NPPES file of Aug 9, 2026

Mark D. Gage, DO

Psychiatry Physician · Tulsa, OK

Mark D. Gage, DO is a psychiatry physician with a practice address in Tulsa, Oklahoma, and NPI 1972544138, issued on Jun 9, 2006. Check the license (Oklahoma 3028, 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
1972544138
Name
Mark D. Gage
Credential
DO
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
3028 OK
Self-reported in NPPES; status is on the state search
Practice location
6915 E 106TH St, Tulsa, OK 74133
Phone
(918) 671-9274
Enumerated
Jun 9, 2006
Record last updated
Nov 27, 2024
Medicaid ID
100216450A OK
Medicare enrollment
Enrolled (PECOS I20040508000249); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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Verify Mark D. Gage 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 3028
    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

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78% fewer Medicare Part D claims than the average psychiatry physician in 2024

219 Medicare Part D claims for 75 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Mark Gage219
  2. Specialty average1,000

Most prescribed

  1. Risperidone19 claims
  2. Trazodone Hcl17 claims
  3. Divalproex Sodium14 claims
  4. Mirtazapine14 claims
  5. Buspirone Hcl13 claims
  6. Quetiapine Fumarate13 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.

Bills Medicare through 2 group practices

  1. Forefront-Rush Medical Service PAEdmond, OK
  2. Forefront-Rush Medical Services PCDardanelle, AR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark D. Gage among 463 psychiatry physician records in Oklahoma

Mark D. Gage, DO is one of 463 psychiatry physician records with a practice address in Oklahoma. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 56% newer
  • In a Medicare fileYes · 64% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated1991 · median 2005 among the 213 with a school on file
  • Record last updated2024 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in Oklahoma

There are 463 psychiatry physician records in Oklahoma.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Cynthia Bruns, D.O.Tulsa, OK 741331275639197
  2. Branden Carr, D.O., PHDTulsa, OK 741331316409733
  3. Caroline Graham, DOTulsa, OK 741331689240392
  4. Stephen Harnish, M.D.Tulsa, OK 741331508958810
  5. Robert HoggTulsa, OK 741331518406032
  6. Bradley McClure, MDTulsa, OK 741331790755916
  7. Seth Migdalski, MDTulsa, OK 741331659734283
  8. Hazem Sokkar, M.D.Tulsa, OK 741331780659078

Common questions

What is Mark D. Gage, DO's NPI number?

Mark D. Gage, DO's National Provider Identifier (NPI) is 1972544138, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark D. Gage, DO located?

The NPPES record lists a practice address at 6915 E 106TH St, Tulsa, OK, 74133. Phone: (918) 671-9274. Providers update this record themselves, so call before visiting.

How can I verify Mark D. Gage, DO's license?

NPPES lists Oklahoma license number 3028, 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 Mark D. Gage, DO prescribe under Medicare Part D?

In 2024, Mark D. Gage, DO had 219 Medicare Part D claims for 75 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.