Joseph Duffy, M.D.
NPI 1033117171 · Family Medicine Physician · Wayne, NJ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Duffy, M.D. is a Family Medicine Physician provider in Wayne, NJ (NPI 1033117171).
Provider details
- NPI number
- 1033117171
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25MA05656700 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
397 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 144 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 40 | $135 |
| Administration of Influenza Virus VaccineG0008 | 32 | $36 |
Typical Medicare-allowed amounts for these services range $9–$135 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 119 | 37 |
| Levothyroxine Sodium | 87 | 27 |
| Metoprolol Succinate | 83 | 21 |
| Amlodipine Besylate | 69 | 24 |
| Metformin Hclbrand: Metformin Hcl Er | 61 | 16 |
| Alprazolam | 60 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-12
- Last updated
- 2012-05-21
Frequently asked questions
- What is Joseph Duffy's NPI number?
- Joseph Duffy's National Provider Identifier (NPI) is 1033117171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Duffy's specialty?
- Joseph Duffy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Duffy located?
- Joseph Duffy's practice location on file with NPPES is 220 Hamburg Tpke, Wayne, NJ 07470-2110.
- What is Joseph Duffy's phone number?
- The practice phone number listed in the NPPES registry for Joseph Duffy is (973) 942-0200.
- Does Joseph Duffy accept Medicare?
- Joseph Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Duffy's NPI active?
- Yes — Joseph Duffy's NPI (1033117171) is active in the NPPES registry as of the last update on 2012-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.