Jon Mark Johnson, M.D.
Internal Medicine Physician · Stillwater, OK
Jon Mark Johnson, M.D. is an internal medicine physician with a practice address in Stillwater, Oklahoma, and NPI 1285992107, issued on Apr 28, 2012. Check the license (Oklahoma 29234, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Jon Mark Johnson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 29234 OK
Self-reported in NPPES; status is on the state search - Practice location
- 608 S Hester St, Stillwater, OK 74074
- Phone
- (405) 377-8000
- Enumerated
- Apr 28, 2012
- Record last updated
- Jul 27, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150908000805); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 608 S Hester St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jon Johnson, M.D.Internal Medicine Physician1598765497
- Vicki Latham, PA-CPhysician Assistant1790740769
- John Williams, M.D.Internal Medicine Physician1528068426
Verify Jon Mark Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 29234Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
331 Medicare Part D claims for 135 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Potassium Chloride22 claims
- Levofloxacin18 claims
- Furosemide16 claims
- Atorvastatin Calcium14 claims
- Cefdinir13 claims
- Clopidogrel13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $47.63
3 payments; by number, the most common kind was food and beverage; the largest payer was Lundbeck LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Stillwater Medical Center AuthorityStillwater, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jon Mark Johnson among 1,115 internal medicine physician records in Oklahoma
Jon Mark Johnson, M.D. is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 60% of them.
- NPI issued2012 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2012 · median 2007 among the 653 with a school on file
- Record last updated2016 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 internal medicine physician records list a practice address in Stillwater
They are 24 of the 1,440 NPPES records with a practice address in Stillwater, and 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Stillwater → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Terry Brown, M.D.Stillwater, OK 740741124004759
- Steven Cummings, M.D.Stillwater, OK 740741750365292
- Sam Earnest, M.D.Stillwater, OK 740741962488742
- Gilbert Emde, M.D.Stillwater, OK 740741801889373
- Jennifer Ferrell, DOStillwater, OK 740741902860406
- Jennifer Gallaway, ARNPStillwater, OK 740741194767327
- Darren Green, M.D.Stillwater, OK 740741851378293
- Woody Jenkins, M.D.Stillwater, OK 740741639156672
Common questions
What is Jon Mark Johnson, M.D.'s NPI number?
Jon Mark Johnson, M.D.'s National Provider Identifier (NPI) is 1285992107, issued on Apr 28, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Jon Mark Johnson, M.D. located?
The NPPES record lists a practice address at 608 S Hester St, Stillwater, OK, 74074. Phone: (405) 377-8000. Providers update this record themselves, so call before visiting.
How can I verify Jon Mark Johnson, M.D.'s license?
NPPES lists Oklahoma license number 29234, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jon Mark Johnson, M.D. prescribe under Medicare Part D?
In 2024, Jon Mark Johnson, M.D. had 331 Medicare Part D claims for 135 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Jon Mark Johnson, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.