Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Francis Coolahan III, M.D.

Student in an Organized Health Care Education/Training Program in Memphis, TN · enumerated 2010.

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

National Provider Identifier

1215249123

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Registry record

Entity type Individual (Type 1)

Name John Francis Coolahan III

Credential M.D.

Sex Male

Practice address Memphis, TN, 38103

Phone (901) 448-5364

Enumeration date Jul 8, 2010

Last updated in NPPES Jul 8, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care 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 John Coolahan practice?

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

What is the NPI number for John Coolahan?

The National Provider Identifier (NPI) for John Coolahan is 1215249123, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-08.