Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas Robert Rader, M.D.

Ophthalmology Physician in Greenwood, IN · enumerated 2005.

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

National Provider Identifier

1912990144

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Registry record

Entity type Individual (Type 1)

Name Nicholas Robert Rader

Credential M.D.

Sex Male

Practice address 30 N Emerson Ave, Greenwood, IN, 46143

Phone (317) 881-3937

Fax (317) 887-4008

Enumeration date Aug 23, 2005

Last updated in NPPES Feb 1, 2010

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 01026346A (IN) 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
100153400	Medicaid	IN	-
000000011607	Other	IN	SENIOR SMART CHOICE
0004361323	Other	IN	AETNA
180044026	Other	IN	RAILROAD MEDICARE
154807	Other	IN	COLE VISION
000000011607	Other	IN	MPLAN
000000214825	Other	IN	BCBS
352129520	Other	IN	UNITED MINE WORKERS

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

What is the NPI number for Nicholas Rader?

The National Provider Identifier (NPI) for Nicholas Rader is 1912990144, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nicholas Rader practice?

The practice location on file with NPPES is in Greenwood, IN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-01.