Dr. Matthew C. Riesen, MD
- Medicare services, 2024
- 2,276
- Medicare patients, 2024
- 392
- Part D claims, 2024
- 5,422
- Hospital affiliations
- 5
- Industry payments
- $11,183
- Practice address
- 1132 E Hager St, Saint Marys, OH 45885
- Practice phone
- Call (419) 394-5851
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St Marys Medical Group Inc.
Saint Marys, Ohio
Find Dr. Riesen'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. Matthew C. Riesen is a general practice physician in Saint Marys, Ohio
Dr. Riesen practices at St Marys Medical Group Inc. in Saint Marys, Ohio.
Dr. Riesen's NPI, 1497947998, was assigned on August 17, 2007. Dr. Riesen graduated from Toledo Medical College in 2007. Dr. Riesen holds Ohio license 35. 099958.
- NPI
- 1497947998NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810132685
- NPI enumeration date
- August 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 394-5851
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew C. Riesen practices at St Marys Medical Group Inc. in Saint Marys, Ohio
Dr. Riesen's primary practice is St Marys Medical Group Inc., at 1132 E Hager St, Saint Marys, OH 45885 in Auglaize County. The practice phone is (419) 394-5851.
- St Marys Medical Group Inc.1132 E Hager St, Saint Marys, OH 45885 · Auglaize CountyPhone(419) 394-5851
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Matthew C. Riesen is affiliated with 10 sites of care and 2 medical groups
Dr. Riesen's primary practice is St Marys Medical Group Inc. in Saint Marys, Ohio. Dr. Riesen is also affiliated with Grand Lake Health System. The medical group on file is Walk In Urgent Care. Dmand AI also links Dr. Riesen to 4 more hospitals, 2 home health agencies, 1 hospice, 1 skilled nursing facility and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew C. Riesen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riesen practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St Marys Medical Group Inc. | Available with a free account |
| +9 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew C. Riesen is one of 193 general practice physicians in Ohio
General practice is Dr. Riesen's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Riesen is licensed in Ohio.
Specialties and state licenses
- General practice, OhioPrimary
General practice physicians near Dr. Riesen
Counts of general practice 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. Matthew C. Riesen billed Medicare for 2,276 services in 2024
CMS data shows 2,276 Medicare services from Dr. Riesen across 6 procedure codes in 2024, for 392 Medicare patients. Medicare paid $47,359 for them. Every service was in an office.
Dr. Riesen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1462024: 1,361832%
- Office and hospital visits
- 2023: 8572024: 8894%
- Other services
- 2023: 552024: 2653%
- Tests and treatments
- 2023: 142024: 0100%
Dr. Riesen compared with the Ohio median for general practice physicians, 2024
- Dr. Riesen
- Ohio median
- Medicare services
- 2,276vs 16613.7 times
- Medicare patients
- 392vs 1243.2 times
- Part D claims
- 4,806vs 11840.7 times
Medians across 172 general practice physicians in Ohio with Dmand AI profiles that report each measure.
Dr. Riesen'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. Riesen and other general practice physicians in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew C. Riesen treated 392 Medicare patients in 2024, average age 73
CMS counts 392 Medicare patients who saw Dr. Riesen in 2024. The largest group is 65 to 74, with 228 patients. 75% of them have high blood pressure, and 46% have high cholesterol. 7% are also on Medicaid. Their average risk score is 0.82, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Riesen's median patient age at 65, with 46% women.
Dr. Riesen's Medicare patients by age, 2024
Dr. Riesen's Medicare patients by sex, 2024
- Women18146%
- Men21154%
Chronic conditions among Dr. Riesen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol46%
- Arthritis35%
- Diabetes29%
- Ischemic heart disease23%
- Anxiety19%
- Atrial fibrillation14%
- Chronic kidney disease14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Riesen'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
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Matthew C. Riesen wrote 5,422 Medicare Part D claims in 2024
In 2024, Dr. Riesen wrote 5,422 Medicare Part D claims for 527 patients. 88% of them were for generic drugs. CMS names the drug for 4,806 of them, across 93 drugs with 11 or more claims each, at $276,868 in total drug cost. In 2023, CMS named 4,454 claims across 88 drugs.
Dr. Riesen's Part D claims by kind of drug, 2024
- Generic4,793 claims88%
- Brand-name594 claims11%
- Other35 claims1%
Dr. Riesen'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. Riesen's Part D claims, 2024
- Opioids0%19 of 5,422 claims
- Antibiotics2%131 of 5,422 claims
- Antipsychotics, patients 65 and over1%35 of 5,422 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: 4,4542024: 4,8068%
Drugs named by CMS: 93 in 2024, 88 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
How Dr. Matthew C. Riesen takes part in Medicare
Dr. Riesen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Matthew C. Riesen received $11,183 in industry payments from 2016 to 2025
CMS Open Payments shows 997 general payments to Dr. Riesen from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Novo Nordisk Inc paid the most, $3,105.
General payments to Dr. Riesen by program year, 2016 to 2025
General payments to Dr. Riesen by kind, 2016 to 2025
- Food and beverage$11,07899%
- Education$1051%
Companies that paid Dr. Riesen 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. Matthew C. Riesen graduated from Toledo Medical College
Dr. Riesen graduated from Toledo Medical College in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Matthew C. Riesen'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 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)Doctors and Clinicians Utilization Data (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. Matthew C. Riesen
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. Matthew C. Riesen's NPI number?
Dr. Matthew C. Riesen's NPI number is 1497947998. It was assigned on August 17, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew C. Riesen?
Dr. Matthew C. Riesen is a general practice physician in Saint Marys, Ohio. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Matthew C. Riesen practice?
Dr. Riesen practices at 1132 E Hager St, Saint Marys, OH 45885. Dr. Riesen's primary practice is St Marys Medical Group Inc. in Saint Marys, Ohio. Dmand AI also links Dr. Riesen to 4 hospitals, 2 home health agencies, 1 hospice, 1 skilled nursing facility and 1 medical group.
What is Dr. Matthew C. Riesen's office phone number?
The practice phone on file for Dr. Riesen is (419) 394-5851.
What is Dr. Matthew C. Riesen's medical license number?
Dr. Riesen holds Ohio license 35. 099958.
Which hospitals is Dr. Matthew C. Riesen affiliated with?
Dr. Riesen is affiliated with Grand Lake Health System. Dmand AI links Dr. Riesen to 4 more hospitals.
What medical group is Dr. Matthew C. Riesen part of?
Dr. Riesen is linked to Walk In Urgent Care. Dmand AI links Dr. Riesen to 1 more medical group.
Does Dr. Matthew C. Riesen accept Medicare?
Yes. CMS data shows Dr. Riesen billed Medicare for 2,276 services in 2024, and Dr. Riesen accepts Medicare assignment.
How many Medicare patients does Dr. Matthew C. Riesen see?
CMS counts 392 Medicare patients who saw Dr. Riesen in 2024, with an average age of 73.
What services does Dr. Matthew C. Riesen bill to Medicare?
In 2024, Dr. Riesen's most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99213) and injected or infused drug (J1100).
Show 4 more questionsShow fewer questions
Where did Dr. Matthew C. Riesen go to medical school?
Dr. Riesen graduated from Toledo Medical College in 2007.
What drugs does Dr. Matthew C. Riesen prescribe most?
In 2024 Medicare Part D data, Dr. Riesen's most prescribed drugs by claims were Amlodipine Besylate, Lisinopril-Hydrochlorothiazide and Levothyroxine Sodium.
Has Dr. Matthew C. Riesen received payments from drug or device companies?
CMS Open Payments shows $11,183 in general payments to Dr. Riesen from 31 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Matthew C. Riesen been practicing?
Dr. Riesen graduated from medical school in 2007, 19 years ago.
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