2026 NPPES data Internal Medicine Physician NPI 1831364587 MD
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KATHRYN CUNIN, MD

Internal Medicine Physician in BRUNSWICK, Maine. 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
391
Medicare Part D claims · 123 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data reveals: KATHRYN CUNIN, MD is a Internal Medicine Physician ([object Object]) practicing in BRUNSWICK, Maine with a Medicare Part D prescribing footprint of 391 claims across 123 beneficiaries .

What stands out: KATHRYN CUNIN, MD filed 391 Medicare Part D claims in 2023 across BRUNSWICK, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KATHRYN CUNIN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KATHRYN CUNIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/24/2008

NPI 1831364587

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

391 86% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Maine

How Internal Medicine Physician compares to other specialties among Maine providers

Maine providers

Internal Medicine Physician share within Maine

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

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).

KATHRYN CUNIN, MD is a Internal Medicine Physician provider practicing in BRUNSWICK, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1831364587. 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.

KATHRYN CUNIN, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 123 MEDICAL CENTER DR, BRUNSWICK, ME, 04011, with a listed phone of (207) 373-6000. NPI 1831364587 was issued on 04/24/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CUNIN 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 391 prescription claims written by this provider, covering 123 Medicare beneficiaries and totaling roughly $29K in drug spend, with an opioid prescribing rate of 2.8%. 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.

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

123 MEDICAL CENTER DR
BRUNSWICK, ME 04011

Provider Details

NPI 1831364587
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 04/24/2008

Hospital and facility affiliations

Facilities where KATHRYN CUNIN, 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.

AVERA ST LUKES
★★★★☆ 4/5
ABERDEEN, SD
Acute Care Hospitals
CMS CCN: 430014
HOSPITALIST MEDICINE PHYSICIANS OF OHIO, PROFESSIONAL CORPORATION
ASHTABULA, OH
METHODIST MEDICAL CENTER OF ILLINOIS
PEKIN, IL

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

Medicare Part D Prescribing Data

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

391
Total Claims
$29K
Total Drug Cost
123
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
570
Total Day Supply
14,517
Generic Drug Cost
$5K
Opioid Claims
11 (2.8% rate)
Antibiotic Claims
48

Patient Demographics

Average Patient Age
76.7 years
Avg HCC Risk Score
2.19
Gender Split
57% female / 43% male

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
22
Metoprolol Tartrate
21
Atorvastatin Calcium
19
Furosemide
18
Pantoprazole Sodium
17
Eliquis
Apixaban
16
Metoprolol Succinate
14
Amlodipine Besylate
13
Pradaxa
Dabigatran Etexilate Mesylate
12
Spiriva Respimat
Tiotropium Bromide
12

* 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 KATHRYN CUNIN, MD 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

KATHRYN CUNIN, MD's 391 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Maine

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

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

Frequently Asked Questions

What is KATHRYN CUNIN, MD's specialty?
KATHRYN CUNIN, MD specializes in Internal Medicine Physician and practices in BRUNSWICK, Maine. Credentials: MD.
How much does KATHRYN CUNIN, MD prescribe under Medicare Part D?
In 2023, KATHRYN CUNIN, MD wrote 391 Medicare Part D claims totaling $29K in drug costs for 123 beneficiaries.
Where is KATHRYN CUNIN, MD located?
KATHRYN CUNIN, MD is located at 123 MEDICAL CENTER DR, BRUNSWICK, ME, 04011. Phone: (207) 373-6000.
What is KATHRYN CUNIN, MD's NPI number?
KATHRYN CUNIN, MD's National Provider Identifier (NPI) is 1831364587, issued on 04/24/2008.
Does KATHRYN CUNIN, MD prescribe opioids?
Yes, KATHRYN CUNIN, MD had 11 opioid claims in 2023 with an opioid prescribing rate of 2.8%.
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 KATHRYN CUNIN, MD prescribe most often?
Based on 2023 Medicare Part D data, KATHRYN CUNIN, MD's most frequently prescribed drugs include Prednisone, Metoprolol Tartrate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHRYN CUNIN, MD accept Medicare?
KATHRYN CUNIN, MD appears in CMS Medicare data with 391 Part D claims and 123 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHRYN CUNIN, MD's credentials?
KATHRYN CUNIN, MD's NPI is 1831364587 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