Dr. Mary J. Oyen, MD
- Medicare services, 2021
- 120
- Part D claims, 2024
- 1,237
- MIPS score, 2024
- 80
- Hospital affiliations
- 1
- Industry payments
- $3,844
- Practice address
- 1400 East Side Rd, Platteville, WI 53818
- Practice phone
- Call (608) 348-2331
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oyen'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 J. Oyen is an ophthalmologist in Platteville, Wisconsin
Dr. Oyen practices at Southwest Health in Platteville, Wisconsin, part of Southwest Health Center.
Dr. Oyen's NPI, 1770536161, was assigned on May 18, 2006. Dr. Oyen graduated from University of Wisconsin School of Medicine in 1993. Dr. Oyen holds Wisconsin license 35622-020.
- NPI
- 1770536161NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749175305
- NPI enumeration date
- May 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 348-2331
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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. Mary J. Oyen practices at Southwest Health in Platteville, Wisconsin
Dr. Oyen's primary practice is Southwest Health, at 1400 East Side Rd, Platteville, WI 53818 in Grant County. The practice phone is (608) 348-2331.
- Southwest Health1400 East Side Rd, Platteville, WI 53818 · Grant CountyPhone(608) 348-2331
Source: Dmand AI Affiliation Data
Dr. Mary J. Oyen is affiliated with 2 sites of care and 1 medical group
Dr. Oyen's primary practice is Southwest Health in Platteville, Wisconsin, part of Southwest Health Center. The medical group on file is Southwest Health. Dmand AI also links Dr. Oyen to 1 more group practice or clinic, named with a free account. Dr. Oyen's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary J. Oyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oyen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southwest Health | Available with a free account |
| +1 more affiliated site | 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 Southwest Health Center and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mary J. Oyen is one of 328 ophthalmologists in Wisconsin
Ophthalmology is Dr. Oyen's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Oyen is licensed in Wisconsin.
Specialties and state licenses
- Ophthalmology, WisconsinPrimary
Ophthalmologists near Dr. Oyen
Counts of ophthalmologists 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 J. Oyen billed Medicare for 120 services in 2021
CMS data shows 120 Medicare services from Dr. Oyen across 4 procedure codes in 2021. Medicare paid $7,023 for them. Every service was in an office.
Dr. Oyen's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 872021: 915%
- Office and hospital visits
- 2020: 192021: 2953%
Dr. Oyen compared with the Wisconsin median for ophthalmologists, 2021
- Dr. Oyen
- Wisconsin median
- Medicare services
- 120vs 1,16290% below
- Part D claims
- 1,127vs 61583% above
Medians across 346 ophthalmologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Oyen's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Oyen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oyen and other ophthalmologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary J. Oyen's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Oyen's median patient age at 74, with 64% women.
Dr. Oyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women64%
- Men36%
Source: Dmand AI Patient Panel Data
Dr. Mary J. Oyen wrote 1,237 Medicare Part D claims in 2024
In 2024, Dr. Oyen wrote 1,237 Medicare Part D claims for 312 patients. 68% of them were for generic drugs. CMS names the drug for 1,127 of them, across 14 drugs with 11 or more claims each, at $67,677 in total drug cost. In 2023, CMS named 830 claims across 13 drugs.
Dr. Oyen's Part D claims by kind of drug, 2024
- Generic840 claims68%
- Brand-name397 claims32%
Dr. Oyen'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. Oyen's Part D claims, 2024
- Antibiotics1%11 of 1,237 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8302024: 1,12736%
Drugs named by CMS: 14 in 2024, 13 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 J. Oyen scored 80 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 80 out of 100 for Dr. Oyen for performance year 2024, reported as part of a group. Dr. Oyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Oyen's MIPS scores, performance year 2024
- 80of 100Final score
- 92.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 42of 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 J. Oyen received $3,844 in industry payments from 2016 to 2025
CMS Open Payments shows 126 general payments to Dr. Oyen from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 62% of the total. Allergan Inc. paid the most, $1,732.
General payments to Dr. Oyen by program year, 2016 to 2025
General payments to Dr. Oyen by kind, 2016 to 2025
- Food and beverage$2,37262%
- Travel and lodging$1,45238%
- Gifts$191%
Companies that paid Dr. Oyen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary J. Oyen graduated from University of Wisconsin School of Medicine
Dr. Oyen graduated from University of Wisconsin School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary J. Oyen'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 Data |
| 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 J. Oyen
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 J. Oyen's NPI number?
Dr. Mary J. Oyen's NPI number is 1770536161. It was assigned on May 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary J. Oyen?
Dr. Mary J. Oyen is an ophthalmologist in Platteville, Wisconsin. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Mary J. Oyen practice?
Dr. Oyen practices at 1400 East Side Rd, Platteville, WI 53818. Dr. Oyen's primary practice is Southwest Health in Platteville, Wisconsin, part of Southwest Health Center. Dmand AI also links Dr. Oyen to 1 group practice or clinic.
What is Dr. Mary J. Oyen's office phone number?
The practice phone on file for Dr. Oyen is (608) 348-2331.
What is Dr. Mary J. Oyen's medical license number?
Dr. Oyen holds Wisconsin license 35622-020.
Which hospitals is Dr. Mary J. Oyen affiliated with?
Dr. Oyen practices at Southwest Health in Platteville, Wisconsin.
What medical group is Dr. Mary J. Oyen part of?
Dr. Oyen is linked to Southwest Health.
Does Dr. Mary J. Oyen accept Medicare?
Yes. CMS data shows Dr. Oyen billed Medicare for 120 services in 2021, and Dr. Oyen accepts Medicare assignment.
What is Dr. Mary J. Oyen's MIPS score?
Dr. Oyen's MIPS final score for performance year 2024 is 80 out of 100, reported as part of a group.
What services does Dr. Mary J. Oyen bill to Medicare?
In 2021, Dr. Oyen's most billed Medicare services were eye exam or test (92134), office visit, established patient (99214) and eye exam or test (92014).
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Where did Dr. Mary J. Oyen go to medical school?
Dr. Oyen graduated from University of Wisconsin School of Medicine in 1993.
What drugs does Dr. Mary J. Oyen prescribe most?
In 2024 Medicare Part D data, Dr. Oyen's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Prednisolone Acetate.
Has Dr. Mary J. Oyen received payments from drug or device companies?
CMS Open Payments shows $3,844 in general payments to Dr. Oyen from 36 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. Mary J. Oyen been practicing?
Dr. Oyen graduated from medical school in 1993, 33 years ago.
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