Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Las Vegas Professional Group - Calarco, P. C.

Addiction Psychiatry Physician in Las Vegas, NV · enumerated 2013 · authorized official Mark Calarco, Facility Ceo.

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

National Provider Identifier

1609116003

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Las Vegas Professional Group - Calarco, P. C.

Practice address 2465 E Twain Ave, Las Vegas, NV, 89121

Phone (615) 727-8387

Fax (615) 457-8094

Enumeration date Feb 21, 2013

Last updated in NPPES Aug 25, 2021

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mark Calarco

Title Facility 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 Las Vegas Professional Group - Calarco, P. C.?

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

What is the NPI number for Las Vegas Professional Group - Calarco, P. C.?

The NPI for Las Vegas Professional Group - Calarco, P. C. is 1609116003, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

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