Dr. Mark E. Fenster, MD
- Medicare services, 2023
- 888
- Part D claims, 2023
- 360
- MIPS score, 2024
- 99
- Industry payments
- $169
- Affiliated sites
- 1
- Practice address
- 5300 Far Hills Ave, Dayton, OH 45429-2381
- Practice phone
- Call (937) 433-7536
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dermatologists Of Southwest Ohio, LLC
Dermatology practice · Dayton, Ohio
Find Dr. Fenster'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 E. Fenster is a mohs-micrographic surgery physician in Dayton, Ohio
Dr. Fenster practices at Dermatologists Of Southwest Ohio, LLC in Dayton, Ohio.
Dr. Fenster's NPI, 1639197049, was assigned on July 17, 2006. Dr. Fenster graduated from Virginia Commonwealth University, School of Medicine in 1989. Dr. Fenster holds Ohio license 35072837F.
- NPI
- 1639197049NPI Registry (opens in a new tab)
- NPI enumeration date
- July 17, 2006
- NPI status
- Active
- Practice phone
- (937) 433-7536
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Fenster practices at Dermatologists of Southwest Ohio, LLC in Dayton, Ohio
Dr. Fenster's primary practice is Dermatologists of Southwest Ohio, LLC, at 5300 Far Hills Ave, Dayton, OH 45429-2381. The practice phone is (937) 433-7536.
- Dermatologists of Southwest Ohio, LLC5300 Far Hills Ave, Dayton, OH 45429-2381Phone(937) 433-7536
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Fenster is affiliated with 1 site of care and 1 medical group
Dr. Fenster's primary practice is Dermatologists Of Southwest Ohio, LLC in Dayton, Ohio. The medical group on file is Dermatologists of Southwest Ohio.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mark E. Fenster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fenster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dermatologists Of Southwest Ohio, LLC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark E. Fenster is one of 43 mohs-micrographic surgery physicians in Ohio
Mohs-micrographic surgery is Dr. Fenster's primary specialty in the NPI Registry, under taxonomy code 207ND0101X. Dr. Fenster is licensed in Ohio.
Specialties and state licenses
- Mohs-micrographic surgery, OhioPrimary
Mohs-micrographic surgery physicians near Dr. Fenster
Counts of mohs-micrographic surgery 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 E. Fenster billed Medicare for 888 services in 2023
CMS data shows 888 Medicare services from Dr. Fenster across 14 procedure codes in 2023. Medicare paid $255,946 for them. Every service was in an office.
Dr. Fenster's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Surgery
- 2022: 1,0382023: 75427%
- Office and hospital visits
- 2022: 4042023: 13467%
Dr. Fenster compared with the Ohio median for mohs-micrographic surgery physicians, 2023
- Dr. Fenster
- Ohio median
- Medicare services
- 888vs 1,01112% below
- Part D claims
- 360vs 1692.1 times
Medians across 42 mohs-micrographic surgery physicians in Ohio with Dmand AI profiles that report each measure.
Dr. Fenster's most billed Medicare procedure codes, 2023
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. Fenster and other mohs-micrographic surgery physicians in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark E. Fenster's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Fenster's median patient age at 76, with 40% women.
Dr. Fenster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Mark E. Fenster wrote 360 Medicare Part D claims in 2023
In 2023, Dr. Fenster wrote 360 Medicare Part D claims. They cover 8 drugs, with $6,883 in total drug cost. In 2022, CMS named 371 claims across 9 drugs.
Dr. Fenster's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 3712023: 3603%
Drugs named by CMS: 8 in 2023, 9 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Mark E. Fenster scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Fenster for performance year 2024, reported as part of a group.
Dr. Fenster's MIPS scores, performance year 2024
- 99of 100Final score
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark E. Fenster received $169 in industry payments from 2019 to 2022
CMS Open Payments shows 10 general payments to Dr. Fenster from 5 drug and device companies from 2019 to 2022. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $64.
General payments to Dr. Fenster by program year, 2019 to 2022
Companies that paid Dr. Fenster the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark E. Fenster graduated from Virginia Commonwealth University, School of Medicine
Dr. Fenster graduated from Virginia Commonwealth University, School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark E. Fenster'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | 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. Mark E. Fenster
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 E. Fenster's NPI number?
Dr. Mark E. Fenster's NPI number is 1639197049. It was assigned on July 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark E. Fenster?
Dr. Mark E. Fenster is a mohs-micrographic surgery physician in Dayton, Ohio. The primary specialty in the NPI Registry is MOHS-Micrographic Surgery Physician (taxonomy code 207ND0101X).
Where does Dr. Mark E. Fenster practice?
Dr. Fenster practices at 5300 Far Hills Ave, Dayton, OH 45429-2381. Dr. Fenster's primary practice is Dermatologists Of Southwest Ohio, LLC in Dayton, Ohio.
What is Dr. Mark E. Fenster's office phone number?
The practice phone on file for Dr. Fenster is (937) 433-7536.
What is Dr. Mark E. Fenster's medical license number?
Dr. Fenster holds Ohio license 35072837F.
What medical group is Dr. Mark E. Fenster part of?
Dr. Fenster is linked to Dermatologists of Southwest Ohio.
Does Dr. Mark E. Fenster accept Medicare?
Yes. CMS data shows Dr. Fenster billed Medicare for 888 services in 2023.
What is Dr. Mark E. Fenster's MIPS score?
Dr. Fenster's MIPS final score for performance year 2024 is 99 out of 100, reported as part of a group.
What services does Dr. Mark E. Fenster bill to Medicare?
In 2023, Dr. Fenster's most billed Medicare services were surgery: skin and soft tissue (17311), office visit, established patient (99213) and surgery: skin and soft tissue (13132).
Where did Dr. Mark E. Fenster go to medical school?
Dr. Fenster graduated from Virginia Commonwealth University, School of Medicine in 1989.
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What drugs does Dr. Mark E. Fenster prescribe most?
In 2023 Medicare Part D data, Dr. Fenster's most prescribed drugs by claims were Cefdinir, Cefadroxil and Azithromycin.
Has Dr. Mark E. Fenster received payments from drug or device companies?
CMS Open Payments shows $169 in general payments to Dr. Fenster from 5 companies from 2019 to 2022. The largest total came from Genentech, Inc.
How long has Dr. Mark E. Fenster been practicing?
Dr. Fenster graduated from medical school in 1989, 37 years ago.
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