Mary Z. Baker, MD
Endocrinology, Diabetes & Metabolism Physician · Oklahoma City, OK
Mary Z. Baker, MD is an endocrinology, diabetes & metabolism physician with a practice address in Oklahoma City, Oklahoma, and NPI 1942278163, issued on Mar 14, 2006. Check the license (Oklahoma 14466, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Mary Z. Baker
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 14466 OK
Self-reported in NPPES; status is on the state search - Practice location
- 1000 N Lincoln Blvd, Oklahoma City, OK 73104
- Phone
- (405) 271-1000
- Enumerated
- Mar 14, 2006
- Record last updated
- Mar 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (405) 271-1002
- Medicare enrollment
- Enrolled (PECOS I20060110001142); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 73 in Oklahoma → Look up another NPI →
Also registered at 1000 N Lincoln Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lacey BixlerMetabolic Nutrition Registered Dietitian1962783290
- Betty Bowers, M.D.Anesthesiology Physician1952385908
Verify Mary Z. Baker 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 14466Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,049 Medicare Part D claims for 234 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims. 62 claims were for opioids.
Most prescribed
- Ozempic210 claims
- Levothyroxine Sodium184 claims
- Metformin Hcl76 claims
- Jardiance74 claims
- Mounjaro66 claims
- Lantus Solostar53 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 practice group's MIPS final score for 2023 (Medicare payment program): 71.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $72.50
1 payment: food and beverage; the largest payer was Amgen Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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 one group practice
- OU Health Partners IncOklahoma City, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Z. Baker among 73 endocrinology, diabetes & metabolism physician records in Oklahoma
Mary Z. Baker, MD is one of 73 endocrinology, diabetes & metabolism physician records with a practice address in Oklahoma. 79% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1982 · median 2006 among the 44 with a school on file
- Record last updated2011 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Oklahoma
There are 73 endocrinology, diabetes & metabolism physician records in Oklahoma.
All 73 in Oklahoma → Every provider in Oklahoma City → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Neha Bang, DOOklahoma City, OK 731041144804121
- Emily DeciccoOklahoma City, OK 731041295315315
- Yahya El Soufi, MDOklahoma City, OK 731041265182703
- Niyaz Gosmanov, MDOklahoma City, OK 731041962586446
- Albina Gosmanova, M.D.Oklahoma City, OK 731041366595035
- Itivrita Goyal, M.D.Oklahoma City, OK 731041225425747
- Venkataraman Kalyanaraman, MDOklahoma City, OK 731041598813016
- Jonea Lim, MDOklahoma City, OK 731041285774331
Common questions
What is Mary Z. Baker, MD's NPI number?
Mary Z. Baker, MD's National Provider Identifier (NPI) is 1942278163, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Z. Baker, MD located?
The NPPES record lists a practice address at 1000 N Lincoln Blvd, Oklahoma City, OK, 73104. Phone: (405) 271-1000. Providers update this record themselves, so call before visiting.
How can I verify Mary Z. Baker, MD's license?
NPPES lists Oklahoma license number 14466, 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 Z. Baker, MD prescribe under Medicare Part D?
In 2024, Mary Z. Baker, MD had 2,049 Medicare Part D claims for 234 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Mary Z. Baker, MD's MIPS final score?
The 2023 MIPS final score is 71.7 of 100, reported for the practice group. 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.