2026 NPPES data Physician Assistant NPI 1841615655 PA-C
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DOLORES GREWAL, PA-C

Physician Assistant in PRINCETON, 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
131
Medicare Part D claims · 55 beneficiaries · Physician Assistant avg: 790

What the federal data shows

DOLORES GREWAL, PA-C filed 131 Medicare Part D claims in 2023 as a Physician Assistant in PRINCETON, New Jersey.

131
Part D claims, 2023

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.

DOLORES GREWAL, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

131 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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

What does the federal data show about DOLORES GREWAL, PA-C?

Quality data not reported

NPI registry status

Active

Issued 03/03/2014

NPI 1841615655

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

131 83% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in New Jersey

How Physician Assistant compares to other specialties among New Jersey providers

New Jersey providers

Physician Assistant share within New Jersey

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within New Jersey

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Physician Assistant) — 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).

DOLORES GREWAL, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 325 PRINCETON AVE, PRINCETON, NJ, 08540, with a listed phone of (609) 921-7411. NPI 1841615655 was issued on 03/03/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GREWAL 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 131 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $5K in drug spend, with an opioid prescribing rate of 29.8%. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

325 PRINCETON AVE
PRINCETON, NJ 08540

Provider Details

NPI 1841615655
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 03/03/2014

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

131
Total Claims
$5K
Total Drug Cost
55
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
136
Total Day Supply
1,936
Generic Drug Cost
$4K
Opioid Claims
39 (29.8% rate)
Antibiotic Claims
12

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
0.94
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What DOLORES GREWAL, PA-C 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
Oxycodone Hcl
34
Naloxone Hcl
23
Lansoprazole
16
Celecoxib
12

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

Physician Assistant Overview

How DOLORES GREWAL, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

DOLORES GREWAL, PA-C's 131 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in New Jersey

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

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

Frequently Asked Questions

What is DOLORES GREWAL, PA-C's specialty?
DOLORES GREWAL, PA-C specializes in Physician Assistant and practices in PRINCETON, New Jersey. Credentials: PA-C.
How much does DOLORES GREWAL, PA-C prescribe under Medicare Part D?
In 2023, DOLORES GREWAL, PA-C wrote 131 Medicare Part D claims totaling $5K in drug costs for 55 beneficiaries.
Where is DOLORES GREWAL, PA-C located?
DOLORES GREWAL, PA-C is located at 325 PRINCETON AVE, PRINCETON, NJ, 08540. Phone: (609) 921-7411.
What is DOLORES GREWAL, PA-C's NPI number?
DOLORES GREWAL, PA-C's National Provider Identifier (NPI) is 1841615655, issued on 03/03/2014.
Does DOLORES GREWAL, PA-C prescribe opioids?
Yes, DOLORES GREWAL, PA-C had 39 opioid claims in 2023 with an opioid prescribing rate of 29.8%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does DOLORES GREWAL, PA-C prescribe most often?
Based on 2023 Medicare Part D data, DOLORES GREWAL, PA-C's most frequently prescribed drugs include Oxycodone Hcl, Naloxone Hcl, Lansoprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DOLORES GREWAL, PA-C accept Medicare?
DOLORES GREWAL, PA-C appears in CMS Medicare data with 131 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DOLORES GREWAL, PA-C's credentials?
DOLORES GREWAL, PA-C's NPI is 1841615655 with credentials PA-C. 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