2026 NPPES data Gerontology Nurse Practitioner NPI 1982987301 GNP-BC
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SARAH KOSINSKI, GNP-BC

Gerontology Nurse Practitioner in NORFOLK, Virginia. 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
1K
Medicare Part D claims · 297 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: SARAH KOSINSKI, GNP-BC is a Gerontology Nurse Practitioner ([object Object]) practicing in NORFOLK, Virginia with a Medicare Part D prescribing footprint of 1K claims across 297 beneficiaries — 13% brand-name prescribing .

What stands out: SARAH KOSINSKI, GNP-BC filed 1,441 Medicare Part D claims in 2023 across NORFOLK, Virginia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

SARAH KOSINSKI, GNP-BC at a glance

Quality data not reported

NPI registry status

Active

Issued 09/21/2011

NPI 1982987301

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

1,441 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Virginia

How Gerontology Nurse Practitioner compares to other specialties among Virginia providers

Virginia providers

Gerontology Nurse Practitioner share within Virginia

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

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).

SARAH KOSINSKI, GNP-BC is a Gerontology Nurse Practitioner provider practicing in NORFOLK, Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: GNP-BC. NPI: 1982987301. 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.

SARAH KOSINSKI, GNP-BC appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding GNP-BC credentials at 110 KINGSLEY LN, NORFOLK, VA, 23505, with a listed phone of (757) 354-2885. NPI 1982987301 was issued on 09/21/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOSINSKI 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 1,441 prescription claims written by this provider, covering 297 Medicare beneficiaries and totaling roughly $111K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 8.7%. 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.

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

110 KINGSLEY LN
NORFOLK, VA 23505

Provider Details

NPI 1982987301
Specialty Gerontology Nurse Practitioner
Credentials GNP-BC
Gender Female
NPI Issued 09/21/2011

Brand vs generic prescribing mix · Typical

SARAH KOSINSKI, GNP-BC — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,441 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.

1,441
Total Claims
$111K
Total Drug Cost
297
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,441
Total Day Supply
28,158
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$63K
Generic Drug Cost
$48K
Opioid Claims
125 (8.7% rate)
Antibiotic Claims
23

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
3.37
Gender Split
60% female / 40% male
Age Distribution
<65: 61, 65-74: 85, 75-84: 91, 85+: 60

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Gabapentin
105
Atorvastatin Calcium
70
Eliquis
Apixaban
56
Losartan Potassium
46
Furosemide
44
Levothyroxine Sodium
43
Amlodipine Besylate
36
Carbidopa-Levodopa
Carbidopa/Levodopa
36
Oxycodone Hcl
36
Hydrochlorothiazide
30

* 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 SARAH KOSINSKI, GNP-BC 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

SARAH KOSINSKI, GNP-BC's 1,441 claims are above the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Virginia

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

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

Frequently Asked Questions

What is SARAH KOSINSKI, GNP-BC's specialty?
SARAH KOSINSKI, GNP-BC specializes in Gerontology Nurse Practitioner and practices in NORFOLK, Virginia. Credentials: GNP-BC.
How much does SARAH KOSINSKI, GNP-BC prescribe under Medicare Part D?
In 2023, SARAH KOSINSKI, GNP-BC wrote 1,441 Medicare Part D claims totaling $111K in drug costs for 297 beneficiaries.
Where is SARAH KOSINSKI, GNP-BC located?
SARAH KOSINSKI, GNP-BC is located at 110 KINGSLEY LN, NORFOLK, VA, 23505. Phone: (757) 354-2885.
What is SARAH KOSINSKI, GNP-BC's NPI number?
SARAH KOSINSKI, GNP-BC's National Provider Identifier (NPI) is 1982987301, issued on 09/21/2011.
Does SARAH KOSINSKI, GNP-BC prescribe more brand-name or generic drugs?
SARAH KOSINSKI, GNP-BC's prescribing is 13% brand-name and 87% generic drugs by claim count, with $63K in brand drug costs.
Does SARAH KOSINSKI, GNP-BC prescribe opioids?
Yes, SARAH KOSINSKI, GNP-BC had 125 opioid claims in 2023 with an opioid prescribing rate of 8.7%.
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 SARAH KOSINSKI, GNP-BC prescribe most often?
Based on 2023 Medicare Part D data, SARAH KOSINSKI, GNP-BC's most frequently prescribed drugs include Gabapentin, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SARAH KOSINSKI, GNP-BC accept Medicare?
SARAH KOSINSKI, GNP-BC appears in CMS Medicare data with 1,441 Part D claims and 297 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SARAH KOSINSKI, GNP-BC's credentials?
SARAH KOSINSKI, GNP-BC's NPI is 1982987301 with credentials GNP-BC. 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