Dr. Jonathan A. Wynstra, MD
- Medicare services, 2017
- 11
- Part D claims, 2024
- 584
- Hospital affiliations
- 1
- Industry payments
- $478
- Medical group
- 1
- Practice address
- 1099 Medical Center Circle, Mayfield, KY 42066
- Practice phone
- Call (270) 251-4585
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Wynstra's professional email, personal email and mobile number
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Dr. Jonathan A. Wynstra is an OB-GYN in Mayfield, Kentucky
Dr. Wynstra practices at Jackson Purchase Medical Center in Mayfield, Kentucky, part of Lifepoint Health.
Dr. Wynstra's NPI, 1235132960, was assigned on May 26, 2005. Dr. Wynstra graduated from Medical College of Wisconsin in 1989. Dr. Wynstra holds Kentucky license 31915.
- NPI
- 1235132960NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496778730
- NPI enumeration date
- May 26, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (270) 251-4585
- 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. Jonathan A. Wynstra practices at Jackson Purchase Medical Center in Mayfield, Kentucky
Dr. Wynstra's primary practice is Jackson Purchase Medical Center, at 1099 Medical Center Circle, Mayfield, KY 42066 in Graves County. The practice phone is (270) 251-4585.
- Jackson Purchase Medical Center1099 Medical Center Circle, Mayfield, KY 42066 · Graves CountyPhone(270) 251-4585
Source: Dmand AI Affiliation Data
Dr. Jonathan A. Wynstra is affiliated with 2 sites of care and 1 medical group
Dr. Wynstra's primary practice is Jackson Purchase Medical Center in Mayfield, Kentucky, part of Lifepoint Health. The medical group on file is Jackson Purchase Medical Group. Dmand AI also links Dr. Wynstra to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan A. Wynstra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wynstra practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jackson Purchase Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan A. Wynstra is one of 456 OB-GYNs in Kentucky
Obstetrics and gynecology is Dr. Wynstra's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Wynstra is licensed in Kentucky.
Specialties and state licenses
- Obstetrics and gynecology, KentuckyPrimary
OB-GYNs near Dr. Wynstra
Counts of OB-GYNs 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. Jonathan A. Wynstra billed Medicare for 11 services in 2017
CMS data shows 11 Medicare services from Dr. Wynstra across 1 procedure code in 2017. Medicare paid $53 for them. Every service was in an office.
Dr. Wynstra compared with the Kentucky median for OB-GYNs, 2017
- Dr. Wynstra
- Kentucky median
- Medicare services
- 11vs 3871% below
- Part D claims
- 482vs 4810.0 times
Medians across 433 OB-GYNs in Kentucky with Dmand AI profiles that report each measure.
Dr. Wynstra's most billed Medicare procedure codes, 2017
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. Wynstra?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wynstra and other OB-GYNs in Kentucky.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan A. Wynstra's patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Wynstra's median patient age at 41, with 99% women.
Dr. Wynstra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women99%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Jonathan A. Wynstra wrote 584 Medicare Part D claims in 2024
In 2024, Dr. Wynstra wrote 584 Medicare Part D claims for 120 patients. 91% of them were for generic drugs. CMS names the drug for 482 of them, across 9 drugs with 11 or more claims each, at $23,751 in total drug cost. In 2023, CMS named 430 claims across 10 drugs.
Dr. Wynstra's Part D claims by kind of drug, 2024
- Generic533 claims91%
- Brand-name51 claims9%
Dr. Wynstra'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. Wynstra's Part D claims, 2024
- Antibiotics4%22 of 584 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: 4302024: 48212%
Drugs named by CMS: 9 in 2024, 10 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
How Dr. Jonathan A. Wynstra takes part in Medicare
Dr. Wynstra accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jonathan A. Wynstra received $478 in industry payments from 2016 to 2025
CMS Open Payments shows 22 general payments to Dr. Wynstra from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Sumitomo Pharma America, Inc. paid the most, $105.
General payments to Dr. Wynstra by program year, 2016 to 2025
General payments to Dr. Wynstra by kind, 2016 to 2025
- Food and beverage$44192%
- Education$378%
Companies that paid Dr. Wynstra 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. Jonathan A. Wynstra graduated from Medical College of Wisconsin
Dr. Wynstra graduated from Medical College of Wisconsin in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan A. Wynstra'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 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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Jonathan A. Wynstra
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. Jonathan A. Wynstra's NPI number?
Dr. Jonathan A. Wynstra's NPI number is 1235132960. It was assigned on May 26, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan A. Wynstra?
Dr. Jonathan A. Wynstra is an OB-GYN in Mayfield, Kentucky. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Jonathan A. Wynstra practice?
Dr. Wynstra practices at 1099 Medical Center Circle, Mayfield, KY 42066. Dr. Wynstra's primary practice is Jackson Purchase Medical Center in Mayfield, Kentucky, part of Lifepoint Health. Dmand AI also links Dr. Wynstra to 1 group practice or clinic.
What is Dr. Jonathan A. Wynstra's office phone number?
The practice phone on file for Dr. Wynstra is (270) 251-4585.
What is Dr. Jonathan A. Wynstra's medical license number?
Dr. Wynstra holds Kentucky license 31915.
Which hospitals is Dr. Jonathan A. Wynstra affiliated with?
Dr. Wynstra practices at Jackson Purchase Medical Center in Mayfield, Kentucky.
What medical group is Dr. Jonathan A. Wynstra part of?
Dr. Wynstra is linked to Jackson Purchase Medical Group.
Does Dr. Jonathan A. Wynstra accept Medicare?
Yes. CMS data shows Dr. Wynstra billed Medicare for 11 services in 2017, and Dr. Wynstra accepts Medicare assignment.
What services does Dr. Jonathan A. Wynstra bill to Medicare?
In 2017, Dr. Wynstra's most billed Medicare services were lab and pathology test (87210).
Where did Dr. Jonathan A. Wynstra go to medical school?
Dr. Wynstra graduated from Medical College of Wisconsin in 1989.
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What drugs does Dr. Jonathan A. Wynstra prescribe most?
In 2024 Medicare Part D data, Dr. Wynstra's most prescribed drugs by claims were Estradiol, Medroxyprogesterone Acetate and Raloxifene HCl.
Has Dr. Jonathan A. Wynstra received payments from drug or device companies?
CMS Open Payments shows $478 in general payments to Dr. Wynstra from 8 companies from 2016 to 2025. The largest total came from Sumitomo Pharma America, Inc.
How long has Dr. Jonathan A. Wynstra been practicing?
Dr. Wynstra graduated from medical school in 1989, 37 years ago.
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