Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Pontchartrain Medical Group, A Professional Corporation

Addiction Medicine (Psychiatry & Neurology) Physician in Brentwood, TN · enumerated 2016 · authorized official Mark Calarco, Ceo.

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

National Provider Identifier

1356704357

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Registry record

Entity type Organization (Type 2)

Legal business name Pontchartrain Medical Group, A Professional Corporation

Practice address 200 Powell Pl, Attn: Legal Department, Brentwood, TN, 37027

Phone (615) 732-1605

Enumeration date Mar 29, 2016

Last updated in NPPES Aug 25, 2021

Taxonomy & classification

207RA0401X Addiction Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary

2084A0401X Addiction Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mark Calarco

Title Ceo

Phone (615) 712-5862

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

Who is the authorized official for Pontchartrain Medical Group, A Professional Corporation?

NPPES lists Mark Calarco (Ceo) as the authorized official for this organization.

What is the NPI number for Pontchartrain Medical Group, A Professional Corporation?

The NPI for Pontchartrain Medical Group, A Professional Corporation is 1356704357, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-25.