NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1235873118 MD
Verify on CMS → Sanjeeva Weerasinghe, MD
Nephrology Physician in Tucson, Arizona.
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
372
Medicare Part D claims · 108 beneficiaries · Nephrology Physician avg: 2K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Sanjeeva Weerasinghe, MD filed 372 Medicare Part D claims in 2024 as a Nephrology Physician in Tucson, Arizona, prescribing 87% generic.
- 372
- Part D claims, 2024
- 87%
- generic prescribing
- ≥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 Sanjeeva Weerasinghe, MD
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 1235873118), first enumerated 04/26/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 372 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
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 1235873118 · Nephrology Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1235873118
- ENUM-RECENT 2022
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 372
- BOOK-THIN 223 in Arizona
- PHOTO-ENUM Prachi Bansal, DO · 2022
Sanjeeva Weerasinghe, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
372 ≥ 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-eligible specialty (heuristic, not verified)
Sanjeeva Weerasinghe, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Sanjeeva Weerasinghe, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
372 75% vs specialty avg
Specialty distribution in Arizona
How Nephrology Physician compares to other specialties among Arizona 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 | 1235873118 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/26/2022 |
Brand vs generic prescribing mix · Typical
Sanjeeva Weerasinghe, MD - brand share 13.0%
Nephrology Physician average
13% brand-name claims vs 87% generic, on 372 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.
372
Total Claims
$37K
Total Drug Cost
108
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 955.633
- Total Day Supply
- 28,430
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $31K
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 1.48
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 20, 65-74: 58, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Sanjeeva Weerasinghe, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
33 claims
- Levothyroxine Sodium
Levothyroxine Sodium
25 claims
- Losartan Potassium
Losartan Potassium
25 claims
- Omeprazole
Omeprazole
19 claims
- Amlodipine Besylate
Amlodipine Besylate
17 claims
- Lisinopril
Lisinopril
14 claims
- Pantoprazole Sodium 12
Pantoprazole Sodium
12 claims
- Famotidine 11
Famotidine
11 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 33 |
| Levothyroxine Sodium | 25 |
| Losartan Potassium | 25 |
| Omeprazole | 19 |
| Amlodipine Besylate | 17 |
| Lisinopril | 14 |
| Pantoprazole Sodium | 12 |
| Famotidine | 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 Sanjeeva Weerasinghe, MD 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
Sanjeeva Weerasinghe, MD's 372 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 Weerasinghe, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Weerasinghe.
One of 223 Nephrology Physician providers enrolled in Arizona, 5 are shown here.
Dr. Abubakr Abdelaziz
M.D
Kingman, AZ
Dr. Sohail Abdul Salim
MD
Phoenix, AZ
Mhd Majed Abdul Wahab
Peoria, AZ
Dr. Manuel Abrante
M.D.
Mesa, AZ
Dr. Chirag Acharya
MD
Sun City, AZ
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sanjeeva Weerasinghe, MD's specialty? ▼
Sanjeeva Weerasinghe, MD specializes in Nephrology Physician and practices in Tucson, Arizona. Credentials: MD.
How much does Sanjeeva Weerasinghe, MD prescribe under Medicare Part D? ▼
In 2024, Sanjeeva Weerasinghe, MD wrote 372 Medicare Part D claims totaling $37K in drug costs for 108 beneficiaries.
Where is Sanjeeva Weerasinghe, MD located? ▼
Sanjeeva Weerasinghe, MD is located at 1501 N CAMPBELL AVE RM 6420R, Tucson, AZ, 85724. Phone: (520) 621-5227.
What is Sanjeeva Weerasinghe, MD's NPI number? ▼
Sanjeeva Weerasinghe, MD's National Provider Identifier (NPI) is 1235873118, issued on 04/26/2022.
Does Sanjeeva Weerasinghe, MD prescribe more brand-name or generic drugs? ▼
Sanjeeva Weerasinghe, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $31K in brand drug costs.
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 Sanjeeva Weerasinghe, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Sanjeeva Weerasinghe, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sanjeeva Weerasinghe, MD accept Medicare? ▼
Sanjeeva Weerasinghe, MD appears in CMS Medicare data with 372 Part D claims and 108 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sanjeeva Weerasinghe, MD's credentials? ▼
Sanjeeva Weerasinghe, MD's NPI is 1235873118 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 (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.