Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John C Halbrook, MD

Hematology & Oncology Physician in Meridian, MS · enumerated 2005 · practices at Meridian Oncology Associates Pllc.

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

National Provider Identifier

1992782924

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Registry record

Entity type Individual (Type 1)

Name Dr. John C Halbrook

Credential MD

Sex Male

Practice address 1704 23rd Ave, Meridian, MS, 39301

Phone (601) 482-1555

Fax (601) 696-4608

Enumeration date Dec 30, 2005

Last updated in NPPES Oct 15, 2024

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 07013 (MS) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 07013 (MS) 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
000121501	Medicaid	MS	-
900004196	Other	MS	PALMETTO GBA RAILROAD
CF9149	Other	MS	RAILROAD GROUP #
830000087	Other	MS	MEDICARE LEGACY
1164433678	Other	MS	CLINIC NPI

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 John Halbrook?

The National Provider Identifier (NPI) for John Halbrook is 1992782924, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Halbrook practice?

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

Other providers at this practice address

Browse all →

Meridian Oncology Associates Pllc Non-Pharmacy Dispensing Site · Meridian, MS NPI 1164433678 John Voss Hematology & Oncology Physician · Meridian, MS NPI 1780793059 Matthew Cassell Hematology & Oncology Physician · Meridian, MS NPI 1427269331 Caleb Dulaney Radiation Oncology Physician · Meridian, MS NPI 1437592276

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-15.