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Dr. Joel T Callahan Sr., M.D.

Gastroenterology Physician in Meridian, MS · enumerated 2005 · practices at Joel T Callahan Thomas H Greer Jr & A Gary Boone Ptr.

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

National Provider Identifier

1699752246

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Registry record

Entity type Individual (Type 1)
Name Dr. Joel T Callahan Sr.
Credential M.D.
Sex Male
Practice address 1600 22nd Ave, Medical Towers III, Meridian, MS, 39301
Phone (601) 483-5322
Fax (601) 581-2289
Enumeration date Dec 26, 2005
Last updated in NPPES Jun 2, 2011

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 05095 (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
00121750 Medicaid MS -

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

What is the NPI number for Joel Callahan?
The National Provider Identifier (NPI) for Joel Callahan is 1699752246, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joel Callahan practice?
The practice location on file with NPPES is in Meridian, MS. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-02.