Dr. Mark Allen Denny, MD
- Medicare services, 2024
- 151
- Medicare patients, 2024
- 140
- Part D claims, 2024
- 185
- Hospital affiliations
- 1
- Industry payments
- $263
- Practice address
- 335 Glessner Avenue, Mansfield, OH 44903
- Practice phone
- Call (419) 526-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Denny'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 Allen Denny is an emergency medicine physician in Mansfield, Ohio
Dr. Denny practices at OhioHealth Mansfield Hospital in Mansfield, Ohio, part of OhioHealth.
Dr. Denny's NPI, 1801863626, was assigned on March 1, 2006. Dr. Denny graduated from Ohio State University College of Medicine in 1999. Dr. Denny holds Ohio license 35079233.
- NPI
- 1801863626NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072546456
- NPI enumeration date
- March 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 526-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Allen Denny practices at OhioHealth Mansfield Hospital in Mansfield, Ohio
Dr. Denny's primary practice is OhioHealth Mansfield Hospital, at 335 Glessner Avenue, Mansfield, OH 44903 in Richland County. The practice phone is (419) 526-8000.
- OhioHealth Mansfield Hospital335 Glessner Avenue, Mansfield, OH 44903 · Richland CountyPhone(419) 526-8000
Source: Dmand AI Affiliation Data
Dr. Mark Allen Denny is affiliated with 1 site of care and 1 medical group
Dr. Denny's primary practice is OhioHealth Mansfield Hospital in Mansfield, Ohio, part of OhioHealth. The medical group on file is Mid-Ohio Emergency Services (MOES).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Allen Denny's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Denny practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OhioHealth Mansfield Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Allen Denny is one of 2,401 emergency medicine physicians in Ohio
Emergency medicine is Dr. Denny's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Denny's licenses on file in 2 states: Ohio and Washington.
Specialties and state licenses
- Emergency medicine, OhioPrimary
- Washington license
Emergency medicine physicians near Dr. Denny
Counts of emergency 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 Allen Denny billed Medicare for 151 services in 2024
CMS data shows 151 Medicare services from Dr. Denny across 3 procedure codes in 2024, for 140 Medicare patients. Medicare paid $14,040 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Denny's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1852024: 13925%
- Tests and treatments
- 2023: 512024: 1276%
Dr. Denny compared with the Ohio median for emergency medicine physicians, 2024
- Dr. Denny
- Ohio median
- Medicare services
- 151vs 26643% below
- Medicare patients
- 140vs 24844% below
- Part D claims
- 77vs 6518% above
Medians across 2,448 emergency medicine physicians in Ohio with Dmand AI profiles that report each measure.
Dr. Denny'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 Allen Denny treated 140 Medicare patients in 2024, average age 71
CMS counts 140 Medicare patients who saw Dr. Denny in 2024. The largest group is 65 to 74, with 44 patients. 74% of them have high blood pressure, and 71% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Denny's median patient age at 68, with 64% women.
Dr. Denny's Medicare patients by age, 2024
Dr. Denny's Medicare patients by sex, 2024
- Women8057%
- Men6043%
Chronic conditions among Dr. Denny's Medicare patients, 2024
- High blood pressure74%
- High cholesterol71%
- Arthritis43%
- Diabetes32%
- Mood disorders32%
- Anxiety30%
- Depression29%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Denny's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Allen Denny wrote 185 Medicare Part D claims in 2024
In 2024, Dr. Denny wrote 185 Medicare Part D claims for 145 patients. 92% of them were for generic drugs. CMS names the drug for 77 of them, across 3 drugs with 11 or more claims each, at $527 in total drug cost. In 2023, CMS named 126 claims across 6 drugs.
Dr. Denny's Part D claims by kind of drug, 2024
- Generic171 claims92%
- Brand-name14 claims8%
Dr. Denny'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. Denny's Part D claims, 2024
- Opioids7%13 of 185 claims
- Antibiotics49%90 of 185 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: 1262024: 7739%
Drugs named by CMS: 3 in 2024, 6 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. Mark Allen Denny takes part in Medicare
Dr. Denny accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Allen Denny received $263 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Denny from 1 drug or device company in 2018. Speaker and faculty fees make up the largest share, 100% of the total. Masimo Corporation paid the most, $263.
Companies that paid Dr. Denny the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Allen Denny graduated from Ohio State University College of Medicine
Dr. Denny graduated from Ohio State University College of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Allen Denny'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) |
| 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. Mark Allen Denny
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 Allen Denny's NPI number?
Dr. Mark Allen Denny's NPI number is 1801863626. It was assigned on March 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Allen Denny?
Dr. Mark Allen Denny is an emergency medicine physician in Mansfield, Ohio. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Allen Denny practice?
Dr. Denny practices at 335 Glessner Avenue, Mansfield, OH 44903. Dr. Denny's primary practice is OhioHealth Mansfield Hospital in Mansfield, Ohio, part of OhioHealth.
What is Dr. Mark Allen Denny's office phone number?
The practice phone on file for Dr. Denny is (419) 526-8000.
What is Dr. Mark Allen Denny's medical license number?
Dr. Denny holds Ohio license 35079233, one of the licenses on file in 2 states.
Which states has Dr. Mark Allen Denny been licensed in?
Dmand AI has state licenses on file for Dr. Denny in Ohio and Washington.
Which hospitals is Dr. Mark Allen Denny affiliated with?
Dr. Denny practices at OhioHealth Mansfield Hospital in Mansfield, Ohio.
What medical group is Dr. Mark Allen Denny part of?
Dr. Denny is linked to Mid-Ohio Emergency Services (MOES).
Does Dr. Mark Allen Denny accept Medicare?
Yes. CMS data shows Dr. Denny billed Medicare for 151 services in 2024, and Dr. Denny accepts Medicare assignment.
How many Medicare patients does Dr. Mark Allen Denny see?
CMS counts 140 Medicare patients who saw Dr. Denny in 2024, with an average age of 71.
Show 5 more questionsShow fewer questions
What services does Dr. Mark Allen Denny bill to Medicare?
In 2024, Dr. Denny's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and heart test or procedure (93010).
Where did Dr. Mark Allen Denny go to medical school?
Dr. Denny graduated from Ohio State University College of Medicine in 1999.
What drugs does Dr. Mark Allen Denny prescribe most?
In 2024 Medicare Part D data, Dr. Denny's most prescribed drugs by claims were Cephalexin, Doxycycline Hyclate and Prednisone.
Has Dr. Mark Allen Denny received payments from drug or device companies?
CMS Open Payments shows $263 in general payments to Dr. Denny from 1 company from 2018 to 2018. The largest total came from Masimo Corporation.
How long has Dr. Mark Allen Denny been practicing?
Dr. Denny graduated from medical school in 1999, 27 years ago.
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