2026 NPPES data Nephrology Physician NPI 1124099429 MD
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ASHOK CHADDAH, MD

Nephrology Physician in INDIANA, Pennsylvania. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
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

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

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 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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-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 reported

NPI registry status

Active

Issued 01/27/2006

NPI 1124099429

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

488 66% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in Pennsylvania

How Nephrology Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Nephrology Physician share within Pennsylvania

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Nephrology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nephrology Physician ABMS/AOA estimate

Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHADDAH most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

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. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

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

841 HOSPITAL RD
INDIANA, PA 15701

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%
Specialty average (est.)

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

10,534
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.

Compare Nephrology Physician nationally: see state-by-state distribution →

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 10,534 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 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

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