Dr Theresa R Mahon, MD - Medicare Obstetrics & Gynecology in Stamford, CT

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Dr Theresa R Mahon, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Stamford, Connecticut. Her current practice location is 1 Hospital Plz, Stamford, Connecticut. You can reach out to her office (for appointments etc.) via phone at (203) 276-2030.

Dr Theresa R Mahon is licensed to practice in New York (license number 216249) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1831256916.

Contact Information

Dr Theresa R Mahon, MD
1 Hospital Plz,
Stamford, CT 06902-3602
(203) 276-2030
(203) 276-7908

Map and Direction




Physician's Profile

Full NameDr Theresa R Mahon
GenderFemale
SpecialityObstetrics & Gynecology
Location1 Hospital Plz, Stamford, Connecticut
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1831256916
  • Provider Enumeration Date: 01/02/2007
  • Last Update Date: 01/16/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2567553613
  • Enrollment ID: I20110815000762

Medical Identifiers

Medical identifiers for Dr Theresa R Mahon such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831256916NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 216249 (New York)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Theresa R Mahon allows following entities to bill medicare on her behalf.
Entity NameStamford Health Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154633980
PECOS PAC ID: 6901099746
Enrollment ID: O20101025000743
Entity NameObhg Connecticut Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861985129
PECOS PAC ID: 5890164792
Enrollment ID: O20221216000249

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Theresa R Mahon is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Theresa R Mahon, MD
1 Hospital Plz,
Stamford, CT 06902-3602

Ph: (203) 276-2030		Dr Theresa R Mahon, MD
1 Hospital Plz,
Stamford, CT 06902-3602

Ph: (203) 276-2030

Reviews and Comments


Obstetrics & Gynecology Doctors in Stamford, CT

Dr. Scott A. Cole, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 1 Hospital Plz, Stamford, CT 06902
Phone: 203-276-2030    Fax: 203-276-7908
Vito Ferrucci, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 833 Summer St, Suite 1b, Stamford, CT 06901
Phone: 203-325-4665    Fax: 203-359-0902
Brian Steven Sheets, DO
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 992 High Ridge Rd, Stamford, CT 06905
Phone: 203-321-1300    Fax: 203-321-8462
Regina Cheng, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 29 Hospital Plz Ste 400, Stamford, CT 06902
Phone: 203-325-4321    Fax: 203-975-7515
Dr. Richard Roger Viscarello Jr., M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 1275 Summer Street, Suite 306, Stamford, CT 06905
Phone: 203-978-5775    Fax: 203-978-5777
Dr. Antonios J Panagiotakis, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1275 Summer St, Stamford, CT 06905
Phone: 203-353-9099    Fax: 203-353-9699
Sarah S Kim, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 1 Hospital Plz, Stamford, CT 06902
Phone: 203-276-7133    Fax: 203-276-7908

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.