Dr. Mary H. Duff, MD
- Medicare services, 2024
- 78
- Medicare patients, 2024
- 88
- Part D claims, 2024
- 147
- MIPS score, 2024
- 82
- Hospital affiliations
- 1
- Practice address
- 1000 E Primrose St, Springfield, MO 65807
- Practice phone
- Call (417) 875-3332
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ferrell - Duncan Clinic
Springfield, Missouri
Find Dr. Duff'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.
Dr. Mary H. Duff is an OB-GYN in Springfield, Missouri
Dr. Duff practices at Ferrell - Duncan Clinic in Springfield, Missouri.
Dr. Duff's NPI, 1952410862, was assigned on August 30, 2006. Dr. Duff graduated from University of Kansas School of Med (KC/Wich/Sal) in 1998. Dr. Duff holds Kansas license 04-29559.
- NPI
- 1952410862NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446328108
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (417) 875-3332
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary H. Duff practices at Ferrell - Duncan Clinic in Springfield, Missouri
Dr. Duff's primary practice is Ferrell - Duncan Clinic, at 1000 E Primrose St, Springfield, MO 65807 in Greene County. The practice phone is (417) 875-3332.
- Ferrell - Duncan Clinic1000 E Primrose St, Springfield, MO 65807 · Greene CountyPhone(417) 875-3332
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary H. Duff is affiliated with 4 sites of care and 2 medical groups
Dr. Duff's primary practice is Ferrell - Duncan Clinic in Springfield, Missouri. Dr. Duff is also affiliated with Cox Medical Center South. The medical group on file is Ferrell-Duncan Clinic. Dmand AI also links Dr. Duff to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary H. 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 |
|---|---|
| Ferrell - Duncan Clinic | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary H. Duff is one of 712 OB-GYNs in Missouri
Obstetrics and gynecology is Dr. Duff's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Duff is licensed in Kansas.
Specialties and state licenses
- Obstetrics and gynecology, KansasPrimary
OB-GYNs near Dr. Duff
Counts of OB-GYNs 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. Mary H. Duff billed Medicare for 78 services in 2024
CMS data shows 78 Medicare services from Dr. Duff across 3 procedure codes in 2024, for 88 Medicare patients. Medicare paid $3,400 for them. Every service was in an office.
Dr. Duff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 512024: 6222%
- Other services
- 2023: 122024: 1633%
Dr. Duff compared with the Missouri median for OB-GYNs, 2024
- Dr. Duff
- Missouri median
- Medicare services
- 78vs 5347% above
- Medicare patients
- 88vs 4787% above
- Part D claims
- 65vs 4544% above
Medians across 650 OB-GYNs in Missouri 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duff and other OB-GYNs in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary H. Duff treated 88 Medicare patients in 2024, average age 70
CMS counts 88 Medicare patients who saw Dr. Duff in 2024. The largest group is 65 to 74, with 54 patients. 68% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 0.82, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Duff's median patient age at 40, with 99% women.
Dr. Duff's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Duff's Medicare patients, 2024
- High cholesterol68%
- High blood pressure63%
- Arthritis47%
- Osteoporosis26%
- Anxiety25%
- Mood disorders22%
- Depression18%
- Diabetes18%
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 40
Patient panel by sex, all payers
- Women99%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary H. Duff wrote 147 Medicare Part D claims in 2024
In 2024, Dr. Duff wrote 147 Medicare Part D claims for 56 patients. 91% of them were for generic drugs. CMS names the drug for 65 of them, across 1 drug with 11 or more claims each, at $3,546 in total drug cost. In 2023, CMS named 42 claims across 2 drugs.
Dr. Duff's Part D claims by kind of drug, 2024
- Generic134 claims91%
- Brand-name13 claims9%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 422024: 6555%
Drugs named by CMS: 1 in 2024, 2 in 2023.
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. Mary H. Duff scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Duff for performance year 2024, reported as part of a group. 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
- 82of 100Final score
- 64.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
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. Mary H. Duff received $126 in industry payments from 2016 to 2024
CMS Open Payments shows 3 general payments to Dr. Duff from 3 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Fresenius Kabi USA, LLC paid the most, $83.
General payments to Dr. Duff by program year, 2016 to 2024
Companies that paid Dr. Duff the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary H. Duff graduated from University of Kansas School of Med (KC/Wich/Sal)
Dr. Duff graduated from University of Kansas School of Med (KC/Wich/Sal) in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary H. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Industry payments | Open Payments (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. Mary H. 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. Mary H. Duff's NPI number?
Dr. Mary H. Duff's NPI number is 1952410862. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary H. Duff?
Dr. Mary H. Duff is an OB-GYN in Springfield, Missouri. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Mary H. Duff practice?
Dr. Duff practices at 1000 E Primrose St, Springfield, MO 65807. Dr. Duff's primary practice is Ferrell - Duncan Clinic in Springfield, Missouri. Dmand AI also links Dr. Duff to 2 group practices and clinics and 1 medical group.
What is Dr. Mary H. Duff's office phone number?
The practice phone on file for Dr. Duff is (417) 875-3332.
What is Dr. Mary H. Duff's medical license number?
Dr. Duff holds Kansas license 04-29559.
Which hospitals is Dr. Mary H. Duff affiliated with?
Dr. Duff is affiliated with Cox Medical Center South.
What medical group is Dr. Mary H. Duff part of?
Dr. Duff is linked to Ferrell-Duncan Clinic. Dmand AI links Dr. Duff to 1 more medical group.
Does Dr. Mary H. Duff accept Medicare?
Yes. CMS data shows Dr. Duff billed Medicare for 78 services in 2024, and Dr. Duff accepts Medicare assignment.
What is Dr. Mary H. Duff's MIPS score?
Dr. Duff's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mary H. Duff see?
CMS counts 88 Medicare patients who saw Dr. Duff in 2024, with an average age of 70.
Show 5 more questionsShow fewer questions
What services does Dr. Mary H. Duff bill to Medicare?
In 2024, Dr. Duff's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99212) and medicare service (G0101).
Where did Dr. Mary H. Duff go to medical school?
Dr. Duff graduated from University of Kansas School of Med (KC/Wich/Sal) in 1998.
What drugs does Dr. Mary H. Duff prescribe most?
In 2024 Medicare Part D data, Dr. Duff's most prescribed drugs by claims were Estradiol.
Has Dr. Mary H. Duff received payments from drug or device companies?
CMS Open Payments shows $126 in general payments to Dr. Duff from 3 companies from 2016 to 2024. The largest total came from Fresenius Kabi USA, LLC.
How long has Dr. Mary H. Duff been practicing?
Dr. Duff graduated from medical school in 1998, 28 years ago.
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