Dr. Mark Louis Segal, MD
- Medicare services, 2024
- 6,531
- Medicare patients, 2024
- 264
- Part D claims, 2024
- 1,013
- Industry payments
- $13,743
- Affiliated sites
- 3
- Practice address
- 701 Tech Center Drive Suite 200, Gahanna, OH 43230
- Practice phone
- Call (614) 396-2670
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Central Ohio Urology Surgery Center - Gahanna
Surgery Center - Medicare-Certified · Gahanna, Ohio
Find Dr. Segal'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 Louis Segal is a hematologist and oncologist in Columbus, Ohio
Dr. Segal practices at Central Ohio Urology Surgery Center - Gahanna in Gahanna, Ohio.
Dr. Segal's NPI, 1093715385, was assigned on July 28, 2005. Dr. Segal graduated from Ohio State University College of Medicine in 1976. Dr. Segal holds Ohio license 35043494.
- NPI
- 1093715385NPI Registry (opens in a new tab)
- NPI enumeration date
- July 28, 2005
- NPI status
- Active
- Practice phone
- (614) 396-2670
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark Louis Segal practices in Gahanna and Columbus
Dr. Segal's primary practice is Central Ohio Urology Surgery Center - Gahanna, at 701 Tech Center Drive Suite 200, Gahanna, OH 43230. The practice phone is (614) 396-2670. Dr. Segal also practices at Central Ohio Urology Surgery Center, LLC, 3100 Plaza Properties Blvd, Columbus, OH 43219.
- Central Ohio Urology Surgery Center - GahannaPrimary701 Tech Center Drive Suite 200, Gahanna, OH 43230Phone(614) 396-2670
- Central Ohio Urology Surgery Center, LLC3100 Plaza Properties Blvd, Columbus, OH 43219 · Franklin CountyPhone(614) 751-1010
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Mark Louis Segal is affiliated with 3 sites of care and 2 medical groups
Dr. Segal's primary practice is Central Ohio Urology Surgery Center - Gahanna in Gahanna, Ohio. The medical group on file is Zangmeister Cancer Center. Dmand AI also links Dr. Segal to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Louis Segal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Segal practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Central Ohio Urology Surgery Center - Gahanna | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Louis Segal is one of 460 hematologists and oncologists in Ohio
Hematology and oncology is Dr. Segal's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Segal is licensed in Ohio.
Specialties and state licenses
- Hematology and oncology, OhioPrimary
Hematologists and oncologists near Dr. Segal
Counts of hematologists and oncologists 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 Louis Segal billed Medicare for 6,531 services in 2024
CMS data shows 6,531 Medicare services from Dr. Segal across 13 procedure codes in 2024, for 264 Medicare patients. Medicare paid $106,105 for them. Every service was in an office.
Dr. Segal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 5542024: 2,500351%
- Other services
- 2023: 2,8982024: 2,09828%
- Lab and pathology
- 2023: 8222024: 66419%
- Office and hospital visits
- 2023: 8282024: 63423%
- Surgery
- 2023: 2022024: 552173%
- Tests and treatments
- 2023: 3252024: 4387%
- Imaging
- 2023: 622024: 4035%
Dr. Segal compared with the Ohio median for hematologists and oncologists, 2024
- Dr. Segal
- Ohio median
- Medicare services
- 6,531vs 62610.4 times
- Medicare patients
- 264vs 23413% above
- Part D claims
- 819vs 47871% above
Medians across 452 hematologists and oncologists in Ohio with Dmand AI profiles that report each measure.
Dr. Segal'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. Segal and other hematologists and oncologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Louis Segal treated 264 Medicare patients in 2024, average age 76
CMS counts 264 Medicare patients who saw Dr. Segal in 2024. The largest group is 65 to 74, with 108 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.77, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Segal's median patient age at 70, with 53% women.
Dr. Segal's Medicare patients by age, 2024
Dr. Segal's Medicare patients by sex, 2024
- Women14655%
- Men11845%
Chronic conditions among Dr. Segal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis51%
- Ischemic heart disease38%
- Cancer34%
- Chronic kidney disease33%
- Diabetes30%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Segal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women53%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Louis Segal wrote 1,013 Medicare Part D claims in 2024
In 2024, Dr. Segal wrote 1,013 Medicare Part D claims for 151 patients. 72% of them were for generic drugs. CMS names the drug for 819 of them, across 27 drugs with 11 or more claims each, at $3,905,425 in total drug cost. In 2023, CMS named 752 claims across 27 drugs.
Dr. Segal's Part D claims by kind of drug, 2024
- Generic734 claims72%
- Brand-name279 claims28%
Dr. Segal'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. Segal's Part D claims, 2024
- Opioids20%202 of 1,013 claims
- Antibiotics4%36 of 1,013 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: 7522024: 8199%
Drugs named by CMS: 27 in 2024, 27 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
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Dr. Mark Louis Segal received $13,743 in industry payments from 2016 to 2025
CMS Open Payments shows 693 general payments to Dr. Segal from 91 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Eisai Inc. paid the most, $863.
General payments to Dr. Segal by program year, 2016 to 2025
General payments to Dr. Segal by kind, 2016 to 2025
- Food and beverage$13,20096%
- Education$5424%
Companies that paid Dr. Segal 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. Mark Louis Segal graduated from Ohio State University College of Medicine
Dr. Segal graduated from Ohio State University College of Medicine in 1976.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Louis Segal'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 Affiliation DataDmand AI Practice 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) |
| 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 Louis Segal
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 Louis Segal's NPI number?
Dr. Mark Louis Segal's NPI number is 1093715385. It was assigned on July 28, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Louis Segal?
Dr. Mark Louis Segal is a hematologist and oncologist in Columbus, Ohio. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Mark Louis Segal practice?
Dr. Segal practices at 701 Tech Center Drive Suite 200, Gahanna, OH 43230. Dr. Segal also practices at 3100 Plaza Properties Blvd, Columbus, OH 43219. Dr. Segal's primary practice is Central Ohio Urology Surgery Center - Gahanna in Gahanna, Ohio. Dmand AI also links Dr. Segal to 2 group practices and clinics and 1 medical group.
What is Dr. Mark Louis Segal's office phone number?
The practice phone on file for Dr. Segal is (614) 396-2670.
What is Dr. Mark Louis Segal's medical license number?
Dr. Segal holds Ohio license 35043494.
What medical group is Dr. Mark Louis Segal part of?
Dr. Segal is linked to Zangmeister Cancer Center. Dmand AI links Dr. Segal to 1 more medical group.
Does Dr. Mark Louis Segal accept Medicare?
Yes. CMS data shows Dr. Segal billed Medicare for 6,531 services in 2024.
How many Medicare patients does Dr. Mark Louis Segal see?
CMS counts 264 Medicare patients who saw Dr. Segal in 2024, with an average age of 76.
What services does Dr. Mark Louis Segal bill to Medicare?
In 2024, Dr. Segal's most billed Medicare services were injected or infused drug (J1437), medicare temporary code (Q9967) and lab and pathology test (85025).
Where did Dr. Mark Louis Segal go to medical school?
Dr. Segal graduated from Ohio State University College of Medicine in 1976.
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What drugs does Dr. Mark Louis Segal prescribe most?
In 2024 Medicare Part D data, Dr. Segal's most prescribed drugs by claims were Oxycodone HCl, Hydroxyurea and Letrozole.
Has Dr. Mark Louis Segal received payments from drug or device companies?
CMS Open Payments shows $13,743 in general payments to Dr. Segal from 91 companies from 2016 to 2025. The largest total came from Eisai Inc.
How long has Dr. Mark Louis Segal been practicing?
Dr. Segal graduated from medical school in 1976, 50 years ago.
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