064 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245218064 active?

Yes, as of the latest NPPES snapshot, NPI 1245218064 is active (record last updated 2019-07-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-30.