Mary Katlin Nixon, MD
Obstetrics & Gynecology Physician · Norman, OK
Mary Katlin Nixon, MD is an obstetrics & gynecology physician with a practice address in Norman, Oklahoma, and NPI 1003307935, issued on May 26, 2018. Check the license (Oklahoma 33858, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Mary Katlin Nixon
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 33858 OK
Self-reported in NPPES; status is on the state search - Practice location
- 3440 RC Luttrell Dr Ste 200, Norman, OK 73072
- Phone
- (405) 360-1264
- Enumerated
- May 26, 2018
- Record last updated
- Dec 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20220802002173); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 438 in Oklahoma → Look up another NPI →
Also registered at 3440 RC Luttrell Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robin Antosh, APRN-CNPFamily Nurse Practitioner1285293175
- Heather Bulloch, CNPFamily Nurse Practitioner1962985861
- Mary Chambers, MDObstetrics & Gynecology Physician1790737674
- Lilly Ferrell, A.R.N.P.Women's Health Nurse Practitioner1730416934
- Daphne Lashbrook, M.D.Specialist1538162979
- Leslie Ollar-Shoemake, D.O.Obstetrics & Gynecology Physician1740283175
Verify Mary Katlin Nixon 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 33858Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
48 Medicare Part D claims for 21 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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: $5,321.36
23 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Norman Regional Providers Specialty CareNorman, OK
- Variety Care, Inc.Oklahoma City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Katlin Nixon among 438 obstetrics & gynecology physician records in Oklahoma
Mary Katlin Nixon, MD 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2018 · 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.
All 438 in Oklahoma → Every provider in Norman → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Shelba Bethel, MDNorman, OK 730721780625756
- Lesa Bethel Mulligan, MDNorman, OK 730721255395984
- Kimberly Bowman, MDNorman, OK 730721346384542
- Mary Chambers, MDNorman, OK 730721790737674
- William Gideon, WILLIAMNorman, OK 730721902387475
- Rebecca Graham, D.ONorman, OK 730721245211846
- Jessica Hinojosa, D.O.Norman, OK 730721124311030
- Leslie Ollar-Shoemake, D.O.Norman, OK 730721740283175
Common questions
What is Mary Katlin Nixon, MD's NPI number?
Mary Katlin Nixon, MD's National Provider Identifier (NPI) is 1003307935, issued on May 26, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mary Katlin Nixon, MD located?
The NPPES record lists a practice address at 3440 RC Luttrell Dr Ste 200, Norman, OK, 73072. Phone: (405) 360-1264. Providers update this record themselves, so call before visiting.
How can I verify Mary Katlin Nixon, MD's license?
NPPES lists Oklahoma license number 33858, 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 Mary Katlin Nixon, MD prescribe under Medicare Part D?
In 2024, Mary Katlin Nixon, MD had 48 Medicare Part D claims for 21 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.