Gregory R D'onofrio, MD - Medicare Cardiovascular Disease (cardiology) in Stamford, CT

Gregory R D'onofrio, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Stamford, Connecticut. He went to George Washington University School Of Medicine and graduated in 1967 and has 57 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Stamford Health Medical Group Inc and his current practice location is 29 Hospital Plaza, Suite 502, Stamford, Connecticut. You can reach out to his office (for appointments etc.) via phone at (203) 348-7410.

Gregory R D'onofrio is licensed to practice in Connecticut (license number 149608) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1255304796.

Contact Information

Gregory R D'onofrio, MD
29 Hospital Plaza, Suite 502,
Stamford, CT 06902-3602
(203) 348-7410
(203) 961-8488

Map and Direction




Physician's Profile

Full NameGregory R D'onofrio
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience57 Years
Location29 Hospital Plaza, Stamford, Connecticut
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gregory R D'onofrio attended and graduated from George Washington University School Of Medicine in 1967
  NPI Data:
  • NPI Number: 1255304796
  • Provider Enumeration Date: 02/07/2006
  • Last Update Date: 09/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5698890424
  • Enrollment ID: I20100916000299

Medical Identifiers

Medical identifiers for Gregory R D'onofrio such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255304796NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 149608 (Connecticut)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stamford HospitalStamford, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Stamford Health Medical Group Inc6901099746355

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. Gregory R D'onofrio allows following entities to bill medicare on his 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

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. Gregory R D'onofrio 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
Gregory R D'onofrio, MD
29 Hospital Plaza, Suite 502,
Stamford, CT 06902-3602

Ph: (203) 348-7410
Gregory R D'onofrio, MD
29 Hospital Plaza, Suite 502,
Stamford, CT 06902-3602

Ph: (203) 348-7410

Reviews and Comments


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Dr. Brian Sebastian Wojeck, M.D. M. P.H
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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.

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