2026 NPPES data Gerontology Nurse Practitioner NPI 1477659605 NP
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DEBORAH KARK, NP

Gerontology Nurse Practitioner in CROWN POINT, Indiana. 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
611
Medicare Part D claims · 48 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$570.1
5 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: DEBORAH KARK, NP is a Gerontology Nurse Practitioner ([object Object]) practicing in CROWN POINT, Indiana with a Medicare Part D prescribing footprint of 611 claims across 48 beneficiaries — 7% brand-name prescribing . Industry payments of $570.1 across 5 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: DEBORAH KARK, NP filed 611 Medicare Part D claims in 2023 across CROWN POINT, Indiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

DEBORAH KARK, NP at a glance

Quality data not reported

NPI registry status

Active

Issued 09/15/2006

NPI 1477659605

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

611 52% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Indiana

How Gerontology Nurse Practitioner compares to other specialties among Indiana providers

Indiana providers

Gerontology Nurse Practitioner share within Indiana

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

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).

DEBORAH KARK, NP is a Gerontology Nurse Practitioner provider practicing in CROWN POINT, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: NP. NPI: 1477659605. 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.

DEBORAH KARK, NP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding NP credentials at 300 N MAIN ST STE D, CROWN POINT, IN, 46307, with a listed phone of (219) 663-4877. NPI 1477659605 was issued on 09/15/2006. 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 611 prescription claims written by this provider, covering 48 Medicare beneficiaries and totaling roughly $35K in drug spend, split 7% brand-name and 93% 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.

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

300 N MAIN ST STE D
CROWN POINT, IN 46307

Provider Details

NPI 1477659605
Specialty Gerontology Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 09/15/2006

Hospital and facility affiliations

Facilities where DEBORAH KARK, NP 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.

ACESO VISITING PHYSICIANS AND GERIATRIC CARE INC.
CROWN POINT, IN
SELECT REHABILITATION, LLC
GLENVIEW, 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).

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 DEBORAH KARK, NP. Source: openpaymentsdata.cms.gov.

Total received

$570

Largest payer

Optinose US, 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.

Brand vs generic prescribing mix · Generic-heavy

DEBORAH KARK, NP — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 611 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.

611
Total Claims
$35K
Total Drug Cost
48
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
730
Total Day Supply
20,479
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$23K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
83.1 years
Avg HCC Risk Score
1.87
Gender Split
73% female / 27% 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
Atorvastatin Calcium
36
Metoprolol Tartrate
31
Gabapentin
29
Fluoxetine Hcl
24
Furosemide
23
Tolterodine Tartrate Er
Tolterodine Tartrate
23
Donepezil Hcl
18
Single Use Swab
Alcohol Antiseptic Pads
18
Sertraline Hcl
17
Amlodipine Besylate
15

* 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 DEBORAH KARK, NP 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

DEBORAH KARK, NP's 611 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Indiana

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

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

Frequently Asked Questions

What is DEBORAH KARK, NP's specialty?
DEBORAH KARK, NP specializes in Gerontology Nurse Practitioner and practices in CROWN POINT, Indiana. Credentials: NP.
How much does DEBORAH KARK, NP prescribe under Medicare Part D?
In 2023, DEBORAH KARK, NP wrote 611 Medicare Part D claims totaling $35K in drug costs for 48 beneficiaries.
Where is DEBORAH KARK, NP located?
DEBORAH KARK, NP is located at 300 N MAIN ST STE D, CROWN POINT, IN, 46307. Phone: (219) 663-4877.
What is DEBORAH KARK, NP's NPI number?
DEBORAH KARK, NP's National Provider Identifier (NPI) is 1477659605, issued on 09/15/2006.
Does DEBORAH KARK, NP prescribe more brand-name or generic drugs?
DEBORAH KARK, NP's prescribing is 7% brand-name and 93% generic drugs by claim count, with $23K in brand drug costs.
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 DEBORAH KARK, NP prescribe most often?
Based on 2023 Medicare Part D data, DEBORAH KARK, NP's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Tartrate, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DEBORAH KARK, NP accept Medicare?
DEBORAH KARK, NP appears in CMS Medicare data with 611 Part D claims and 48 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DEBORAH KARK, NP's credentials?
DEBORAH KARK, NP's NPI is 1477659605 with credentials NP. 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