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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN ALEXANDER DUFFY MD
NPI 1861997025
Pediatrics - Sports Medicine in Philadelphia, PA

Active since March 28, 2018PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
3401 CIVIC CENTER BLVD, PHILADELPHIA, PA 19104(215) 590-1527 Get Directions Write a Review

NPPES record last updated: July 5, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John Alexander Duffy Md NPPES

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

DR. JOHN ALEXANDER DUFFY MD (NPI 1861997025) is an individual sports medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MT235940) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with M Health Fairview University Of Mn, and is a graduate of New York Medical College (2018).

NPPES Registry Identity

NPI1861997025
Entity TypeIndividualMale
Primary Taxonomy2080S0010X
Provider Legal NameDR. JOHN ALEXANDER DUFFYCredential: MD
Location Address3401 CIVIC CENTER BLVDPhiladelphia, PA 19104-4319
Mailing Address3401 Civic Center BlvdPhiladelphia, PA 19104-4319
Phone(215) 590-1527
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 2018
Enumeration DateMarch 28, 2018
Last NPPES UpdateJuly 5, 2026
NPPES CertifiedJuly 5, 2026
✔ NPI 1861997025 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Sports MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080S0010X
License✔ Licensed in PA · MT235940
Definition
A pediatrician who is responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also for the prevention of injury and illness. A sports medicine physician must have knowledge and experience in the promotion of wellness and the prevention of injury. Knowledge about special areas of medicine such as exercise physiology, biomechanics, nutrition, psychology, physical rehabilitation, epidemiology, physical evaluation, injuries (treatment and prevention and referral practice) and the role of exercise in promoting a healthy lifestyle are essential to the practice of sports medicine. The sports medicine physician requires special education to provide the knowledge to improve the healthcare of the individual engaged in physical exercise (sports) whether as an individual or in team participation.
Also ListedInternal Medicine · Sports MedicineTaxonomy 207RS0010X · License MT235940 (PA)
3401 CIVIC CENTER BLVD, Philadelphia, PA 19104
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Other Names 1

Other Name (5)Dr. Alec Duffy Md

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Sanford Health Plan.Insurance ›

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

Dr. John Alexander 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 ID9335493063
PECOS Enrollment IDI20220712002341
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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
56 services27 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
51 services27 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
36 services35 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
19 services19 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

M Health Fairview University Of Mn

Acute Care Hospitals · Minneapolis, MN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240080
Location2450 Riverside AvenueMinneapolis, MN 55454 · Hennepin County
Emergency services Birthing friendly

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.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality94.09
Promoting Interoperability100
Improvement Activities40
Cost84.72

Other Providers at the Same Location NPPES 20

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

AARON DORFMAN M.D.
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - CARDIOLOGY
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-4040
MS. NICOLE MARIE KOEPKE CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD, CHILDREN'S HOSPITAL OF PHILADELPHIA - EMERGENCY MED
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1944
DR. CASSANDRA ALYS LIGH MD
Surgery (Plastic and Reconstructive Surgery)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-2208
DR. PREETI SOI
Psychiatry & Neurology (Child & Adolescent Psychiatry)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-7555
ROSALIND USHER M.D.
Pediatrics (Developmental - Behavioral Pediatrics)
3401 CIVIC CENTER BLVD, DIVISION OF DEVELOPMENTAL AND BEHAVIORAL PEDIATRICS
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-6336
DR. MATTHEW DAVID SCHREIER MD
Pediatrics (Pediatric Cardiology)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
DR. TERRENCE CALDWELL JR. PHARMD
Pharmacist (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000
ALYSSA STIEFEL CRNP
Nurse Practitioner (Pediatrics)
3401 CIVIC CENTER BLVD
PHILADELPHIA, PA 19104
Philadelphia County (215) 590-1000

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 John Duffy's NPI number?

The NPI number for John Duffy is 1861997025. It was assigned to this individual provider in the NPPES registry on March 28, 2018. The provider is also known as Dr. Alec Duffy MD.

Where is John Duffy located?

John Duffy practices at 3401 Civic Center Blvd, Philadelphia, PA 19104. The listed phone number is (215) 590-1527.

What is John Duffy's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Sports Medicine, with taxonomy code 2080S0010X.

Is John Duffy enrolled in Medicare?

Yes. John 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.

What insurance does John Duffy accept?

Health plans from Medica and Sanford Health Plan list John Duffy as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is John Duffy affiliated with any hospitals?

According to CMS data, John Duffy is affiliated with M Health Fairview University Of Mn.

When was this NPI record last updated?

The NPPES record for John Duffy was last updated on July 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.