Dr. Mark Clyne Long, DO
- Part D claims, 2018
- 250
- Industry payments
- $52
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2015
- Practice address
- 17273 Sr 104, Chillicothe, OH 45601
- Practice phone
- Call (608) 821-7200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chillicothe VA Medical Center
VA Clinic / Health Facility · Chillicothe, Ohio
Find Dr. Long'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 Clyne Long is a psychiatrist in Chillicothe, Ohio
Dr. Long practices at Chillicothe VA Medical Center in Chillicothe, Ohio.
Dr. Long's NPI, 1821475864, was assigned on April 29, 2015. Dr. Long holds Ohio license 34.013837.
- NPI
- 1821475864NPI Registry (opens in a new tab)
- NPI enumeration date
- April 29, 2015
- NPI status
- Active
- Practice phone
- (608) 821-7200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark Clyne Long practices at Chillicothe VA Medical Center in Chillicothe, Ohio
Dr. Long's primary practice is Chillicothe VA Medical Center, at 17273 Sr 104, Chillicothe, OH 45601. The practice phone is (608) 821-7200.
- Chillicothe VA Medical Center17273 Sr 104, Chillicothe, OH 45601Phone(608) 821-7200
Source: Dmand AI Affiliation Data
Dr. Mark Clyne Long is affiliated with 1 site of care
Dr. Long's primary practice is Chillicothe VA Medical Center in Chillicothe, Ohio. Dr. Long's employer is on file too: a government & correctional health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Clyne Long's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Long practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chillicothe VA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Clyne Long is one of 1,227 psychiatrists in Ohio
Psychiatry is Dr. Long's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Long is licensed in Ohio.
Specialties and state licenses
- Psychiatry, OhioPrimary
Psychiatrists near Dr. Long
Counts of psychiatrists 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 Clyne Long's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Long's median patient age at 69, with 0% women.
Dr. Long's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Mark Clyne Long wrote 250 Medicare Part D claims in 2018
In 2018, Dr. Long wrote 250 Medicare Part D claims. They cover 13 drugs, with $18,571 in total drug cost. In 2017, CMS named 109 claims across 7 drugs.
Dr. Long's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 1092018: 250129%
Drugs named by CMS: 13 in 2018, 7 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark Clyne Long received $52 in industry payments from 2019 to 2025
CMS Open Payments shows 2 general payments to Dr. Long from 2 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $27.
General payments to Dr. Long by program year, 2019 to 2025
Companies that paid Dr. Long the most, 2019 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 Clyne Long'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Clyne Long
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 Clyne Long's NPI number?
Dr. Mark Clyne Long's NPI number is 1821475864. It was assigned on April 29, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Clyne Long?
Dr. Mark Clyne Long is a psychiatrist in Chillicothe, Ohio. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mark Clyne Long practice?
Dr. Long practices at 17273 Sr 104, Chillicothe, OH 45601. Dr. Long's primary practice is Chillicothe VA Medical Center in Chillicothe, Ohio.
What is Dr. Mark Clyne Long's office phone number?
The practice phone on file for Dr. Long is (608) 821-7200.
What is Dr. Mark Clyne Long's medical license number?
Dr. Long holds Ohio license 34.013837.
What drugs does Dr. Mark Clyne Long prescribe most?
In 2018 Medicare Part D data, Dr. Long's most prescribed drugs by claims were Buspirone HCl, Sertraline HCl and Lamotrigine.
Has Dr. Mark Clyne Long received payments from drug or device companies?
CMS Open Payments shows $52 in general payments to Dr. Long from 2 companies from 2019 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Mark Clyne Long been practicing?
Dr. Long's NPI was assigned in 2015.
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