2026 NPPES data Family Nurse Practitioner NPI 1912371717 CRNP
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THOMAS KROCHALIS, CRNP

Family Nurse Practitioner in MARTINSBURG, West 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
2K
Medicare Part D claims · 153 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$239.69
12 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

THOMAS KROCHALIS, CRNP filed 1,584 Medicare Part D claims in 2023 as a Family Nurse Practitioner in MARTINSBURG, West Virginia, prescribing 92% generic.

2K
Part D claims, 2023
92%
generic prescribing
$239.69
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

THOMAS KROCHALIS, CRNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,584 Top 19% higher than 81% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about THOMAS KROCHALIS, CRNP?

Quality data not reported

NPI registry status

Active

Issued 11/17/2015

NPI 1912371717

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

1,584 30% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in West Virginia

How Family Nurse Practitioner compares to other specialties among West Virginia providers

West Virginia providers

Family Nurse Practitioner share within West Virginia

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Family 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).

THOMAS KROCHALIS, CRNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding CRNP credentials at 99 TAVERN RD, MARTINSBURG, WV, 25401, with a listed phone of (304) 263-4999. NPI 1912371717 was issued on 11/17/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KROCHALIS 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 1,584 prescription claims written by this provider, covering 153 Medicare beneficiaries and totaling roughly $287K 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

99 TAVERN RD
MARTINSBURG, WV 25401

Provider Details

NPI 1912371717
Specialty Family Nurse Practitioner
Credentials CRNP
Gender Male
NPI Issued 11/17/2015

Hospital and facility affiliations

Facilities where THOMAS KROCHALIS, CRNP 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.

SHENANDOAH VALLEY MEDICAL SYSTEM INC
MARTINSBURG, WV

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 THOMAS KROCHALIS, CRNP. Source: openpaymentsdata.cms.gov.

Total received

$240

Largest payer

Axsome Therapeutics, 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

THOMAS KROCHALIS, CRNP — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 1,584 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.

1,584
Total Claims
$287K
Total Drug Cost
153
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,726
Total Day Supply
50,780
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$243K
Generic Drug Cost
$43K

Patient Demographics

Average Patient Age
56.9 years
Avg HCC Risk Score
1.34
Gender Split
54% female / 46% male
Age Distribution
<65: 97, 65-74: 45, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What THOMAS KROCHALIS, CRNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Venlafaxine Hcl Er
Venlafaxine Hcl
95
Fluoxetine Hcl
67
Lamotrigine
65
Olanzapine
64
Quetiapine Fumarate
56
Buspirone Hcl
55
Aripiprazole
54
Sertraline Hcl
51
Mirtazapine
50
Bupropion Xl
Bupropion Hcl
48

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

Family Nurse Practitioner Overview

How THOMAS KROCHALIS, CRNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

THOMAS KROCHALIS, CRNP's 1,584 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in West Virginia

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

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

Frequently Asked Questions

What is THOMAS KROCHALIS, CRNP's specialty?
THOMAS KROCHALIS, CRNP specializes in Family Nurse Practitioner and practices in MARTINSBURG, West Virginia. Credentials: CRNP.
How much does THOMAS KROCHALIS, CRNP prescribe under Medicare Part D?
In 2023, THOMAS KROCHALIS, CRNP wrote 1,584 Medicare Part D claims totaling $287K in drug costs for 153 beneficiaries.
Where is THOMAS KROCHALIS, CRNP located?
THOMAS KROCHALIS, CRNP is located at 99 TAVERN RD, MARTINSBURG, WV, 25401. Phone: (304) 263-4999.
What is THOMAS KROCHALIS, CRNP's NPI number?
THOMAS KROCHALIS, CRNP's National Provider Identifier (NPI) is 1912371717, issued on 11/17/2015.
Does THOMAS KROCHALIS, CRNP prescribe more brand-name or generic drugs?
THOMAS KROCHALIS, CRNP's prescribing is 8% brand-name and 92% generic drugs by claim count, with $243K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does THOMAS KROCHALIS, CRNP prescribe most often?
Based on 2023 Medicare Part D data, THOMAS KROCHALIS, CRNP's most frequently prescribed drugs include Venlafaxine Hcl Er, Fluoxetine Hcl, Lamotrigine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS KROCHALIS, CRNP accept Medicare?
THOMAS KROCHALIS, CRNP appears in CMS Medicare data with 1,584 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS KROCHALIS, CRNP's credentials?
THOMAS KROCHALIS, CRNP's NPI is 1912371717 with credentials CRNP. 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