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DR. ANDREA A PETERSON MD
NPI 1245200187
Internal Medicine in Norwalk, CT

Active since January 24, 2006PECOS Enrolled
24 STEVENS ST, NORWALK, CT 06850(203) 852-2375 Get Directions Write a Review

NPPES record last updated: October 1, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Andrea A Peterson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ANDREA A PETERSON MD (NPI 1245200187) is an individual internal medicine provider in Norwalk, Connecticut, licensed in Connecticut (040602) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245200187
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. ANDREA A PETERSONCredential: MD
Location Address24 STEVENS STNorwalk, CT 06850-3852
Mailing Address24 Stevens StNorwalk, CT 06850-3852 · (203) 852-2375
Phone(203) 852-2375
Sole ProprietorNo
Enumeration DateJanuary 24, 2006
Last NPPES UpdateOctober 1, 2008
✔ NPI 1245200187 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 040602
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedFamily Medicine · Adult MedicineTaxonomy 207QA0505X · License 040602 (CT)
Also ListedHospitalistTaxonomy 208M00000X · License 40602 (CT)
24 STEVENS ST, Norwalk, CT 06850
Open in Google Maps ↗

Other Identifiers 10

Other2254541CT · Uhc
Medicare UPINH69738
Other2991975CT · Aetna
Other010040602CT01CT · Anthem B/c
OtherP2718821CT · Oxford
Other40602CT · Connecticare
Medicare UPIN110008663
Medicaid001406025CT
OtherOV2706CT · Healthnet
Other5565197CT · Cigna

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Andrea A Peterson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Andrea Peterson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Norwalk Hospital Association
0.1 mi
General Acute Care Hospital
34 MAPLE ST
Norwalk, CT 06850
  • Reassigned Medicare billing, Connecticut enrollment
  • 113 clinicians in this Medicare group
NPI 1427041581 (203) 852-2216
Hartford Healthcare Medical Group Specialists, PLLC
59 mi
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
NPI 1023584216 (860) 246-2071

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06850 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. EVE BLOCK MD
Internal Medicine (Hospice and Palliative Medicine)
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2665
RUTH C PERRY CRNA
Nurse Anesthetist, Certified Registered
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2276
DR. RICHARD LAWRENCE MAIBERGER M.D.
Psychiatry & Neurology (Psychiatry)
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2293
RICHARD A HUGHES MD
Anesthesiology
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2276
MRS. ERIKA JAYNE PEARL PA-C
Physician Assistant (Surgical)
24 STEVENS ST, NORWALK HOSPITAL DEPARTMENT OF SURGERY
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2464
JAN CRISTOPHER HERNANDEZ DE GUZMAN PHARMD, MSF, RPH
Pharmacist
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2690
PAUL R BEILES MD
Anesthesiology
24 STEVENS ST
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-2276
MS. IRIS NAGIN RNP
Nurse Practitioner (Adult Health)
24 STEVENS ST, HOSPITALIST SUITE
NORWALK, CT 06850
Western Connecticut Planning Region (203) 852-3072

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Andrea Peterson's NPI number?

The NPI number for Andrea Peterson is 1245200187. It was assigned to this individual provider in the NPPES registry on January 24, 2006.

Where is Andrea Peterson located?

Andrea Peterson practices at 24 Stevens St, Norwalk, CT 06850. The listed phone number is (203) 852-2375.

What is Andrea Peterson's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Andrea Peterson enrolled in Medicare?

Yes. Andrea Peterson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Andrea Peterson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Peterson reassigns Medicare benefits to 2 organizations: Norwalk Hospital Association (Norwalk, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Andrea Peterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Andrea Peterson was last updated on October 1, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.