Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher H Rajkumar, M.D.

Hospitalist Physician in Middletown, NY · enumerated 2011.

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

National Provider Identifier

1275813651

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Registry record

Entity type Individual (Type 1)

Name Christopher H Rajkumar

Credential M.D.

Sex Male

Practice address 155 Crystal Run Rd, Middletown, NY, 10941

Phone (845) 703-6999

Fax (845) 703-6297

Enumeration date Aug 17, 2011

Last updated in NPPES Oct 14, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 39792 (IA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 287127 (NY) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 287127 (NY) 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

Where does Christopher Rajkumar practice?

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

What is the NPI number for Christopher Rajkumar?

The National Provider Identifier (NPI) for Christopher Rajkumar is 1275813651, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-14.