2026 NPPES data Rheumatology Physician NPI 1598100299 MD
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ELENA GKROUZMAN, MD

Rheumatology Physician in WORCESTER, Massachusetts. 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
852
Medicare Part D claims · 179 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
97.0218/100
▲ 14 pts above national avg 83.1 · [object Object]
Industry payments
$133.89
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ELENA GKROUZMAN, MD is a Rheumatology Physician ([object Object]) practicing in WORCESTER, Massachusetts with a Medicare Part D prescribing footprint of 852 claims across 179 beneficiaries . Their CMS MIPS Final Score of 97.0218/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $133.89 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ELENA GKROUZMAN, MD reported a CMS MIPS final score of 97.0218 out of 100, above the 83.1 national average, and filed 852 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)

ELENA GKROUZMAN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ELENA GKROUZMAN, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/08/2013

NPI 1598100299

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

852 59% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

MIPS final score

97.0218/100 13.921800000000005% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Massachusetts

How Rheumatology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Rheumatology Physician share within Massachusetts

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

Medicare quality performance — MIPS

ELENA GKROUZMAN, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average

High performer (top quartile)
MIPS Final Score
97.0218/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Rheumatology Physician) — 97.0218/100 vs national avg 83.1

0%100%National avg83%97%
MIPS final score (Rheumatology Physician) — 97.0218/100 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).

ELENA GKROUZMAN, MD is a Rheumatology Physician provider practicing in WORCESTER, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1598100299. 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.

ELENA GKROUZMAN, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 119 BELMONT ST, WORCESTER, MA, 01605, with a listed phone of (508) 334-5224. NPI 1598100299 was issued on 05/08/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GKROUZMAN 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 852 prescription claims written by this provider, covering 179 Medicare beneficiaries and totaling roughly $606K in drug spend, with an opioid prescribing rate of 3.9%. 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 97.0218/100 for the 2023 performance year (Quality 78.0983), compared with the national average of 83.1.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

119 BELMONT ST
WORCESTER, MA 01605

Provider Details

NPI 1598100299
Specialty Rheumatology Physician
Credentials MD
Gender Female
NPI Issued 05/08/2013

CMS Quality Score (MIPS)

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

97.0218
Final Score
Avg: 83.1
78.0983
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where ELENA GKROUZMAN, MD 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.

UMASS MEMORIAL MEDICAL GROUP INC
WORCESTER, MA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 ELENA GKROUZMAN, MD. Source: openpaymentsdata.cms.gov.

Total received

$134

Largest payer

Aurinia Pharma U.S., 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.

License & disciplinary context — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to ELENA GKROUZMAN, MD. To verify ELENA GKROUZMAN, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts 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.

852
Total Claims
$606K
Total Drug Cost
179
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,750
Total Day Supply
51,368
Generic Drug Cost
$48K
Opioid Claims
33 (3.9% rate)

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
1.55
Gender Split
61% female / 39% male
Age Distribution
<65: 33, 65-74: 79, 75-84: 51, 85+: 16

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Prednisone
125
Hydroxychloroquine Sulfate
119
Allopurinol
95
Methotrexate
Methotrexate Sodium
84
Alendronate Sodium
37
Colchicine
37
Gabapentin
35
Celecoxib
26
Duloxetine Hcl
25
Leflunomide
22

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

Rheumatology Physician Overview

How ELENA GKROUZMAN, MD fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

ELENA GKROUZMAN, MD's 852 claims are below the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as GKROUZMAN.

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

Frequently Asked Questions

What is ELENA GKROUZMAN, MD's specialty?
ELENA GKROUZMAN, MD specializes in Rheumatology Physician and practices in WORCESTER, Massachusetts. Credentials: MD.
How much does ELENA GKROUZMAN, MD prescribe under Medicare Part D?
In 2023, ELENA GKROUZMAN, MD wrote 852 Medicare Part D claims totaling $606K in drug costs for 179 beneficiaries.
What is ELENA GKROUZMAN, MD's Medicare quality score?
ELENA GKROUZMAN, MD has a CMS MIPS Final Score of 97.0218/100 (Quality: 78.0983). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ELENA GKROUZMAN, MD located?
ELENA GKROUZMAN, MD is located at 119 BELMONT ST, WORCESTER, MA, 01605. Phone: (508) 334-5224.
What is ELENA GKROUZMAN, MD's NPI number?
ELENA GKROUZMAN, MD's National Provider Identifier (NPI) is 1598100299, issued on 05/08/2013.
Does ELENA GKROUZMAN, MD prescribe opioids?
Yes, ELENA GKROUZMAN, MD had 33 opioid claims in 2023 with an opioid prescribing rate of 3.9%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does ELENA GKROUZMAN, MD prescribe most often?
Based on 2023 Medicare Part D data, ELENA GKROUZMAN, MD's most frequently prescribed drugs include Prednisone, Hydroxychloroquine Sulfate, Allopurinol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELENA GKROUZMAN, MD accept Medicare?
ELENA GKROUZMAN, MD appears in CMS Medicare data with 852 Part D claims and 179 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELENA GKROUZMAN, MD's credentials?
ELENA GKROUZMAN, MD's NPI is 1598100299 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.
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