Joan T. Merrill, MD
Rheumatology Physician · Oklahoma City, OK
Joan T. Merrill, MD is a rheumatology physician with a practice address in Oklahoma City, Oklahoma, and NPI 1962471813, issued on Mar 14, 2006. Check the license (Oklahoma 22229, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Joan T. Merrill
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 22229 OK
Self-reported in NPPES; status is on the state search - Practice location
- 825 NE 13TH St, Oklahoma City, OK 73104
- Phone
- (405) 271-7805
- Enumerated
- Mar 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 69 in Oklahoma → Look up another NPI →
Also registered at 825 NE 13TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teresa AberlePhysician Assistant1588963953
- Cristina Arriens, MDRheumatology Physician1861618183
- Rodger McEver, M.D.Specialist1457570848
- Aikaterini Thanou, MDRheumatology Physician1316088016
- John Thompson, MDRadiation Oncology Physician1790708410
- Patricia Whitt, PA-CPhysician Assistant1104064294
Verify Joan T. Merrill 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 22229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $104,893.08
44 payments; by number, the most common kind was consulting fee; the largest payer was Merck Sharp & Dohme LLC. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Joan T. Merrill among 69 rheumatology physician records in Oklahoma
Joan T. Merrill, MD is one of 69 rheumatology physician records with a practice address in Oklahoma. 90% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 51% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2007 · 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 207RR0500X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Oklahoma
There are 69 rheumatology physician records in Oklahoma.
All 69 in Oklahoma → Every provider in Oklahoma City → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Cristina Arriens, MDOklahoma City, OK 731041861618183
- Nimrah Bader, MDOklahoma City, OK 731041447746417
- Eliza Chakravarty, MDOklahoma City, OK 731041396709663
- Roxana Florica, M.D.Oklahoma City, OK 731041467034884
- Mary Humphrey, M.D., PH.D.Oklahoma City, OK 731041235237728
- Judith James, MD, PHDOklahoma City, OK 731041871561068
- Matlock Jeffries, MDOklahoma City, OK 731041033439146
- Aemen Khakwani, MDOklahoma City, OK 731041780212100
Common questions
What is Joan T. Merrill, MD's NPI number?
Joan T. Merrill, MD's National Provider Identifier (NPI) is 1962471813, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joan T. Merrill, MD located?
The NPPES record lists a practice address at 825 NE 13TH St, Oklahoma City, OK, 73104. Phone: (405) 271-7805. Providers update this record themselves, so call before visiting.
How can I verify Joan T. Merrill, MD's license?
NPPES lists Oklahoma license number 22229, 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.
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.