NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

R. Arunachalam, MD, PC

Cardiovascular Disease Physician in Nashville, TN · enumerated 2007 · authorized official R. Arunachalam, Sole Owner.

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

National Provider Identifier

1558544221

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name R. Arunachalam, MD, PC
Practice address 395 Wallace Rd, Suite B301, Nashville, TN, 37211
Phone (615) 942-7230
Fax (615) 942-7237
Enumeration date Dec 17, 2007
Last updated in NPPES Jun 21, 2008

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD0000039953 (TN) Primary

Authorized official

Name R. Arunachalam
Title Sole Owner
Phone (615) 942-7230

Other identifiers

Identifier Type State Issuer
33324051 Other TN MEDICARE INDIVIDUAL PTAN
33324052 Other TN MEDICARE GROUP PTAN
1558544221 Other TN GROUP NPI
1467562611 Other TN INDIVIDUAL NPI
4169800 Other TN BCBS PROVIDER NUMBER

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 current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-06-21. Verify at npiregistry.cms.hhs.gov.
Where is R. Arunachalam, MD, PC located?
The practice location on file with NPPES is in Nashville, TN.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-21.