2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1730716945 DO
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MATTHEW KARK, DO

Child & Adolescent Psychiatry Physician in DAMARISCOTTA, 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
142
Medicare Part D claims · 19 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MATTHEW KARK, DO is a Child & Adolescent Psychiatry Physician ([object Object]) practicing in DAMARISCOTTA, Maine with a Medicare Part D prescribing footprint of 142 claims across 19 beneficiaries — 8% brand-name prescribing .

What stands out: MATTHEW KARK, DO filed 142 Medicare Part D claims in 2023 across DAMARISCOTTA, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MATTHEW KARK, 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).

MATTHEW KARK, DO at a glance

Quality data not reported

NPI registry status

Active

Issued 03/26/2020

NPI 1730716945

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

142 76% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in Maine

How Child & Adolescent Psychiatry Physician compares to other specialties among Maine providers

Maine providers

Child & Adolescent Psychiatry Physician share within Maine

1. Child & Adolescent Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Child & Adolescent Psychiatry Physician share within Maine

Specialty board-certification context

Estimated specialty board-certified rate — Child & Adolescent Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Child & Adolescent Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Child & Adolescent Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Child & Adolescent Psychiatry 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).

MATTHEW KARK, DO is a Child & Adolescent Psychiatry Physician provider practicing in DAMARISCOTTA, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1730716945. 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.

MATTHEW KARK, DO appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding DO credentials at 24 MILES CENTER WAY, DAMARISCOTTA, ME, 04543, with a listed phone of (844) 292-0111. NPI 1730716945 was issued on 03/26/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KARK 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 142 prescription claims written by this provider, covering 19 Medicare beneficiaries and totaling roughly $30K in drug spend, split 8% brand-name and 92% generic by claim count. 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

24 MILES CENTER WAY
DAMARISCOTTA, ME 04543

Provider Details

NPI 1730716945
Specialty Child & Adolescent Psychiatry Physician
Credentials DO
Gender Male
NPI Issued 03/26/2020

Hospital and facility affiliations

Facilities where MATTHEW KARK, 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.

MAINEHEALTH
PORTLAND, ME

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

Brand vs generic prescribing mix · Generic-heavy

MATTHEW KARK, DO — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 142 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.

142
Total Claims
$30K
Total Drug Cost
19
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
172
Total Day Supply
4,762
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$17K
Generic Drug Cost
$13K

Patient Demographics

Average Patient Age
48.7 years
Avg HCC Risk Score
0.92

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Paliperidone Er
Paliperidone
12

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

Child & Adolescent Psychiatry Physician Overview

How MATTHEW KARK, DO fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

MATTHEW KARK, DO's 142 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in Maine

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

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MATTHEW KARK, DO's specialty?
MATTHEW KARK, DO specializes in Child & Adolescent Psychiatry Physician and practices in DAMARISCOTTA, Maine. Credentials: DO.
How much does MATTHEW KARK, DO prescribe under Medicare Part D?
In 2023, MATTHEW KARK, DO wrote 142 Medicare Part D claims totaling $30K in drug costs for 19 beneficiaries.
Where is MATTHEW KARK, DO located?
MATTHEW KARK, DO is located at 24 MILES CENTER WAY, DAMARISCOTTA, ME, 04543. Phone: (844) 292-0111.
What is MATTHEW KARK, DO's NPI number?
MATTHEW KARK, DO's National Provider Identifier (NPI) is 1730716945, issued on 03/26/2020.
Does MATTHEW KARK, DO prescribe more brand-name or generic drugs?
MATTHEW KARK, DO's prescribing is 8% brand-name and 92% generic drugs by claim count, with $17K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does MATTHEW KARK, DO prescribe most often?
Based on 2023 Medicare Part D data, MATTHEW KARK, DO's most frequently prescribed drugs include Paliperidone Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MATTHEW KARK, DO accept Medicare?
MATTHEW KARK, DO appears in CMS Medicare data with 142 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MATTHEW KARK, DO's credentials?
MATTHEW KARK, DO's NPI is 1730716945 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