NPPES file of Aug 9, 2026

Melissa Ann Dietz, M.D.

Obstetrics & Gynecology Physician · Tulsa, OK

Melissa Ann Dietz, M.D. is an obstetrics & gynecology physician with a practice address in Tulsa, Oklahoma, and NPI 1558581116, issued on Apr 26, 2007. Check the license (Oklahoma 24521, 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
1558581116
Name
Melissa Ann Dietz
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
24521 OK
Self-reported in NPPES; status is on the state search
Practice location
1919 S Wheeling Ave Ste 504, Tulsa, OK 74104
Phone
(918) 301-2505
Enumerated
Apr 26, 2007
Record last updated
Jul 21, 2025
Medicaid IDs
200125470A OK
200567150A OK
Medicare enrollment
Enrolled (PECOS I20090916000170); may accept Medicare assignment
Medical or professional school
University Of Arkansas College Of Medicine, 2005
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 1919 S Wheeling Ave Ste 504

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

  1. Hannah Keylada, APRNNurse Practitioner1225833569

Verify Melissa Ann Dietz 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 24521
    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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22% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

202 Medicare Part D claims for 44 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. Melissa Dietz202
  2. Specialty average165

Most prescribed

  1. Estradiol58 claims
  2. Progesterone23 claims
  3. Premarin15 claims
  4. Dotti14 claims
  5. Norethindrone-E.Estradiol-Iron13 claims
  6. Myrbetriq12 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: $601.24

23 payments; by number, the most common kind was food and beverage; the largest payer was Pharmacosmos Therapeutics Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Melissa Dietz$601.24
  2. Specialty average$1,030.61

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

  1. St. John Physicians, Inc.Tulsa, OK

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

Melissa Ann Dietz among 438 obstetrics & gynecology physician records in Oklahoma

Melissa Ann Dietz, M.D. is one of 438 obstetrics & gynecology physician records with a practice address in Oklahoma. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 50% of them.

  • NPI issued2007 · 50% of these records are older, 42% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2005 · median 2006 among the 267 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Oklahoma

There are 438 obstetrics & gynecology physician records in Oklahoma.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. John Beal, DOTulsa, OK 741041457329815
  2. Michelle Brotherton, MDTulsa, OK 741041285622464
  3. Grant Cox, M.D.Tulsa, OK 741041366532871
  4. Jennifer Donnelly, M.D.Tulsa, OK 741041316037849
  5. Lynn Frame, MDTulsa, OK 741041871562447
  6. Paul Gehring, M.D.Tulsa, OK 741041013007525
  7. Marsha Howerton Engles, MDTulsa, OK 741041790720456
  8. Lori Hubbard, MDTulsa, OK 741041184739328

Common questions

What is Melissa Ann Dietz, M.D.'s NPI number?

Melissa Ann Dietz, M.D.'s National Provider Identifier (NPI) is 1558581116, issued on Apr 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Melissa Ann Dietz, M.D. located?

The NPPES record lists a practice address at 1919 S Wheeling Ave Ste 504, Tulsa, OK, 74104. Phone: (918) 301-2505. Providers update this record themselves, so call before visiting.

How can I verify Melissa Ann Dietz, M.D.'s license?

NPPES lists Oklahoma license number 24521, 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 Melissa Ann Dietz, M.D. prescribe under Medicare Part D?

In 2024, Melissa Ann Dietz, M.D. had 202 Medicare Part D claims for 44 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.