Kelly Marak, D.O., M.S.
Internal Medicine Physician · Tahlequah, OK
Kelly Marak, D.O., M.S. is an internal medicine physician with a practice address in Tahlequah, Oklahoma, and NPI 1316174675, issued on Jun 14, 2009. Check the license (Oklahoma 5679, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Kelly Marak
- Credential
- D.O., M.S.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 5679 OK
240394 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 E Downing St, Tahlequah, OK 74464
- Phone
- (918) 456-0641
- Enumerated
- Jun 14, 2009
- Record last updated
- Apr 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160819001425); accepts Medicare assignment
- Medical or professional school
- University Of North Texas Hsc, College Of Osteopathic Med, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 1400 E Downing St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kelly Marak 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 5679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
155 Medicare Part D claims for 69 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Potassium Chloride11 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: $20.80
1 payment: food and beverage; the largest payer was Roche Diagnostics Corporation. 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.
2 hospitals and group practices
- Northeastern Health SystemTahlequah, OK · Acute Care Hospitals2 of 5 stars
- Tahlequah Medical Group LLCTahlequah, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Kelly Marak among 1,115 internal medicine physician records in Oklahoma
Kelly Marak, D.O., M.S. 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 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 45% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2007 among the 653 with a school on file
- Record last updated2020 · 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 Tahlequah
They are 24 of the 1,190 NPPES records with a practice address in Tahlequah, and 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Tahlequah → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Muneeza Afif, MDTahlequah, OK 744641740544428
- Natasha Bray, D.O.Tahlequah, OK 744641285840660
- Sheri Christian-Armstrong, DOTahlequah, OK 744641679996706
- Prashant Kaushik, MDTahlequah, OK 744641073615324
- Nancy Lamoreux, M.D.Tahlequah, OK 744641326029018
- Herbert Littleton, DOTahlequah, OK 744641376588145
- Elaine Quintana, M.D.Tahlequah, OK 744641689758393
- Jena Rogers, MDTahlequah, OK 744641831167139
Common questions
What is Kelly Marak, D.O., M.S.'s NPI number?
Kelly Marak, D.O., M.S.'s National Provider Identifier (NPI) is 1316174675, issued on Jun 14, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Kelly Marak, D.O., M.S. located?
The NPPES record lists a practice address at 1400 E Downing St, Tahlequah, OK, 74464. Phone: (918) 456-0641. Providers update this record themselves, so call before visiting.
How can I verify Kelly Marak, D.O., M.S.'s license?
NPPES lists Oklahoma license number 5679, 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 Kelly Marak, D.O., M.S. prescribe under Medicare Part D?
In 2024, Kelly Marak, D.O., M.S. had 155 Medicare Part D claims for 69 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Kelly Marak, D.O., M.S.'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.