Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ramanathan Nagappan, MD

Cardiovascular Disease Physician in Lansing, MI · enumerated 2006.

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

National Provider Identifier

1821197435

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Registry record

Entity type Individual (Type 1)

Name Ramanathan Nagappan

Credential MD

Sex Male

Practice address 1200 E Michigan Ave Ste 725, Lansing, MI, 48912

Phone (517) 364-5599

Fax (517) 364-5590

Enumeration date Sep 21, 2006

Last updated in NPPES Jun 6, 2011

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 43149 (MI) 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
2500031	Other	MI	PHYSICIANS HEALTH PLAN
139840	Other	MI	GREAT LAKES HEALTH PLAN
1425801	Medicaid	MI	-
C2100	Other	MI	MCARE
RN043149	Other	MI	BCBS
2570131	Other	MI	PHYS HEALTH PLAN FAMILY
1228780003	Other	MI	WELLNESS PLAN
201602	Other	MI	MCLAREN
RN043149	Other	MI	BLUE CARE NETWORK
110091891	Other	MI	TRAVELERS 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

Where does Ramanathan Nagappan practice?

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

What is the NPI number for Ramanathan Nagappan?

The National Provider Identifier (NPI) for Ramanathan Nagappan is 1821197435, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Ashley Plunkey Acute Care Nurse Practitioner · Lansing, MI NPI 1174228779

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-06.