2026 NPPES data Nephrology Physician NPI 1689612335 M.D.
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INDERPAL CHADHA, M.D.

Nephrology Physician in NEWARK, New Jersey. 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
913
Medicare Part D claims · 108 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
30/100
▼ 53 pts below national avg 83.1 · [object Object]
Industry payments
$398.79
17 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: INDERPAL CHADHA, M.D. is a Nephrology Physician ([object Object]) practicing in NEWARK, New Jersey with a Medicare Part D prescribing footprint of 913 claims across 108 beneficiaries — 12% brand-name prescribing . Their CMS MIPS Final Score of 30/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $398.79 across 17 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: INDERPAL CHADHA, M.D. reported a CMS MIPS final score of 30 out of 100, below the 83.1 national average, and filed 913 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

INDERPAL CHADHA, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

INDERPAL CHADHA, M.D. at a glance

Below national average

NPI registry status

Active

Issued 06/03/2006

NPI 1689612335

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

913 37% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

30/100 53.099999999999994% pts

Below average band

vs 83.1 national avg

Specialty distribution in New Jersey

How Nephrology Physician compares to other specialties among New Jersey providers

New Jersey providers

Nephrology Physician share within New Jersey

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

Medicare quality performance — MIPS

INDERPAL CHADHA, M.D.'s 2023 MIPS final score plotted against the Nephrology Physician national average

Below national average
MIPS Final Score
30/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 30/100 vs national avg 83.1

0%100%National avg83%30%
MIPS final score (Nephrology Physician) — 30/100 vs national avg 83.1

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).

INDERPAL CHADHA, M.D. is a Nephrology Physician provider practicing in NEWARK, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1689612335. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

INDERPAL CHADHA, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 539 BLOOMFIELD AVE STE 1, NEWARK, NJ, 07107, with a listed phone of (973) 566-9900. NPI 1689612335 was issued on 06/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHADHA 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 913 prescription claims written by this provider, covering 108 Medicare beneficiaries and totaling roughly $268K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 7.3%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 30/100 for the 2023 performance year (Quality 0, Cost 100), compared with the national average of 83.1.

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

539 BLOOMFIELD AVE STE 1
NEWARK, NJ 07107

Provider Details

NPI 1689612335
Specialty Nephrology Physician
Credentials M.D.
Gender Male
NPI Issued 06/03/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

30
Final Score
Avg: 83.1
0
Quality
100
Cost

Reporting: Individual

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for INDERPAL CHADHA, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$399

Largest payer

Amgen Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

INDERPAL CHADHA, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 913 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.

913
Total Claims
$268K
Total Drug Cost
108
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,801
Total Day Supply
51,059
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$226K
Generic Drug Cost
$41K
Opioid Claims
67 (7.3% rate)
Antibiotic Claims
37

Patient Demographics

Average Patient Age
67.7 years
Avg HCC Risk Score
5.57
Gender Split
51% female / 49% male
Age Distribution
<65: 30, 65-74: 46, 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.

Drug Claims
Sevelamer Carbonate
93
Amlodipine Besylate
63
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
59
Furosemide
42
Atorvastatin Calcium
35
Zolpidem Tartrate
31
Lidocaine-Prilocaine
Lidocaine/Prilocaine
26
Velphoro
Sucroferric Oxyhydroxide
26
Metoprolol Succinate
23
Azithromycin
19

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nephrology Physician Overview

How INDERPAL CHADHA, 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

INDERPAL CHADHA, M.D.'s 913 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as CHADHA.

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

Frequently Asked Questions

What is INDERPAL CHADHA, M.D.'s specialty?
INDERPAL CHADHA, M.D. specializes in Nephrology Physician and practices in NEWARK, New Jersey. Credentials: M.D..
How much does INDERPAL CHADHA, M.D. prescribe under Medicare Part D?
In 2023, INDERPAL CHADHA, M.D. wrote 913 Medicare Part D claims totaling $268K in drug costs for 108 beneficiaries.
What is INDERPAL CHADHA, M.D.'s Medicare quality score?
INDERPAL CHADHA, M.D. has a CMS MIPS Final Score of 30/100 (Quality: 0, Cost: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is INDERPAL CHADHA, M.D. located?
INDERPAL CHADHA, M.D. is located at 539 BLOOMFIELD AVE STE 1, NEWARK, NJ, 07107. Phone: (973) 566-9900.
What is INDERPAL CHADHA, M.D.'s NPI number?
INDERPAL CHADHA, M.D.'s National Provider Identifier (NPI) is 1689612335, issued on 06/03/2006.
Does INDERPAL CHADHA, M.D. prescribe more brand-name or generic drugs?
INDERPAL CHADHA, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $226K in brand drug costs.
Does INDERPAL CHADHA, M.D. prescribe opioids?
Yes, INDERPAL CHADHA, M.D. had 67 opioid claims in 2023 with an opioid prescribing rate of 7.3%.
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 INDERPAL CHADHA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, INDERPAL CHADHA, M.D.'s most frequently prescribed drugs include Sevelamer Carbonate, Amlodipine Besylate, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does INDERPAL CHADHA, M.D. accept Medicare?
INDERPAL CHADHA, M.D. appears in CMS Medicare data with 913 Part D claims and 108 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify INDERPAL CHADHA, M.D.'s credentials?
INDERPAL CHADHA, M.D.'s NPI is 1689612335 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

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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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