Dr. John Stephen Koval, MD
- Medicare services, 2018
- 112
- Medicare patients, 2024
- 47
- Part D claims, 2017
- 27
- Industry payments
- $28
- State license
- 1
- Practice address
- 205 E Palmer Rd, Bellefontaine, OH 43311
- Practice phone
- Call (937) 592-4015
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mary Rutan Hospital
Bellefontaine, Ohio
Find Dr. Koval'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. John Stephen Koval is an anesthesiologist in Bellefontaine, Ohio
Dr. Koval practices at Mary Rutan Hospital in Bellefontaine, Ohio.
Dr. Koval's NPI, 1932189297, was assigned on January 20, 2006. Dr. Koval holds Ohio license 35-077025.
- NPI
- 1932189297NPI Registry (opens in a new tab)
- NPI enumeration date
- January 20, 2006
- NPI status
- Active
- Practice phone
- (937) 592-4015
- 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 Practice Data
Dr. John Stephen Koval practices at Mary Rutan Hospital in Bellefontaine, Ohio
Dr. Koval's primary practice is Mary Rutan Hospital, at 205 E Palmer Rd, Bellefontaine, OH 43311 in Logan County. The practice phone is (937) 592-4015.
- Mary Rutan Hospital205 E Palmer Rd, Bellefontaine, OH 43311 · Logan CountyPhone(937) 592-4015
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Stephen Koval is affiliated with 1 site of care
Dr. Koval's primary practice is Mary Rutan Hospital in Bellefontaine, Ohio.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Stephen Koval's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koval practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mary Rutan Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Stephen Koval is one of 1,673 anesthesiologists in Ohio
Anesthesiology is Dr. Koval's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Koval is licensed in Ohio.
Specialties and state licenses
- Anesthesiology, OhioPrimary
Anesthesiologists near Dr. Koval
Counts of anesthesiologists 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. John Stephen Koval billed Medicare for 112 services in 2018
CMS data shows 112 Medicare services from Dr. Koval across 5 procedure codes in 2018, for 47 Medicare patients. Medicare paid $6,157 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Koval's Medicare services by type, 2016 to 2018
- 2016
- 2018
- Anesthesia
- 2016: 142018: 112700%
- Surgery
- 2016: 122018: 0100%
Dr. Koval compared with the Ohio median for anesthesiologists, 2018
- Dr. Koval
- Ohio median
- Medicare services
- 112vs 7844% above
- Medicare patients
- 47vs 14568% below
- Part D claims
- 27vs 258% above
Medians across 1,609 anesthesiologists in Ohio with Dmand AI profiles that report each measure.
Dr. Koval's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Koval?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Koval and other anesthesiologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Stephen Koval treated 47 Medicare patients in 2024, average age 75
CMS counts 47 Medicare patients who saw Dr. Koval in 2024. The largest group is 65 to 74, with 25 patients. 75% of them have high blood pressure, and 74% have high cholesterol. Their average risk score is 1.10, where 1.00 is the Medicare average.
Dr. Koval's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Koval's Medicare patients by sex, 2024
- Women2655%
- Men2145%
Chronic conditions among Dr. Koval's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis60%
- Mood disorders40%
- Depression38%
- Diabetes36%
- Ischemic heart disease34%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Source: Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Stephen Koval wrote 27 Medicare Part D claims in 2017
In 2017, Dr. Koval wrote 27 Medicare Part D claims. They cover 2 drugs, with $137 in total drug cost.
Dr. Koval's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Stephen Koval received $28 in industry payments from 2016 to 2024
CMS Open Payments shows 2 general payments to Dr. Koval from 1 drug or device company from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $28.
General payments to Dr. Koval by program year, 2016 to 2024
Companies that paid Dr. Koval the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Stephen Koval'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 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 | Medicare 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) |
| 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. John Stephen Koval
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. John Stephen Koval's NPI number?
Dr. John Stephen Koval's NPI number is 1932189297. It was assigned on January 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Stephen Koval?
Dr. John Stephen Koval is an anesthesiologist in Bellefontaine, Ohio. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. John Stephen Koval practice?
Dr. Koval practices at 205 E Palmer Rd, Bellefontaine, OH 43311. Dr. Koval's primary practice is Mary Rutan Hospital in Bellefontaine, Ohio.
What is Dr. John Stephen Koval's office phone number?
The practice phone on file for Dr. Koval is (937) 592-4015.
What is Dr. John Stephen Koval's medical license number?
Dr. Koval holds Ohio license 35-077025.
Does Dr. John Stephen Koval accept Medicare?
Yes. CMS data shows Dr. Koval billed Medicare for 112 services in 2018.
How many Medicare patients does Dr. John Stephen Koval see?
CMS counts 47 Medicare patients who saw Dr. Koval in 2024, with an average age of 75.
What services does Dr. John Stephen Koval bill to Medicare?
In 2018, Dr. Koval's most billed Medicare services were anesthesia (00811), anesthesia (00812) and anesthesia (00731).
What drugs does Dr. John Stephen Koval prescribe most?
In 2017 Medicare Part D data, Dr. Koval's most prescribed drugs by claims were Metformin HCl ER and Simvastatin.
Has Dr. John Stephen Koval received payments from drug or device companies?
CMS Open Payments shows $28 in general payments to Dr. Koval from 1 company from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. John Stephen Koval been practicing?
Dr. Koval's NPI was assigned in 2006.
Selling to anesthesiology practices?
See anesthesiologists in Ohio by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card