Dr. Jonathon K. Nicholson, MD
- Hospital affiliations
- 1
- Industry payments
- $50
- Medical groups
- 5
- State licenses
- 2
- Year NPI issued
- 2005
- Practice address
- 1404 East Second Street, Defiance, OH 43512
- Practice phone
- Call (419) 782-8444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nicholson'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. Jonathon K. Nicholson is a pediatrician in Defiance, Ohio
Dr. Nicholson practices at Mercy Health - Defiance Hospital in Defiance, Ohio, part of Bon Secours Mercy Health.
Dr. Nicholson's NPI, 1538167572, was assigned on July 13, 2005. Dr. Nicholson graduated from Medical College of Ohio in 2002. Dr. Nicholson holds Michigan license 4301104162.
- NPI
- 1538167572NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810993342
- NPI enumeration date
- July 13, 2005
- NPI status
- Active
- Practice phone
- (419) 782-8444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathon K. Nicholson practices at Mercy Health - Defiance Hospital in Defiance, Ohio
Dr. Nicholson's primary practice is Mercy Health - Defiance Hospital, at 1404 East Second Street, Defiance, OH 43512 in Defiance County. The practice phone is (419) 782-8444.
- Mercy Health - Defiance Hospital1404 East Second Street, Defiance, OH 43512 · Defiance CountyPhone(419) 782-8444
Source: Dmand AI Affiliation Data
Dr. Jonathon K. Nicholson is affiliated with 3 sites of care and 5 medical groups
Dr. Nicholson's primary practice is Mercy Health - Defiance Hospital in Defiance, Ohio, part of Bon Secours Mercy Health. The medical group on file is CMDPN Medical Group of Washington P.C. Dmand AI also links Dr. Nicholson to 4 more medical groups, 1 hospital outpatient department and 1 therapy and rehab clinic, 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. Jonathon K. Nicholson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nicholson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Health - Defiance Hospital | Available with a free account |
| +2 more sites and 4 medical groups | 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 Bon Secours Mercy Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jonathon K. Nicholson is one of 2,468 pediatricians in Ohio
Pediatrics is Dr. Nicholson's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dmand AI has Dr. Nicholson's licenses on file in 2 states: Michigan and Ohio.
Specialties and state licenses
- Pediatrics, MichiganPrimary
- Adolescent medicine (internal medicine), Ohio
Pediatricians near Dr. Nicholson
Counts of pediatricians 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. Jonathon K. Nicholson's patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Nicholson's median patient age at 10, with 51% women.
Dr. Nicholson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Jonathon K. Nicholson received $50 in industry payments from 2022 to 2025
CMS Open Payments shows 2 general payments to Dr. Nicholson from 2 drug and device companies from 2022 to 2025. Education make up the largest share, 68% of the total. Supernus Pharmaceuticals, Inc. paid the most, $34.
General payments to Dr. Nicholson by program year, 2022 to 2025
General payments to Dr. Nicholson by kind, 2022 to 2025
- Education$3468%
- Food and beverage$1632%
Companies that paid Dr. Nicholson the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathon K. Nicholson graduated from Medical College of Ohio
Dr. Nicholson graduated from Medical College of Ohio in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathon K. Nicholson'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 |
| 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. Jonathon K. Nicholson
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. Jonathon K. Nicholson's NPI number?
Dr. Jonathon K. Nicholson's NPI number is 1538167572. It was assigned on July 13, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathon K. Nicholson?
Dr. Jonathon K. Nicholson is a pediatrician in Defiance, Ohio. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Jonathon K. Nicholson practice?
Dr. Nicholson practices at 1404 East Second Street, Defiance, OH 43512. Dr. Nicholson's primary practice is Mercy Health - Defiance Hospital in Defiance, Ohio, part of Bon Secours Mercy Health. Dmand AI also links Dr. Nicholson to 4 medical groups, 1 hospital outpatient department and 1 therapy and rehab clinic.
What is Dr. Jonathon K. Nicholson's office phone number?
The practice phone on file for Dr. Nicholson is (419) 782-8444.
What is Dr. Jonathon K. Nicholson's medical license number?
Dr. Nicholson holds Michigan license 4301104162, one of the licenses on file in 2 states.
Which states has Dr. Jonathon K. Nicholson been licensed in?
Dmand AI has state licenses on file for Dr. Nicholson in Michigan and Ohio.
Which hospitals is Dr. Jonathon K. Nicholson affiliated with?
Dr. Nicholson practices at Mercy Health - Defiance Hospital in Defiance, Ohio.
What medical group is Dr. Jonathon K. Nicholson part of?
Dr. Nicholson is linked to CMDPN Medical Group of Washington P.C. Dmand AI links Dr. Nicholson to 4 more medical groups.
Where did Dr. Jonathon K. Nicholson go to medical school?
Dr. Nicholson graduated from Medical College of Ohio in 2002.
Has Dr. Jonathon K. Nicholson received payments from drug or device companies?
CMS Open Payments shows $50 in general payments to Dr. Nicholson from 2 companies from 2022 to 2025. The largest total came from Supernus Pharmaceuticals, Inc.
How long has Dr. Jonathon K. Nicholson been practicing?
Dr. Nicholson graduated from medical school in 2002, 24 years ago.
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