James D Duffy, MD - Medicare Psychiatry in Mystic, CT

James D Duffy, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Mystic, Connecticut. He graduated from medical school in 1979 and has 45 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Hartford Healthcare Medical Group Specialists Pllc and his current practice location is 100 Perkins Farm Drive, Suite 102, Mystic, Connecticut. You can reach out to his office (for appointments etc.) via phone at (860) 870-6385.

James D Duffy is licensed to practice in California (license number C56124) 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 1831118736.

Contact Information

James D Duffy, MD
100 Perkins Farm Drive, Suite 102,
Mystic, CT 06355
(860) 870-6385
(860) 245-0000

Map and Direction




Physician's Profile

Full NameJames D Duffy
GenderMale
SpecialityPsychiatry
Experience45 Years
Location100 Perkins Farm Drive, Mystic, 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:
  • James D Duffy graduated from medical school in 1979
  NPI Data:
  • NPI Number: 1831118736
  • Provider Enumeration Date: 07/19/2006
  • Last Update Date: 07/19/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9032190715
  • Enrollment ID: I20040527001121

Medical Identifiers

Medical identifiers for James D Duffy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831118736NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry C56124 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hartford Healthcare Medical Group Specialists Pllc31738662411180

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. James D Duffy allows following entities to bill medicare on his behalf.
Entity NameHartford Healthcare Medical Group Specialists Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023584216
PECOS PAC ID: 3173866241
Enrollment ID: O20190514001441

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. James D Duffy 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
James D Duffy, MD
100 Perkins Farm Drive, Suite 102,
Mystic, CT 06355

Ph: (510) 752-1000
James D Duffy, MD
100 Perkins Farm Drive, Suite 102,
Mystic, CT 06355

Ph: (860) 870-6385

Reviews and Comments


Psychiatry & Neurology Doctors in Mystic, CT

Maria L. Moro-de-casillas, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Perkins Farm Drive, Suite 103, Mystic, CT 06355
Phone: 860-870-6385    Fax: 860-245-0000
Dr. Renee S Kohanski, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 11 Main St, Mystic, CT 06355
Phone: 860-334-4576    Fax: 855-800-6850
Katherine Podraza, MD PHD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Perkins Farm Dr Ste 303, Mystic, CT 06355
Phone: 860-696-2925    
David Tinklepaugh, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 100 Perkins Farm Dr, Mystic, CT 06355
Phone: 860-886-1433    

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.