NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1124099429 MD
Verify on CMS → Ashok Chaddah, MD
Nephrology Physician in Indiana, 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 10,569 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
488
Medicare Part D claims · 69 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ashok Chaddah, MD filed 488 Medicare Part D claims in 2023 as a Nephrology Physician in Indiana, Pennsylvania, prescribing 93% generic.
- 488
- Part D claims, 2023
- 93%
- generic prescribing
- ≥62nd
- 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.
Ashok Chaddah, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
488 ≥ 62nd percentile 62% of 1,370,886 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 · 2023
◑
Board-eligible specialty (heuristic, not verified)
Ashok Chaddah, 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 Ashok Chaddah, MD?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
488 66% 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).
Ashok Chaddah, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 841 HOSPITAL RD, Indiana, PA, 15701, with a listed phone of (724) 349-8636. NPI 1124099429 was issued on 01/27/2006.
Medicare Part D records for calendar year 2023 show 488 prescription claims written by this provider, covering 69 Medicare beneficiaries and totaling roughly $36K in drug spend, split 7% brand-name and 93% generic by claim count.
Nephrology Physician is a mid-sized specialty nationwide, with 10,569 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 | 1124099429 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/27/2006 |
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 Ashok Chaddah, MD. To verify Ashok Chaddah, MD'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.
Brand vs generic prescribing mix · Generic-heavy
Ashok Chaddah, MD - brand share 7.0%
Nephrology Physician average
7% brand-name claims vs 93% generic, on 488 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.
488
Total Claims
$36K
Total Drug Cost
69
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 788
- Total Day Supply
- 23,222
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $10K
- Generic Drug Cost
- $26K
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 3.91
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ashok Chaddah, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Calcitriol
Calcitriol
120 claims
- Furosemide
Furosemide
96 claims
- Calcium Acetate
Calcium Acetate
48 claims
- Midodrine Hcl 32
Midodrine Hcl
32 claims
- Sevelamer Carbonate 24
Sevelamer Carbonate
24 claims
- Potassium Chloride 20
Potassium Chloride
20 claims
- Amlodipine Besylate 19
Amlodipine Besylate
19 claims
- Lisinopril 19
Lisinopril
19 claims
| Drug | Claims |
|---|---|
| Calcitriol | 120 |
| Furosemide | 96 |
| Calcium Acetate | 48 |
| Midodrine Hcl | 32 |
| Sevelamer Carbonate | 24 |
| Potassium Chloride | 20 |
| Amlodipine Besylate | 19 |
| Lisinopril | 19 |
| Losartan Potassium | 19 |
| Metoprolol Succinate | 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 Ashok Chaddah, MD fits within the Nephrology Physician landscape nationally.
10,569
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Ashok Chaddah, MD's 488 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 Chaddah.
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 Ashok Chaddah, MD's specialty? ▼
Ashok Chaddah, MD specializes in Nephrology Physician and practices in Indiana, Pennsylvania. Credentials: MD.
How much does Ashok Chaddah, MD prescribe under Medicare Part D? ▼
In 2023, Ashok Chaddah, MD wrote 488 Medicare Part D claims totaling $36K in drug costs for 69 beneficiaries.
Where is Ashok Chaddah, MD located? ▼
Ashok Chaddah, MD is located at 841 HOSPITAL RD, Indiana, PA, 15701. Phone: (724) 349-8636.
What is Ashok Chaddah, MD's NPI number? ▼
Ashok Chaddah, MD's National Provider Identifier (NPI) is 1124099429, issued on 01/27/2006.
Does Ashok Chaddah, MD prescribe more brand-name or generic drugs? ▼
Ashok Chaddah, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $10K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,569 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 Ashok Chaddah, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ashok Chaddah, MD's most frequently prescribed drugs include Calcitriol, Furosemide, Calcium Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ashok Chaddah, MD accept Medicare? ▼
Ashok Chaddah, MD appears in CMS Medicare data with 488 Part D claims and 69 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ashok Chaddah, MD's credentials? ▼
Ashok Chaddah, MD's NPI is 1124099429 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.
- 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
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 May 2026.