NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1568852838 MD
Verify on CMS → Arun Kottarathara, MD
Nephrology Physician in Wilmington, Delaware.
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
102
Medicare Part D claims · 39 beneficiaries · Nephrology Physician avg: 2K
What the federal data shows
Arun Kottarathara, MD filed 102 Medicare Part D claims in 2024 as a Nephrology Physician in Wilmington, Delaware.
- 102
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥34th
- 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 Arun Kottarathara, 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 1568852838), first enumerated 01/26/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 102 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
5 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1568852838 · Nephrology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1568852838
- ENUM-MID 2015
- TAX-MID 11K Nephrology Physician
- RX-LIGHT 102
- BOOK-THIN 43 in Delaware
- PHOTO-ENUM Posan Limbu · 2015
Arun Kottarathara, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
102 ≥ 34th percentile 34% 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)
Arun Kottarathara, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 5 hospital affiliations - 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 Arun Kottarathara, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
102 93% vs specialty avg
Specialty distribution in Delaware
How Nephrology Physician compares to other specialties among Delaware 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 | 1568852838 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/26/2015 |
Hospital and facility affiliations
Facilities where Arun Kottarathara, MD 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.
According to CMS billing records, Arun Kottarathara, MD is affiliated with 5 Medicare-billing facilities across 4 states, 1 of which carry a CMS Hospital overall star rating.
T J Samson Community Hospital
★★★☆☆ 3/5
Glasgow, KY
Acute Care Hospitals
CMS CCN: 180017
Froedtert Manitowoc Medical Group, LLC
Sheboygan, WI
Knoxville Kidney Center, PLLC
Knoxville, TN
Osf Multi-Specialty Group
Swedesboro, NJ
Thedacare, Incorporated
Appleton, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
102
Total Claims
$50K
Total Drug Cost
39
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 183.333
- Total Day Supply
- 5,379
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 76.3 years
- Avg HCC Risk Score
- 2.56
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Furosemide | 17 |
| Losartan Potassium | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Arun Kottarathara, 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
Arun Kottarathara, MD's 102 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 Kottarathara, both outside Delaware so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nephrology Physician Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Kottarathara.
One of 43 Nephrology Physician providers enrolled in Delaware, 5 are shown here.
Dr. Feroz Abubacker Kaniyamparambil
M.D
Newark, DE
Dr. Afsheen Afzal
MD
Lewes, DE
Dr. Brajesh Agarwal
M.D.
Wilmington, DE
Dr. Piyaporn Apivatanagul
MD
Newark, DE
Dr. Manmeet Brar
MD
Dover, DE
Compare Nephrology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Arun Kottarathara, MD's specialty? ▼
Arun Kottarathara, MD specializes in Nephrology Physician and practices in Wilmington, Delaware. Credentials: MD.
How much does Arun Kottarathara, MD prescribe under Medicare Part D? ▼
In 2024, Arun Kottarathara, MD wrote 102 Medicare Part D claims totaling $50K in drug costs for 39 beneficiaries.
Where is Arun Kottarathara, MD located? ▼
Arun Kottarathara, MD is located at 2006 LIMESTONE RD, Wilmington, DE, 19808. Phone: (302) 355-2383.
What is Arun Kottarathara, MD's NPI number? ▼
Arun Kottarathara, MD's National Provider Identifier (NPI) is 1568852838, issued on 01/26/2015.
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 Arun Kottarathara, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Arun Kottarathara, MD's most frequently prescribed drugs include Furosemide, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Arun Kottarathara, MD accept Medicare? ▼
Arun Kottarathara, MD appears in CMS Medicare data with 102 Part D claims and 39 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arun Kottarathara, MD's credentials? ▼
Arun Kottarathara, MD's NPI is 1568852838 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.