Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrea A Peterson, MD

Internal Medicine Physician in Norwalk, CT · enumerated 2006.

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

National Provider Identifier

1245200187

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrea A Peterson

Credential MD

Sex Female

Practice address 24 Stevens St, Norwalk, CT, 06850

Phone (203) 852-2375

Enumeration date Jan 24, 2006

Last updated in NPPES Oct 1, 2008

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 40602 (CT) Secondary

207QA0505X Adult Medicine Physician Allopathic & Osteopathic Physicians · License 040602 (CT) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 040602 (CT) 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
OV2706	Other	CT	HEALTHNET
2254541	Other	CT	UHC
2991975	Other	CT	AETNA
010040602CT01	Other	CT	ANTHEM B/C
P2718821	Other	CT	OXFORD
5565197	Other	CT	CIGNA
001406025	Medicaid	CT	-
40602	Other	CT	CONNECTICARE

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

Is NPI 1245200187 active?

Yes, as of the latest NPPES snapshot, NPI 1245200187 is active (record last updated 2008-10-01).

How do I verify Andrea Peterson's NPI record?

Cross-check NPI 1245200187 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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James Babashak Anesthesiology Physician · Norwalk, CT NPI 1932102803 Tammy Mahroos Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1235132093 Garrett Nguyen Anesthesiology Physician · Norwalk, CT NPI 1740283621 Carolyn Mastroni Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1316940166 Linda Versea Adult Health Nurse Practitioner · Norwalk, CT NPI 1861495681 Janet Segen Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1083617831 Eve Zacharakos Certified Registered Nurse Anesthetist · Norwalk, CT NPI 1144223991 Lucia Vigna Anesthesiology Physician · Norwalk, CT NPI 1104829076

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-01.