NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1417202235 M.D
Verify on CMS → Yvonne El Kassis, M.D
Nephrology Physician in Philadelphia, Pennsylvania.
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
333
Medicare Part D claims · 101 beneficiaries · Nephrology Physician avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Yvonne El Kassis, M.D filed 333 Medicare Part D claims in 2023 as a Nephrology Physician in Philadelphia, Pennsylvania.
- 333
- Part D claims, 2023
- 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.
Yvonne El Kassis, M.D's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
333 Top 43% higher than 57% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Yvonne El Kassis, M.D practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 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 Yvonne El Kassis, M.D?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
333 77% vs specialty avg
Specialty distribution in Pennsylvania
How Nephrology Physician compares to other specialties among Pennsylvania 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).
Yvonne El Kassis, M.D appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D credentials at 3400 SPRUCE ST, Philadelphia, PA, 19104, with a listed phone of (215) 662-2638. NPI 1417202235 was issued on 07/18/2012.
Medicare Part D records for calendar year 2023 show 333 prescription claims written by this provider, covering 101 Medicare beneficiaries and totaling roughly $55K in drug spend.
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 | 1417202235 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D |
| Gender | Female |
| NPI Issued | 07/18/2012 |
Hospital and facility affiliations
Facilities where Yvonne El Kassis, M.D 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.
The University OF Chicago Medical Center
★★★★☆ 4/5
Chicago, IL
Acute Care Hospitals
CMS CCN: 140088
University OF Chicago
Chicago, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Pennsylvania PA-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Yvonne El Kassis, M.D. To verify Yvonne El Kassis, M.D's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
333
Total Claims
$55K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 679
- Total Day Supply
- 20,082
- Generic Drug Cost
- $35K
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 60.7 years
- Avg HCC Risk Score
- 5.31
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 49, 65-74: 44, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Yvonne El Kassis, M.D prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
52 claims
- Carvedilol
Carvedilol
50 claims
- Amlodipine Besylate
Amlodipine Besylate
27 claims
- Famotidine 18
Famotidine
18 claims
- Cinacalcet Hcl 17
Cinacalcet Hcl
17 claims
- Nifedipine Er 17
Nifedipine Er
17 claims
- Pravastatin Sodium 14
Pravastatin Sodium
14 claims
- Sulfamethoxazole-T… 14
Sulfamethoxazole-Trimethoprim
14 claims
| Drug | Claims |
|---|---|
| Prednisone | 52 |
| Carvedilol | 50 |
| Amlodipine Besylate | 27 |
| Famotidine | 18 |
| Cinacalcet Hcl | 17 |
| Nifedipine Er Nifedipine | 17 |
| Pravastatin Sodium | 14 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 14 |
| Atorvastatin Calcium | 12 |
| Pantoprazole Sodium | 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 Yvonne El Kassis, M.D 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
Yvonne El Kassis, M.D's 333 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as El Kassis.
Dr. Mohamed Anwar Abdus Samad
MD
York, PA
Dr. Samer Abou Chehade
M.D
Erie, PA
Blaise Abramovitz
Pittsburgh, PA
Dr. Parvaneh Abtahi
MD
Wyomissing, PA
Azza Abubaker
Philadelphia, PA
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 Pennsylvania 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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Frequently Asked Questions
What is Yvonne El Kassis, M.D's specialty? ▼
Yvonne El Kassis, M.D specializes in Nephrology Physician and practices in Philadelphia, Pennsylvania. Credentials: M.D.
How much does Yvonne El Kassis, M.D prescribe under Medicare Part D? ▼
In 2023, Yvonne El Kassis, M.D wrote 333 Medicare Part D claims totaling $55K in drug costs for 101 beneficiaries.
Where is Yvonne El Kassis, M.D located? ▼
Yvonne El Kassis, M.D is located at 3400 SPRUCE ST, Philadelphia, PA, 19104. Phone: (215) 662-2638.
What is Yvonne El Kassis, M.D's NPI number? ▼
Yvonne El Kassis, M.D's National Provider Identifier (NPI) is 1417202235, issued on 07/18/2012.
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 Yvonne El Kassis, M.D prescribe most often? ▼
Based on 2023 Medicare Part D data, Yvonne El Kassis, M.D's most frequently prescribed drugs include Prednisone, Carvedilol, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Yvonne El Kassis, M.D accept Medicare? ▼
Yvonne El Kassis, M.D appears in CMS Medicare data with 333 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Yvonne El Kassis, M.D's credentials? ▼
Yvonne El Kassis, M.D's NPI is 1417202235 with credentials M.D. 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.
- 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.