Dr Mary Mackessy, MD - Medicare Emergency Medicine in New Milford, CT

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Dr Mary Mackessy, MD is a medicare enrolled "Emergency Medicine" physician in New Milford, Connecticut. Her current practice location is 21 Elm Street, New Milford, Connecticut. You can reach out to her office (for appointments etc.) via phone at (860) 350-7222.

Dr Mary Mackessy is licensed to practice in Connecticut (license number 045768) 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 1366637084.

Contact Information

Dr Mary Mackessy, MD
21 Elm Street,
New Milford, CT 06776
(860) 350-7222
Not Available

Map and Direction




Physician's Profile

Full NameDr Mary Mackessy
GenderFemale
SpecialityEmergency Medicine
Location21 Elm Street, New Milford, Connecticut
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1366637084
  • Provider Enumeration Date: 09/06/2007
  • Last Update Date: 11/18/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 3274622139
  • Enrollment ID: I20071130000350

Medical Identifiers

Medical identifiers for Dr Mary Mackessy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366637084NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 045768 (Connecticut)Primary
207P00000XEmergency Medicine 243200 (New York)Secondary

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 Mary Mackessy allows following entities to bill medicare on her behalf.
Entity NameDanbury Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548293343
PECOS PAC ID: 1557273935
Enrollment ID: O20031104000476
Entity NameNuvance Health Medical Practice Ct Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407898117
PECOS PAC ID: 4789597691
Enrollment ID: O20031205000130
Entity NameThe Hospital Of Central Connecticut At New Britain General And Bradley
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063461481
PECOS PAC ID: 6507776564
Enrollment ID: O20040115000497
Entity NameThe Charlotte Hungerford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629075734
PECOS PAC ID: 4486557501
Enrollment ID: O20040128000183
Entity NameNorwalk Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427041581
PECOS PAC ID: 3375436660
Enrollment ID: O20040202000988
Entity NameHartford Healthcare Urgent Care Centers Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093239683
PECOS PAC ID: 7618242777
Enrollment ID: O20170929001464

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 Mary Mackessy 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 Mary Mackessy, MD
21 Elm Street,
New Milford, CT 06776

Ph: (860) 350-7222		Dr Mary Mackessy, MD
21 Elm Street,
New Milford, CT 06776

Ph: (860) 350-7222

Reviews and Comments


Emergency Medicine Doctors in New Milford, CT

Dr. Thomas J. Koobatian, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 21 Elm St, New Milford, CT 06776
Phone: 860-210-7490    Fax: 860-350-7297
Dr. Frederick Lohse, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 21 Elm St, New Milford, CT 06776
Phone: 860-210-7490    Fax: 860-350-7297
Dr. Edith Chu, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 21 Elm St, New Milford, CT 06776
Phone: 860-210-7490    Fax: 860-350-7297
Victor Isaac Cohen, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 7 Linden Tree Rd, New Milford, CT 06776
Phone: 860-350-2262    

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.