Dr. Mark A. Oyer, MD
- Medicare services, 2024
- 3,693
- Medicare patients, 2024
- 848
- Part D claims, 2024
- 457
- Publications
- 6
- MIPS score, 2024
- 84
- Practice address
- 324 Roxbury Rd, Rockford, IL 61107
- Practice phone
- Call (815) 398-9491
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthomidwest
Rockford, Illinois
Find Dr. Oyer'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. Mark A. Oyer is an orthopedic surgeon in Rockford, Illinois
Dr. Oyer practices at Orthomidwest in Rockford, Illinois.
Dr. Oyer's NPI, 1679968812, was assigned on April 4, 2015. Dr. Oyer holds Illinois license 036-154989.
- NPI
- 1679968812NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416252267
- NPI enumeration date
- April 4, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (815) 398-9491
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark A. Oyer practices at Orthomidwest in Rockford, Illinois
Dr. Oyer's primary practice is Orthomidwest, at 324 Roxbury Rd, Rockford, IL 61107 in Winnebago County. The practice phone is (815) 398-9491.
- Orthomidwest324 Roxbury Rd, Rockford, IL 61107 · Winnebago CountyPhone(815) 398-9491
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark A. Oyer is affiliated with 9 sites of care and 2 medical groups
Dr. Oyer's primary practice is Orthomidwest in Rockford, Illinois. Dr. Oyer is also affiliated with UW Health SwedishAmerican Hospital. The medical group on file is OrthoIllinois. Dmand AI also links Dr. Oyer to 4 more hospitals, 2 group practices and clinics, 1 home health agency 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. Mark A. Oyer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oyer practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthomidwest | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark A. Oyer is one of 849 orthopedic surgeons in Illinois
Orthopaedic surgery is Dr. Oyer's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Oyer's licenses on file in 2 states: Illinois and Wisconsin.
Specialties and state licenses
- Orthopaedic surgery, IllinoisPrimary
- Wisconsin license
Orthopedic surgeons near Dr. Oyer
Counts of orthopedic surgeons 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 A. Oyer billed Medicare for 3,693 services in 2024
CMS data shows 3,693 Medicare services from Dr. Oyer across 20 procedure codes in 2024, for 848 Medicare patients. Medicare paid $346,259 for them.
Dr. Oyer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,3942024: 1,5048%
- Drugs given in the office
- 2023: 11,3542024: 87192%
- Office and hospital visits
- 2023: 9252024: 69525%
- Surgery
- 2023: 9652024: 55642%
- Other services
- 2023: 612024: 6710%
Where Dr. Oyer's Medicare services took place, 2024
- In an office3,30990%
- In a facility38410%
Dr. Oyer compared with the Illinois median for orthopedic surgeons, 2024
- Dr. Oyer
- Illinois median
- Medicare services
- 3,693vs 1,2503.0 times
- Medicare patients
- 848vs 2962.9 times
- Part D claims
- 385vs 1203.2 times
Medians across 741 orthopedic surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Oyer'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.
Need commercial claims for Dr. Oyer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oyer and other orthopedic surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark A. Oyer treated 848 Medicare patients in 2024, average age 74
CMS counts 848 Medicare patients who saw Dr. Oyer in 2024. The largest group is 65 to 74, with 424 patients. 75% of them have arthritis, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oyer's median patient age at 71, with 61% women.
Dr. Oyer's Medicare patients by age, 2024
Dr. Oyer's Medicare patients by sex, 2024
- Women53863%
- Men31037%
Chronic conditions among Dr. Oyer's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure73%
- Diabetes27%
- Chronic kidney disease22%
- Mood disorders22%
- Anxiety21%
- Ischemic heart disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oyer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark A. Oyer wrote 457 Medicare Part D claims in 2024
In 2024, Dr. Oyer wrote 457 Medicare Part D claims for 243 patients. 99% of them were for generic drugs. CMS names the drug for 385 of them, across 8 drugs with 11 or more claims each, at $3,071 in total drug cost. In 2023, CMS named 463 claims across 8 drugs.
Dr. Oyer's Part D claims by kind of drug, 2024
- Generic452 claims99%
- Brand-name and other5 claims1%
Dr. Oyer'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. Oyer's Part D claims, 2024
- Opioids39%177 of 457 claims
- Antibiotics9%40 of 457 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: 4632024: 38517%
Drugs named by CMS: 8 in 2024, 8 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. Mark A. Oyer scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Oyer for performance year 2024, reported as part of a group. Dr. Oyer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oyer as offering telehealth. CMS counts 104 procedures of hip replacement by Dr. Oyer, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Oyer's MIPS scores, performance year 2024
- 84of 100Final score
- 68.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Oyer ranks in Medicare procedure volume
- Knee replacement
- 95th percentile116 procedures
- Hip replacement
- 98th percentile104 procedures
- Lower limb (leg) arthroscopy (minimally invasive joint repair)
- 83rd percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark A. Oyer has 6 publications on record
Dmand AI links 6 papers to Dr. Oyer, published from 2017 to 2021. 2020 was the busiest year, with 2. The most frequent topics are Postoperative Complications, Postoperative Period and Arthroplasty, Replacement, Hip. Dr. Oyer has published most often in J Arthroplasty. Dr. Oyer's most frequent co-authors are David W. Manning, MD, Kevin D. Hardt, MD and Haley Elizabeth Smith, MD.
Dr. Oyer's papers by year, 2017 to 2021
Topics Dr. Oyer writes about most
- Postoperative Complications
- Postoperative Period
- Arthroplasty, Replacement, Hip
- Elective Surgical Procedures
- Length of Stay
Dr. Oyer's most frequent co-authors
- David W. Manning, MD4 shared papers
- Kevin D. Hardt, MD2 shared papers
- Haley Elizabeth Smith, MD2 shared papers
Recent publications by Dr. Oyer
J Arthroplasty
J Arthroplasty
J Arthroplasty
See who Dr. Oyer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oyer works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark A. Oyer received $101,906 in industry payments from 2016 to 2025
CMS Open Payments shows 173 general payments to Dr. Oyer from 18 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 82% of the total. Medical Device Business Services, Inc. paid the most, $92,789.
General payments to Dr. Oyer by program year, 2016 to 2025
General payments to Dr. Oyer by kind, 2016 to 2025
- Consulting fees$84,06382%
- Food and beverage$8,9519%
- Travel and lodging$8,7969%
- Education$970%
Companies that paid Dr. Oyer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark A. Oyer's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark A. Oyer
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 A. Oyer's NPI number?
Dr. Mark A. Oyer's NPI number is 1679968812. It was assigned on April 4, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark A. Oyer?
Dr. Mark A. Oyer is an orthopedic surgeon in Rockford, Illinois. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Mark A. Oyer practice?
Dr. Oyer practices at 324 Roxbury Rd, Rockford, IL 61107. Dr. Oyer's primary practice is Orthomidwest in Rockford, Illinois. Dmand AI also links Dr. Oyer to 4 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Mark A. Oyer's office phone number?
The practice phone on file for Dr. Oyer is (815) 398-9491.
What is Dr. Mark A. Oyer's medical license number?
Dr. Oyer holds Illinois license 036-154989, one of the licenses on file in 2 states.
Which states has Dr. Mark A. Oyer been licensed in?
Dmand AI has state licenses on file for Dr. Oyer in Illinois and Wisconsin.
Which hospitals is Dr. Mark A. Oyer affiliated with?
Dr. Oyer is affiliated with UW Health SwedishAmerican Hospital. Dmand AI links Dr. Oyer to 4 more hospitals.
What medical group is Dr. Mark A. Oyer part of?
Dr. Oyer is linked to OrthoIllinois. Dmand AI links Dr. Oyer to 1 more medical group.
Does Dr. Mark A. Oyer accept Medicare?
Yes. CMS data shows Dr. Oyer billed Medicare for 3,693 services in 2024, and Dr. Oyer accepts Medicare assignment.
Does Dr. Mark A. Oyer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oyer as offering telehealth services.
Show 8 more questionsShow fewer questions
What is Dr. Mark A. Oyer's MIPS score?
Dr. Oyer's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark A. Oyer see?
CMS counts 848 Medicare patients who saw Dr. Oyer in 2024, with an average age of 74.
What services does Dr. Mark A. Oyer bill to Medicare?
In 2024, Dr. Oyer's most billed Medicare services were injected or infused drug (J3301), diagnostic imaging (73560) and diagnostic imaging (73502).
What drugs does Dr. Mark A. Oyer prescribe most?
In 2024 Medicare Part D data, Dr. Oyer's most prescribed drugs by claims were Meloxicam, Oxycodone HCl and Hydrocodone-Acetaminophen.
Has Dr. Mark A. Oyer received payments from drug or device companies?
CMS Open Payments shows $101,906 in general payments to Dr. Oyer from 18 companies from 2016 to 2025. The largest total came from Medical Device Business Services, Inc.
How long has Dr. Mark A. Oyer been practicing?
Dr. Oyer graduated from medical school in 2015, 11 years ago.
Does Dr. Mark A. Oyer do research?
Dmand AI links 6 publications to Dr. Oyer, published from 2017 to 2021.
Who does Dr. Mark A. Oyer publish with?
Dr. Oyer's most frequent co-authors are David W. Manning, MD (4 shared papers), Kevin D. Hardt, MD (2 shared papers) and Haley Elizabeth Smith, MD (2 shared papers).
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