Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ajit Kumar, M.D.

Q: What is the NPI number for Ajit Kumar?

The National Provider Identifier (NPI) for Ajit Kumar is 1609818558, a Type 1 (individual) record in the CMS NPPES registry.

Interventional Pain Medicine Physician in Oak Lawn, IL · enumerated 2006.

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

National Provider Identifier

1609818558

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Registry record

Entity type Individual (Type 1)

Name Dr. Ajit Kumar

Credential M.D.

Sex Male

Practice address 4440 W 95th St, Oak Lawn, IL, 60453

Phone (708) 684-8000

Enumeration date Jun 12, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians Secondary

208VP0014X Interventional Pain Medicine Physician Allopathic & Osteopathic Physicians Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for Ajit Kumar?

The National Provider Identifier (NPI) for Ajit Kumar is 1609818558, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ajit Kumar practice?

The practice location on file with NPPES is in Oak Lawn, IL. 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 2025-09-11.