Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Alliance Medical Group of Greater Waterbury PC

Internal Medicine Physician in Middlebury, CT · enumerated 2006 · authorized official Mark Aresco, President.

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

National Provider Identifier

1750306015

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Alliance Medical Group of Greater Waterbury PC

Practice address 1625 Straits Tpke, Middlebury, CT, 06762

Phone (203) 573-9512

Fax (203) 568-2904

Enumeration date Jul 13, 2006

Last updated in NPPES Sep 3, 2009

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians Secondary

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians Secondary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Mark Aresco

Title President

Phone (203) 573-9512

Other identifiers

Identifier	Type	State	Issuer
004213005	Medicaid	CT	-
004263977	Medicaid	CT	-
004203056	Medicaid	CT	-
004213013	Medicaid	CT	-
004167872	Medicaid	CT	-

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 Alliance Medical Group of Greater Waterbury PC?

NPPES lists Mark Aresco (President) as the authorized official for this organization.

What is the NPI number for Alliance Medical Group of Greater Waterbury PC?

The NPI for Alliance Medical Group of Greater Waterbury PC is 1750306015, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-03.