NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Nagaratnam Arul Ranjithan, M.D.

Nephrology Physician in Cumberland, MD · enumerated 2006.

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

National Provider Identifier

1245284355

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Registry record

Entity type Individual (Type 1)
Name Dr. Nagaratnam Arul Ranjithan
Credential M.D.
Sex Male
Practice address Cumberland, MD, 21502
Phone (301) 777-9393
Fax (301) 777-9066
Enumeration date May 22, 2006
Last updated in NPPES Mar 26, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License D0019318 (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
220981100 Medicaid MD -

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 1245284355 active?
Yes, as of the latest NPPES snapshot, NPI 1245284355 is active (record last updated 2010-03-26).
How do I verify Nagaratnam Ranjithan's NPI record?
Cross-check NPI 1245284355 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 2010-03-26.