NPPES file of Aug 9, 2026

Landon Mitchell Frank

Internal Medicine Physician · Tahlequah, OK

Landon Mitchell Frank is an internal medicine physician with a practice address in Tahlequah, Oklahoma, and NPI 1427625714, issued on Jun 7, 2021. Check the license (Oklahoma 8183, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427625714
Name
Landon Mitchell Frank
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
8183 OK
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 7, 2021
Record last updated
Aug 12, 2025
Medicare enrollment
Enrolled (PECOS I20250725001899); accepts Medicare assignment
Medical or professional school
Oklahoma State University College Of Osteopathic Medicine, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1400 E Downing St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jason Ballew, MDAddiction Medicine (Preventive Medicine) Physician1235146036
  2. Faryal Bhatti, MBBSStudent in an Organized Health Care Education/Training Program1407642705
  3. Celeste Bidwell, APRNAcute Care Nurse Practitioner1184394751
  4. Pakeezah BisharatStudent in an Organized Health Care Education/Training Program1639924822
  5. Blair Brown, DOInternal Medicine Physician1407421027
  6. Stephen Burton, M.D.Neurology Physician1497735740

Verify Landon Mitchell Frank in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
    Search for license 8183
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oklahoma license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% fewer Medicare Part D claims than the average internal medicine physician in 2024

246 Medicare Part D claims for 46 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 11 claims were for opioids.

  1. Landon Frank246
  2. Specialty average3,176

Most prescribed

  1. Levothyroxine Sodium16 claims
  2. Lisinopril16 claims
  3. Carvedilol12 claims
  4. Clopidogrel12 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.

Industry payments in 2024: $20.81

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.

  1. Landon Frank$20.81
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Northeastern Health SystemTahlequah, OK · Acute Care Hospitals2 of 5 stars

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.

Landon Mitchell Frank among 1,115 internal medicine physician records in Oklahoma

Landon Mitchell Frank 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 2021, is newer than 84% of them.

  • NPI issued2021 · 84% of these records are older, 11% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2022 · median 2007 among the 653 with a school on file
  • Record last updated2025 · 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.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Muneeza Afif, MDTahlequah, OK 744641740544428
  2. Natasha Bray, D.O.Tahlequah, OK 744641285840660
  3. Sheri Christian-Armstrong, DOTahlequah, OK 744641679996706
  4. Prashant Kaushik, MDTahlequah, OK 744641073615324
  5. Nancy Lamoreux, M.D.Tahlequah, OK 744641326029018
  6. Herbert Littleton, DOTahlequah, OK 744641376588145
  7. Kelly Marak, D.O., M.S.Tahlequah, OK 744641316174675
  8. Elaine Quintana, M.D.Tahlequah, OK 744641689758393

Common questions

What is Landon Mitchell Frank's NPI number?

Landon Mitchell Frank's National Provider Identifier (NPI) is 1427625714, issued on Jun 7, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Landon Mitchell Frank 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 Landon Mitchell Frank's license?

NPPES lists Oklahoma license number 8183, 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 Landon Mitchell Frank prescribe under Medicare Part D?

In 2024, Landon Mitchell Frank had 246 Medicare Part D claims for 46 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

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.