Eric A. Duffield, PA
- Medicare patients, 2024
- 163
- Part D claims, 2024
- 5,570
- Hospital affiliations
- 2
- Industry payments
- $424
- Medical groups
- 4
- Practice address
- 826 West King Street, Owosso, MI 48867
- Practice phone
- Call (989) 723-5211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Eric Duffield's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Eric A. Duffield is a physician assistant in Owosso, Michigan
Eric Duffield practices at Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare.
Eric Duffield's NPI, 1245427004, was assigned on September 26, 2007. Eric Duffield holds Michigan license 5601003938.
- NPI
- 1245427004NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345339594
- NPI enumeration date
- September 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (989) 723-5211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Eric A. Duffield practices at Memorial Healthcare in Owosso, Michigan
Eric Duffield's primary practice is Memorial Healthcare, at 826 West King Street, Owosso, MI 48867 in Shiawassee County. The practice phone is (989) 723-5211.
- Memorial Healthcare826 West King Street, Owosso, MI 48867 · Shiawassee CountyPhone(989) 723-5211
Source: Dmand AI Affiliation Data
Eric A. Duffield is affiliated with 2 sites of care and 4 medical groups
Eric Duffield's primary practice is Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare. Eric Duffield is also affiliated with University of Michigan Health-Sparrow Lansing. The medical group on file is University of Michigan Health-Sparrow. Dmand AI also links Eric Duffield to 3 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Eric A. Duffield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Eric Duffield practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Healthcare | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Memorial Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Eric A. Duffield is one of 5,857 physician assistants in Michigan
Physician assistant is Eric Duffield's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Eric Duffield is licensed in Michigan.
Specialties and state licenses
- Physician assistant, MichiganPrimary
Physician assistants near Eric Duffield
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Eric A. Duffield treated 163 Medicare patients in 2024, average age 71
CMS counts 163 Medicare patients who saw Eric Duffield in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 25% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Eric Duffield's median patient age at 65, with 48% women.
Eric Duffield's Medicare patients by age, 2024
Eric Duffield's Medicare patients by sex, 2024
- Women9357%
- Men7043%
Chronic conditions among Eric Duffield's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis43%
- COPD34%
- Diabetes30%
- Anxiety26%
- Ischemic heart disease26%
- Mood disorders26%
Share of Medicare patients with each condition. A patient can have several.
Eric Duffield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Eric A. Duffield wrote 5,570 Medicare Part D claims in 2024
In 2024, Eric Duffield wrote 5,570 Medicare Part D claims for 440 patients. 85% of them were for generic drugs.
Eric Duffield's Part D claims by kind of drug, 2024
- Generic4,709 claims85%
- Brand-name834 claims15%
- Other27 claims0%
Drug classes CMS tracks in Eric Duffield's Part D claims, 2024
- Opioids1%34 of 5,570 claims
- Antibiotics2%134 of 5,570 claims
- Antipsychotics, patients 65 and over0%19 of 5,570 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Eric A. Duffield takes part in Medicare
Eric Duffield accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Eric A. Duffield received $424 in industry payments in 2025
CMS Open Payments shows 22 general payments to Eric Duffield from 12 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $134.
Companies that paid Eric Duffield the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Eric A. Duffield's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Eric A. Duffield
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Eric A. Duffield's NPI number?
Eric A. Duffield's NPI number is 1245427004. It was assigned on September 26, 2007, and it is active in the NPI Registry.
What does Eric A. Duffield specialize in?
Eric A. Duffield is a physician assistant in Owosso, Michigan. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Eric A. Duffield practice?
Eric Duffield practices at 826 West King Street, Owosso, MI 48867. Eric Duffield's primary practice is Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare. Dmand AI also links Eric Duffield to 3 medical groups.
What is Eric A. Duffield's office phone number?
The practice phone on file for Eric Duffield is (989) 723-5211.
What is Eric A. Duffield's medical license number?
Eric Duffield holds Michigan license 5601003938.
Which hospitals is Eric A. Duffield affiliated with?
Eric Duffield practices at Memorial Healthcare in Owosso, Michigan. Eric Duffield is also affiliated with University of Michigan Health-Sparrow Lansing.
What medical group is Eric A. Duffield part of?
Eric Duffield is linked to University of Michigan Health-Sparrow. Dmand AI links Eric Duffield to 3 more medical groups.
Does Eric A. Duffield accept Medicare?
Yes. CMS lists Eric Duffield as accepting Medicare assignment.
How many Medicare patients does Eric A. Duffield see?
CMS counts 163 Medicare patients who saw Eric Duffield in 2024, with an average age of 71.
Has Eric A. Duffield received payments from drug or device companies?
CMS Open Payments shows $424 in general payments to Eric Duffield from 12 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Eric A. Duffield been practicing?
Eric Duffield graduated from medical school in 2002, 24 years ago.
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