JAMES D. DUFFY MD
NPI 1831118736
Psychiatry & Neurology - Psychiatry in Mystic, CT

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
84.47/100
CMS Quality Rating
100 PERKINS FARM DRIVE, SUITE 102, MYSTIC, CT 06355(860) 870-6385(860) 245-0000 Get Directions Write a Review

NPPES record last updated: July 19, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About James D. Duffy Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES D. DUFFY MD (NPI 1831118736) is an individual psychiatry provider in Mystic, Connecticut, licensed in California (C56124) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1979).

NPPES Registry Identity

NPI1831118736
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameJAMES D. DUFFYCredential: MD
Location Address100 PERKINS FARM DRIVE, SUITE 102Mystic, CT 06355
Mailing Address100 Perkins Farm Drive, Suite 102Mystic, CT 06355 · (510) 752-1000
Fax(860) 245-0000
Sole ProprietorNo
Medical School CMSOtherGraduated 1979
Enumeration DateJuly 19, 2006
Last NPPES UpdateJuly 19, 2022
NPPES CertifiedJuly 19, 2022
NPI 1831118736 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License Licensed in CA · C56124
Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

100 PERKINS FARM DRIVE, Mystic, CT 06355

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

James D. Duffy Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032190715
PECOS Enrollment IDI20040527001121
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit, 40-54 minutes 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
70 services23 patients
New patient office or other outpatient visit, 60-74 minutes 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
48 services48 patients
Established patient office or other outpatient visit, 30-39 minutes 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
19 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06355 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$183.10 typical visit price
range $60.82 – $183.10
Typical copayment $45.77 (range $15.20 – $45.77)
Most-billed visit code 99205
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.47/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality79.28
Promoting Interoperability100
Improvement Activities40
Cost59.59

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Psychiatry & Neurology (Neurology)
100 PERKINS FARM DRIVE, SUITE 103
MYSTIC, CT 06355
Physician Assistant (Medical)
100 PERKINS FARM DRIVE, SUITE 102
MYSTIC, CT 06355
Psychiatry & Neurology (Neurology)
100 PERKINS FARM DRIVE, SUITE 102
MYSTIC, CT 06355

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Duffy's NPI number?

The NPI number for James Duffy is 1831118736. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is James Duffy located?

James Duffy practices at 100 Perkins Farm Drive Suite 102, Mystic, CT 06355. The listed phone number is (860) 870-6385.

What is James Duffy's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is James Duffy enrolled in Medicare?

Yes. James Duffy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for James Duffy was last updated on July 19, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.