EILEEN ELIZABETH O'REGAN MD
NPI 1932273299
Internal Medicine in Cheshire, CT

Q: What is Eileen O'regan's NPI number?

The NPI number for Eileen O'regan is 1932273299. It was assigned to this individual provider in the NPPES registry on November 20, 2006.

Q: What is Eileen O'regan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Eileen O'regan was last updated on August 14, 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.

Active since November 20, 2006PECOS Enrolled

1781 HIGHLAND AVE, SUITE 102, CHESHIRE, CT 06410(203) 272-1990(203) 271-0668 Get Directions Write a Review

NPPES record last updated: August 14, 2008. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Eileen Elizabeth O'regan Md NPPES

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

EILEEN ELIZABETH O'REGAN MD (NPI 1932273299) is an individual internal medicine provider in Cheshire, Connecticut, licensed in Connecticut (029098) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1932273299

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameEILEEN ELIZABETH O'REGANCredential: MD

Location Address1781 HIGHLAND AVE, SUITE 102Cheshire, CT 06410-1254

Mailing Address1781 Highland Ave, Suite 102Cheshire, CT 06410-1254 · (203) 272-1990 · Fax (203) 271-0668

Phone(203) 272-1990

Fax(203) 271-0668

Sole ProprietorNo

Enumeration DateNovember 20, 2006

Last NPPES UpdateAugust 14, 2008

✔ NPI 1932273299 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CT · 029098

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.

1781 HIGHLAND AVE, Cheshire, CT 06410

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Other Identifiers 10

Medicare ID-Type Unspecified110005977CT

Other212170CT · Cigna

Other290980CT · Connecticare

Medicaid1290981CT

Other4564088CT · Aetna

Other0V0453CT · Healthnet

OtherP1024372CT · Oxford

Other010029098CT01CT · Blue Shield

Medicare UPINE42809CT

Medicare PIN110010666CT

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Eileen Elizabeth O'regan 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 Reassignment

Medicare enrollment records show Eileen O'regan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hartford Healthcare Medical Group, Inc

15 mi

Surgery

1290 SILAS DEANE HWY, ATTN: LINDA STRAKA
Wethersfield, CT 06109

Reassigned Medicare billing, Connecticut enrollment
747 clinicians in this Medicare group

NPI 1043561301 (860) 972-9033

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 06410 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 8

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

KRB, LLC

Counselor (Mental Health)

1781 HIGHLAND AVE
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (619) 618-5387

LINDITA VINCA APRN

Nurse Practitioner

1781 HIGHLAND AVE, SUITE 106
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 694-5857

MICHELLE S MALANE M.D.

Dermatology (Procedural Dermatology)

1781 HIGHLAND AVE
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 272-3376

DEBORAH ASHTON MOLLOY MS,APRN

Nurse Practitioner (Women's Health)

1781 HIGHLAND AVE, SUITE 102
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 272-1990

ERIN KATHLEEN CARDON MD

Internal Medicine

1781 HIGHLAND AVE, SUITE 102
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 272-1990

DR. FRANK ANTHONY SANTORO M.D.

Dermatology

1781 HIGHLAND AVE, SUITE 106
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 694-5857

CONNECTICUT DERMATOLOGY LLC

Specialist

1781 HIGHLAND AVE
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 272-3376

NEW LIFE PLUS, PC

Internal Medicine

1781 HIGHLAND AVE, SUITE 102
CHESHIRE, CT 06410

Naugatuck Valley Planning Region (203) 272-1990

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 Eileen O'regan's NPI number?

The NPI number for Eileen O'regan is 1932273299. It was assigned to this individual provider in the NPPES registry on November 20, 2006.

Where is Eileen O'regan located?

Eileen O'regan practices at 1781 Highland Ave Suite 102, Cheshire, CT 06410. The listed phone number is (203) 272-1990.

What is Eileen O'regan's specialty?

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

Is Eileen O'regan enrolled in Medicare?

Yes. Eileen O'regan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Eileen O'regan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eileen O'regan reassigns Medicare benefits to Hartford Healthcare Medical Group, Inc (Wethersfield, CT). The 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 Eileen O'regan'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 Eileen O'regan was last updated on August 14, 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.