NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1447231311 DO
Verify on CMS → James Madison, DO
Nephrology Physician in Tahlequah, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,806 in Nephrology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
379
Medicare Part D claims · 174 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$13.56
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
James Madison, DO filed 379 Medicare Part D claims in 2024 as a Nephrology Physician in Tahlequah, Oklahoma, prescribing 92% generic.
- 379
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥56th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about James Madison, DO
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1447231311), first enumerated 11/08/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 379 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$13.56 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1447231311 · Nephrology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1447231311
- ENUM-LEGACY 2005
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 379
- BOOK-THIN 86 in Oklahoma
- PHOTO-ENUM Amir Memon · 2005
James Madison, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
379 ≥ 56th percentile 56% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
James Madison, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James Madison, DO?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
379 75% vs specialty avg
Specialty distribution in Oklahoma
How Nephrology Physician compares to other specialties among Oklahoma providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nephrology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1447231311 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 11/08/2005 |
Hospital and facility affiliations
Facilities where James Madison, DO bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Midpacific Hospitalists LLC
Kamuela, HI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for James Madison, DO. Source: openpaymentsdata.cms.gov.
Total received
$14
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
James Madison, DO - brand share 8.0%
Nephrology Physician average
8% brand-name claims vs 92% generic, on 379 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
379
Total Claims
$22K
Total Drug Cost
174
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 388.8
- Total Day Supply
- 7,640
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $19K
- Generic Drug Cost
- $3K
- Opioid Claims
- 21 (5.5% rate)
- Antibiotic Claims
- 107
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 1.82
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 15, 65-74: 60, 75-84: 67, 85+: 32
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What James Madison, DO prescribes most
Top Medicare Part D drugs by claim count, 2024
- Furosemide
Furosemide
32 claims
- Pantoprazole Sodium
Pantoprazole Sodium
30 claims
- Cefuroxime
Cefuroxime
26 claims
- Prednisone
Prednisone
21 claims
- Cefdinir
Cefdinir
18 claims
- Amlodipine Besylate
Amlodipine Besylate
17 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
16 claims
- Metoprolol Tartrate
Metoprolol Tartrate
15 claims
| Drug | Claims |
|---|---|
| Furosemide | 32 |
| Pantoprazole Sodium | 30 |
| Cefuroxime Cefuroxime Axetil | 26 |
| Prednisone | 21 |
| Cefdinir | 18 |
| Amlodipine Besylate | 17 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 16 |
| Metoprolol Tartrate | 15 |
| Atorvastatin Calcium | 12 |
| Cephalexin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How James Madison, DO fits within the Nephrology Physician landscape nationally.
10,806
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,511
Avg Claims per Provider
James Madison, DO's 379 claims are below the specialty average of 1,511.
Nationwide Nephrology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Madison, both outside Oklahoma so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Madison.
One of 86 Nephrology Physician providers enrolled in Oklahoma, 5 are shown here.
Dr. Muhammad Afzal
M.D.
Tulsa, OK
Dr. Syed Afzal
MD
Lawton, OK
Dr. Sunil Agrawal
MD
Tulsa, OK
Dr. Suhas Agte
M D
Lawton, OK
Dr. Zubair Ahmad
M.D.
Tulsa, OK
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is James Madison, DO's specialty? ▼
James Madison, DO specializes in Nephrology Physician and practices in Tahlequah, Oklahoma. Credentials: DO.
How much does James Madison, DO prescribe under Medicare Part D? ▼
In 2024, James Madison, DO wrote 379 Medicare Part D claims totaling $22K in drug costs for 174 beneficiaries.
Where is James Madison, DO located? ▼
James Madison, DO is located at 1500 E DOWNING #102, Tahlequah, OK, 74464. Phone: (918) 207-1189.
What is James Madison, DO's NPI number? ▼
James Madison, DO's National Provider Identifier (NPI) is 1447231311, issued on 11/08/2005.
Does James Madison, DO prescribe more brand-name or generic drugs? ▼
James Madison, DO's prescribing is 8% brand-name and 92% generic drugs by claim count, with $19K in brand drug costs.
Does James Madison, DO prescribe opioids? ▼
Yes, James Madison, DO had 21 opioid claims in 2024 with an opioid prescribing rate of 5.5%.
How many Nephrology Physician providers are there in the US? ▼
There are 10,806 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,511 Medicare Part D claims per year.
What drugs does James Madison, DO prescribe most often? ▼
Based on 2024 Medicare Part D data, James Madison, DO's most frequently prescribed drugs include Furosemide, Pantoprazole Sodium, Cefuroxime. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Madison, DO accept Medicare? ▼
James Madison, DO appears in CMS Medicare data with 379 Part D claims and 174 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Madison, DO's credentials? ▼
James Madison, DO's NPI is 1447231311 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.