2026 NPPES data Gerontology Nurse Practitioner NPI 1154591394
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KAREN DONOVAN

Gerontology Nurse Practitioner in OLD LYME, Connecticut. 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
615
Medicare Part D claims · 75 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Industry payments
$32.55
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KAREN DONOVAN is a Gerontology Nurse Practitioner ([object Object]) practicing in OLD LYME, Connecticut with a Medicare Part D prescribing footprint of 615 claims across 75 beneficiaries . Industry payments of $32.55 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KAREN DONOVAN filed 615 Medicare Part D claims in 2023 across OLD LYME, Connecticut. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

KAREN DONOVAN at a glance

Quality data not reported

NPI registry status

Active

Issued 03/04/2008

NPI 1154591394

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

615 52% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Connecticut

How Gerontology Nurse Practitioner compares to other specialties among Connecticut providers

Connecticut providers

Gerontology Nurse Practitioner share within Connecticut

1. Gerontology Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gerontology Nurse Practitioner share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Gerontology Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gerontology Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Gerontology Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gerontology Nurse Practitioner) — 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).

KAREN DONOVAN is a Gerontology Nurse Practitioner provider practicing in OLD LYME, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1154591394. 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.

KAREN DONOVAN appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider at 55 HATCHETTS HILL RD, OLD LYME, CT, 06371, with a listed phone of (800) 370-3651. NPI 1154591394 was issued on 03/04/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DONOVAN 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 615 prescription claims written by this provider, covering 75 Medicare beneficiaries and totaling roughly $26K in drug spend. 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.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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 HATCHETTS HILL RD
OLD LYME, CT 06371

Provider Details

NPI 1154591394
Specialty Gerontology Nurse Practitioner
Gender Female
NPI Issued 03/04/2008

Hospital and facility affiliations

Facilities where KAREN DONOVAN 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.

HARVEST HEALTHCARE LLC
AVON, CT

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 KAREN DONOVAN. Source: openpaymentsdata.cms.gov.

Total received

$33

Largest payer

Neurocrine Biosciences, 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.

Medicare Part D Prescribing Data

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

615
Total Claims
$26K
Total Drug Cost
75
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
615
Total Day Supply
15,159
Generic Drug Cost
$23K

Patient Demographics

Average Patient Age
82.1 years
Avg HCC Risk Score
2.31
Gender Split
60% female / 40% 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
Trazodone Hcl
174
Mirtazapine
91
Quetiapine Fumarate
87
Escitalopram Oxalate
53
Citalopram Hbr
Citalopram Hydrobromide
42
Paliperidone Er
Paliperidone
19
Paroxetine Hcl
17
Sertraline Hcl
15
Donepezil Hcl
13
Ziprasidone Hcl
12

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

Gerontology Nurse Practitioner Overview

How KAREN DONOVAN fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

KAREN DONOVAN's 615 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Connecticut

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

Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAREN DONOVAN's specialty?
KAREN DONOVAN specializes in Gerontology Nurse Practitioner and practices in OLD LYME, Connecticut.
How much does KAREN DONOVAN prescribe under Medicare Part D?
In 2023, KAREN DONOVAN wrote 615 Medicare Part D claims totaling $26K in drug costs for 75 beneficiaries.
Where is KAREN DONOVAN located?
KAREN DONOVAN is located at 55 HATCHETTS HILL RD, OLD LYME, CT, 06371. Phone: (800) 370-3651.
What is KAREN DONOVAN's NPI number?
KAREN DONOVAN's National Provider Identifier (NPI) is 1154591394, issued on 03/04/2008.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does KAREN DONOVAN prescribe most often?
Based on 2023 Medicare Part D data, KAREN DONOVAN's most frequently prescribed drugs include Trazodone Hcl, Mirtazapine, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN DONOVAN accept Medicare?
KAREN DONOVAN appears in CMS Medicare data with 615 Part D claims and 75 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN DONOVAN's credentials?
KAREN DONOVAN's NPI is 1154591394. 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