Dr. Mark Webster Duff, DO
- Medicare services, 2024
- 144
- Medicare patients, 2024
- 155
- Part D claims, 2024
- 125
- MIPS score, 2024
- 95
- Hospital affiliations
- 3
- Practice address
- 122 12th Street, Princeton, WV 24740
- Practice phone
- Call (304) 487-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Duff's professional email, personal email and mobile number
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Dr. Mark Webster Duff is a family medicine physician in Princeton, West Virginia
Dr. Duff practices at WVU Medicine Princeton Community Hospital in Princeton, West Virginia, part of West Virginia University Health System.
Dr. Duff's NPI, 1992782031, was assigned on December 29, 2005. Dr. Duff graduated from West Virginia School of Osteopathic Medicine in 1993. Dr. Duff holds West Virginia license 1446.
- NPI
- 1992782031NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931000858
- NPI enumeration date
- December 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (304) 487-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Webster Duff practices at WVU Medicine Princeton Community Hospital in Princeton, West Virginia
Dr. Duff's primary practice is WVU Medicine Princeton Community Hospital, at 122 12th Street, Princeton, WV 24740 in Mercer County. The practice phone is (304) 487-7000.
- WVU Medicine Princeton Community Hospital122 12th Street, Princeton, WV 24740 · Mercer CountyPhone(304) 487-7000
Source: Dmand AI Affiliation Data
Dr. Mark Webster Duff is affiliated with 3 sites of care and 8 medical groups
Dr. Duff's primary practice is WVU Medicine Princeton Community Hospital in Princeton, West Virginia, part of West Virginia University Health System. Dr. Duff is also affiliated with Evanston Regional Hospital. The medical group on file is Mercer Medical Group. Dmand AI also links Dr. Duff to 1 more hospital and 7 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 Dr. Mark Webster Duff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| WVU Medicine Princeton Community Hospital | Available with a free account |
| +2 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Webster Duff is one of 997 family medicine physicians in West Virginia
Family medicine is Dr. Duff's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dmand AI has Dr. Duff's licenses on file in 2 states: West Virginia and Kentucky.
Specialties and state licenses
- Family medicine, West VirginiaPrimary
- Kentucky license
Family medicine physicians near Dr. Duff
Counts of family medicine physicians 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
Dr. Mark Webster Duff billed Medicare for 144 services in 2024
CMS data shows 144 Medicare services from Dr. Duff across 3 procedure codes in 2024, for 155 Medicare patients. Medicare paid $11,732 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Duff compared with the West Virginia median for family medicine physicians, 2024
- Dr. Duff
- West Virginia median
- Medicare services
- 144vs 30853% below
- Medicare patients
- 155vs 149Close to median
- Part D claims
- 22vs 1,32198% below
Medians across 1,006 family medicine physicians in West Virginia with Dmand AI profiles that report each measure.
Dr. Duff's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Webster Duff treated 155 Medicare patients in 2024, average age 75
CMS counts 155 Medicare patients who saw Dr. Duff in 2024. The largest group is 65 to 74, with 63 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 2.25, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Duff's median patient age at 44, with 55% women.
Dr. Duff's Medicare patients by age, 2024
Dr. Duff's Medicare patients by sex, 2024
- Women9159%
- Men6441%
Chronic conditions among Dr. Duff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes53%
- Anxiety48%
- Ischemic heart disease45%
- Mood disorders43%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Webster Duff wrote 125 Medicare Part D claims in 2024
In 2024, Dr. Duff wrote 125 Medicare Part D claims for 85 patients. 90% of them were for generic drugs. CMS names the drug for 22 of them, across 2 drugs with 11 or more claims each, at $100 in total drug cost.
Dr. Duff's Part D claims by kind of drug, 2024
- Generic112 claims90%
- Brand-name and other13 claims10%
Dr. Duff's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Duff's Part D claims, 2024
- Antibiotics42%52 of 125 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark Webster Duff scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Duff for performance year 2024, reported through an alternative payment model (APM). Dr. Duff accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Duff's MIPS scores, performance year 2024
- 95of 100Final score
- 79.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark Webster Duff graduated from West Virginia School of Osteopathic Medicine
Dr. Duff graduated from West Virginia School of Osteopathic Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Webster Duff'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Dr. Mark Webster Duff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark Webster Duff's NPI number?
Dr. Mark Webster Duff's NPI number is 1992782031. It was assigned on December 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Webster Duff?
Dr. Mark Webster Duff is a family medicine physician in Princeton, West Virginia. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark Webster Duff practice?
Dr. Duff practices at 122 12th Street, Princeton, WV 24740. Dr. Duff's primary practice is WVU Medicine Princeton Community Hospital in Princeton, West Virginia, part of West Virginia University Health System. Dmand AI also links Dr. Duff to 1 hospital and 7 medical groups.
What is Dr. Mark Webster Duff's office phone number?
The practice phone on file for Dr. Duff is (304) 487-7000.
What is Dr. Mark Webster Duff's medical license number?
Dr. Duff holds West Virginia license 1446, one of the licenses on file in 2 states.
Which states has Dr. Mark Webster Duff been licensed in?
Dmand AI has state licenses on file for Dr. Duff in West Virginia and Kentucky.
Which hospitals is Dr. Mark Webster Duff affiliated with?
Dr. Duff practices at WVU Medicine Princeton Community Hospital in Princeton, West Virginia. Dr. Duff is also affiliated with Evanston Regional Hospital. Dmand AI links Dr. Duff to 1 more hospital.
What medical group is Dr. Mark Webster Duff part of?
Dr. Duff is linked to Mercer Medical Group. Dmand AI links Dr. Duff to 7 more medical groups.
Does Dr. Mark Webster Duff accept Medicare?
Yes. CMS data shows Dr. Duff billed Medicare for 144 services in 2024, and Dr. Duff accepts Medicare assignment.
What is Dr. Mark Webster Duff's MIPS score?
Dr. Duff's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Mark Webster Duff see?
CMS counts 155 Medicare patients who saw Dr. Duff in 2024, with an average age of 75.
What services does Dr. Mark Webster Duff bill to Medicare?
In 2024, Dr. Duff's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and emergency department visit (99283).
Where did Dr. Mark Webster Duff go to medical school?
Dr. Duff graduated from West Virginia School of Osteopathic Medicine in 1993.
What drugs does Dr. Mark Webster Duff prescribe most?
In 2024 Medicare Part D data, Dr. Duff's most prescribed drugs by claims were Cephalexin and Levofloxacin.
How long has Dr. Mark Webster Duff been practicing?
Dr. Duff graduated from medical school in 1993, 33 years ago.
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