2026 NPPES data Internal Medicine Physician NPI 1184185902 DO
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ELIZABETH AHERNE, DO

Internal Medicine 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
2K
Medicare Part D claims · 289 beneficiaries · Internal Medicine Physician avg: 3K
Industry payments
$548
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ELIZABETH AHERNE, DO is a Internal Medicine Physician ([object Object]) practicing in WORCESTER, Massachusetts with a Medicare Part D prescribing footprint of 2K claims across 289 beneficiaries . Industry payments of $548 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ELIZABETH AHERNE, DO filed 1,535 Medicare Part D claims in 2023 across WORCESTER, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

ELIZABETH AHERNE, DO at a glance

Quality data not reported

NPI registry status

Active

Issued 03/26/2019

NPI 1184185902

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

1,535 43% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Massachusetts

How Internal Medicine Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Internal Medicine Physician share within Massachusetts

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal Medicine 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).

ELIZABETH AHERNE, DO is a Internal Medicine Physician provider practicing in WORCESTER, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1184185902. 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.

ELIZABETH AHERNE, DO appears in the CMS NPPES registry as a Internal Medicine Physician provider holding DO credentials at 55 LAKE AVE N, WORCESTER, MA, 01655, with a listed phone of (508) 334-2731. NPI 1184185902 was issued on 03/26/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AHERNE 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 1,535 prescription claims written by this provider, covering 289 Medicare beneficiaries and totaling roughly $105K in drug spend, with an opioid prescribing rate of 5.7%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

55 LAKE AVE N
WORCESTER, MA 01655

Provider Details

NPI 1184185902
Specialty Internal Medicine Physician
Credentials DO
Gender Female
NPI Issued 03/26/2019

Hospital and facility affiliations

Facilities where ELIZABETH AHERNE, DO 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 ELIZABETH AHERNE, DO. Source: openpaymentsdata.cms.gov.

Total received

$548

Largest payer

ROCHE DIABETES CARE, INC.

Most common payment type

Consulting Fee

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 ELIZABETH AHERNE, DO. To verify ELIZABETH AHERNE, DO'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.

1,535
Total Claims
$105K
Total Drug Cost
289
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,350
Total Day Supply
96,364
Generic Drug Cost
$34K
Opioid Claims
88 (5.7% rate)
Antibiotic Claims
37

Patient Demographics

Average Patient Age
70.8 years
Avg HCC Risk Score
1.37
Gender Split
67% female / 33% male
Age Distribution
<65: 51, 65-74: 127, 75-84: 90, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
134
Lisinopril
65
Omeprazole
53
Amlodipine Besylate
51
Rosuvastatin Calcium
50
Albuterol Sulfate Hfa
Albuterol Sulfate
47
Metoprolol Succinate
39
Levothyroxine Sodium
38
Losartan Potassium
36
Diclofenac Sodium
34

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

Internal Medicine Physician Overview

How ELIZABETH AHERNE, DO fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

ELIZABETH AHERNE, DO's 1,535 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Massachusetts

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELIZABETH AHERNE, DO's specialty?
ELIZABETH AHERNE, DO specializes in Internal Medicine Physician and practices in WORCESTER, Massachusetts. Credentials: DO.
How much does ELIZABETH AHERNE, DO prescribe under Medicare Part D?
In 2023, ELIZABETH AHERNE, DO wrote 1,535 Medicare Part D claims totaling $105K in drug costs for 289 beneficiaries.
Where is ELIZABETH AHERNE, DO located?
ELIZABETH AHERNE, DO is located at 55 LAKE AVE N, WORCESTER, MA, 01655. Phone: (508) 334-2731.
What is ELIZABETH AHERNE, DO's NPI number?
ELIZABETH AHERNE, DO's National Provider Identifier (NPI) is 1184185902, issued on 03/26/2019.
Does ELIZABETH AHERNE, DO prescribe opioids?
Yes, ELIZABETH AHERNE, DO had 88 opioid claims in 2023 with an opioid prescribing rate of 5.7%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does ELIZABETH AHERNE, DO prescribe most often?
Based on 2023 Medicare Part D data, ELIZABETH AHERNE, DO's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELIZABETH AHERNE, DO accept Medicare?
ELIZABETH AHERNE, DO appears in CMS Medicare data with 1,535 Part D claims and 289 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELIZABETH AHERNE, DO's credentials?
ELIZABETH AHERNE, DO's NPI is 1184185902 with credentials DO. 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