Michael Duffy, DO
NPI 1619380920 · Family Medicine Physician · Aliquippa, PA
Michael Duffy, DO is a Family Medicine Physician provider in Aliquippa, PA (NPI 1619380920).
Provider details
- NPI number
- 1619380920
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- OS018190 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 101 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 360 | 98 |
| Lisinopril | 305 | 83 |
| Omeprazole | 252 | 61 |
| Metformin Hcl | 223 | 69 |
| Amlodipine Besylate | 210 | 58 |
| Rosuvastatin Calcium | 206 | 61 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-04
- Last updated
- 2022-10-10
- Certified
- 2022-10-10
Frequently asked questions
- What is Michael Duffy's NPI number?
- Michael Duffy's National Provider Identifier (NPI) is 1619380920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Duffy's specialty?
- Michael Duffy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Duffy located?
- Michael Duffy's practice location on file with NPPES is 99 Autumn St, Aliquippa, PA 15001-1301.
- What is Michael Duffy's phone number?
- The practice phone number listed in the NPPES registry for Michael Duffy is (724) 375-5754.
- Is Michael Duffy's NPI active?
- Yes — Michael Duffy's NPI (1619380920) is active in the NPPES registry as of the last update on 2022-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.