James Regis Madison, DO
Nephrology Physician · Tahlequah, OK
James Regis Madison, DO is a nephrology physician with a practice address in Tahlequah, Oklahoma, and NPI 1447231311, issued on Nov 8, 2005. Check the license (Oklahoma 4485, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- James Regis Madison
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 4485 OK
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Downing #102, Tahlequah, OK 74464
- Phone
- (918) 207-1189
- Enumerated
- Nov 8, 2005
- Record last updated
- May 13, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (918) 207-1160
- Medicaid ID
- 200114250A OK
- Medicare enrollment
- Enrolled (PECOS I20061025000584); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Physicians And Surgeons, 2001
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 112 in Oklahoma → Look up another NPI →
Verify James Regis Madison 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 4485Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average nephrology physician in 2024
379 Medicare Part D claims for 174 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 21 claims were for opioids.
Most prescribed
- Furosemide32 claims
- Pantoprazole Sodium30 claims
- Cefuroxime26 claims
- Prednisone21 claims
- Cefdinir18 claims
- Amlodipine Besylate17 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: $13.56
1 payment: food and beverage; the largest payer was Abbvie Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Midpacific Hospitalists LLCKamuela, HI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Regis Madison among 112 nephrology physician records in Oklahoma
James Regis Madison, DO is one of 112 nephrology physician records with a practice address in Oklahoma. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2001 · median 2003 among the 87 with a school on file
- Record last updated2010 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Oklahoma
There are 112 nephrology physician records in Oklahoma.
All 112 in Oklahoma → Every provider in Tahlequah → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Bilal Aziz, MDTahlequah, OK 744641063725901
- Paul Dreyer, MDMcAlester, OK 745011194855528
- Srinivas Mahesh Katta, MDMuskogee, OK 744011841428752
- Muhammad Afzal, M.D.Tulsa, OK 741361417096629
- Tariq AlyamaniTulsa, OK 741361255941589
- Ayesha AnwaarTulsa, OK 741361487007449
- Reza Azadi, D.O.Tulsa, OK 741361932300472
- Kevin Fu, MDTulsa, OK 741361376938167
Common questions
What is James Regis Madison, DO's NPI number?
James Regis Madison, DO's National Provider Identifier (NPI) is 1447231311, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Regis Madison, DO located?
The NPPES record lists a practice address at 1500 E Downing #102, Tahlequah, OK, 74464. Phone: (918) 207-1189. Providers update this record themselves, so call before visiting.
How can I verify James Regis Madison, DO's license?
NPPES lists Oklahoma license number 4485, 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 James Regis Madison, DO prescribe under Medicare Part D?
In 2024, James Regis Madison, DO had 379 Medicare Part D claims for 174 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.