NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1134272933 MD
Verify on CMS → Rajesh Kumar, MD
Nephrology Physician in Oklahoma City, 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 10,534 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
2K
Medicare Part D claims · 309 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
81/100
▼ 2 pts below national avg 83.1 · Above neutral
Industry payments
$1.4K
33 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Rajesh Kumar, MD reported a CMS MIPS final score of 81/100 - below the 83.1 national average - and filed 2,023 Medicare Part D claims in 2023.
- 81/100
- MIPS score · -2 vs avg
- 2K
- Part D claims, 2023
- 77%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Rajesh Kumar, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
81 36th percentile higher than 36% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Rajesh Kumar, MD sits
This provider among nephrology physician peers
Across the 2,476 nephrology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Rajesh Kumar, MD writes more Part D claims than 74% of them and scores higher on MIPS quality than 48% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one nephrology physician peer from a representative sample of 60; the gold marker is Rajesh Kumar, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Rajesh Kumar, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Rajesh Kumar, MD?
Near national averagePrimary specialty
Nephrology Physician
Medicare Part D claims
2,023 39% vs specialty avg
MIPS final score
81/100 2.1 pts vs avg
Specialty distribution in Oklahoma
How Nephrology Physician compares to other specialties among Oklahoma providers
Medicare quality performance, MIPS
Rajesh Kumar, MD's 2023 MIPS final score plotted against the Nephrology Physician national average
- MIPS Final Score
- 81/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Nephrology Physician) - 81/100 vs national avg 83.1
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).
Rajesh Kumar, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 608 NW 9TH ST STE 4106, Oklahoma City, OK, 73102, with a listed phone of (405) 272-8367. NPI 1134272933 was issued on 01/18/2007.
Medicare Part D records for calendar year 2023 show 2,023 prescription claims written by this provider, covering 309 Medicare beneficiaries and totaling roughly $687K in drug spend, split 23% brand-name and 77% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81/100 for the 2023 performance year (Quality 65.5), compared with the national average of 83.1.
Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1134272933 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/18/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
81.0276
Final Score
Avg: 83.1
65.5047
Quality
100
Promoting Interoperability
Reporting: Group practice
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 Rajesh Kumar, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.4K
Largest payer
Abbott Laboratories
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 · Typical
Rajesh Kumar, MD - brand share 23.0%
Nephrology Physician average
23% brand-name claims vs 77% generic, on 2,023 2023 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 2023.
2,023
Total Claims
$687K
Total Drug Cost
309
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,592
- Total Day Supply
- 136,673
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $549K
- Generic Drug Cost
- $138K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 70.8 years
- Avg HCC Risk Score
- 3.91
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 62, 65-74: 136, 75-84: 85, 85+: 26
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Rajesh Kumar, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Farxiga
Farxiga
261 claims
- Calcitriol
Calcitriol
205 claims
- Furosemide
Furosemide
173 claims
- Amlodipine Besylate
Amlodipine Besylate
163 claims
- Sevelamer Carbonate
Sevelamer Carbonate
125 claims
- Losartan Potassium
Losartan Potassium
117 claims
- Hydralazine Hcl
Hydralazine Hcl
114 claims
- Potassium Chloride 70
Potassium Chloride
70 claims
| Drug | Claims |
|---|---|
| Farxiga Dapagliflozin Propanediol | 261 |
| Calcitriol | 205 |
| Furosemide | 173 |
| Amlodipine Besylate | 163 |
| Sevelamer Carbonate | 125 |
| Losartan Potassium | 117 |
| Hydralazine Hcl | 114 |
| Potassium Chloride | 70 |
| Allopurinol | 67 |
| Veltassa Patiromer Calcium Sorbitex | 64 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Rajesh Kumar, MD fits within the Nephrology Physician landscape nationally.
10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Rajesh Kumar, MD's 2,023 claims are above the specialty average of 1,454.
Nearby Nephrology Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Kumar.
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 →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Oklahoma medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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How insurance networks affect your costs
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Frequently Asked Questions
What is Rajesh Kumar, MD's specialty? ▼
Rajesh Kumar, MD specializes in Nephrology Physician and practices in Oklahoma City, Oklahoma. Credentials: MD.
How much does Rajesh Kumar, MD prescribe under Medicare Part D? ▼
In 2023, Rajesh Kumar, MD wrote 2,023 Medicare Part D claims totaling $687K in drug costs for 309 beneficiaries.
What is Rajesh Kumar, MD's Medicare quality score? ▼
Rajesh Kumar, MD has a CMS MIPS Final Score of 81/100 (Quality: 65.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Rajesh Kumar, MD located? ▼
Rajesh Kumar, MD is located at 608 NW 9TH ST STE 4106, Oklahoma City, OK, 73102. Phone: (405) 272-8367.
What is Rajesh Kumar, MD's NPI number? ▼
Rajesh Kumar, MD's National Provider Identifier (NPI) is 1134272933, issued on 01/18/2007.
Does Rajesh Kumar, MD prescribe more brand-name or generic drugs? ▼
Rajesh Kumar, MD's prescribing is 23% brand-name and 77% generic drugs by claim count, with $549K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Rajesh Kumar, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Rajesh Kumar, MD's most frequently prescribed drugs include Farxiga, Calcitriol, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rajesh Kumar, MD accept Medicare? ▼
Rajesh Kumar, MD appears in CMS Medicare data with 2,023 Part D claims and 309 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rajesh Kumar, MD's credentials? ▼
Rajesh Kumar, MD's NPI is 1134272933 with credentials MD. 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.