James D. Duffy, MD
Psychiatry Physician · Mystic, CT
James D. Duffy, MD is a psychiatry physician with a practice address in Mystic, Connecticut, and NPI 1831118736, issued on Jul 19, 2006. Check the license on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- James D. Duffy
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- C56124 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Perkins Farm Drive, Mystic, CT 06355
- Phone
- (860) 870-6385
- Enumerated
- Jul 19, 2006
- Record last updated
- Jul 19, 2022
- Fax
- (860) 245-0000
- Medicare enrollment
- Enrolled (PECOS I20040527001121); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,174 in Connecticut → Look up another NPI →
Also registered at 100 Perkins Farm Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James D. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average psychiatry physician in 2024
223 Medicare Part D claims for 38 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Buspirone Hcl50 claims
- Clonazepam32 claims
- Sertraline Hcl22 claims
- Fluoxetine Hcl21 claims
- Venlafaxine Hcl Er20 claims
- Mirtazapine15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $19.61
1 payment: food and beverage; the largest payer was Amneal Pharmaceuticals LLC. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCMystic, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James D. Duffy among 1,174 psychiatry physician records in Connecticut
James D. Duffy, MD is one of 1,174 psychiatry physician records with a practice address in Connecticut. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 60% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1979 · median 2003 among the 503 with a school on file
- Record last updated2022 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Connecticut
There are 1,174 psychiatry physician records in Connecticut.
All 1,174 in Connecticut → Every provider in Mystic → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Renee Kohanski, M.D.Mystic, CT 063551336354109
- Eric Watsky, MDNiantic, CT 063571205179231
- Luis Avalos, M.D.Norwich, CT 063601073523106
- Barclay Caras, MDNorwich, CT 063601346265592
- Pramodini Deshpande, MDNorwich, CT 063601750454161
- Rama Goyal, MD PANorwich, CT 063601952474959
- Walid Jaziri, M.D.Norwich, CT 063601760538102
- Martin Maloney, DONorwich, CT 063601588629679
Common questions
What is James D. Duffy, MD's NPI number?
James D. Duffy, MD's National Provider Identifier (NPI) is 1831118736, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James D. Duffy, MD located?
The NPPES record lists a practice address at 100 Perkins Farm Drive, Mystic, CT, 06355. Phone: (860) 870-6385. Providers update this record themselves, so call before visiting.
How can I verify James D. Duffy, MD's license?
Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James D. Duffy, MD prescribe under Medicare Part D?
In 2024, James D. Duffy, MD had 223 Medicare Part D claims for 38 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is James D. Duffy, MD's MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.