2026 NPPES data Cardiovascular Disease Physician NPI 1255307880 MD
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JEFFREY GROOTHUIS, MD

Cardiovascular Disease Physician in KOKOMO, 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
126
Medicare Part D claims · 86 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JEFFREY GROOTHUIS, MD filed 126 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in KOKOMO, Indiana, prescribing 86% generic.

126
Part D claims, 2023
86%
generic prescribing

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.

JEFFREY GROOTHUIS, MD's Medicare Part D volume vs every U.S. prescriber

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

126 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 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

Board-eligible specialty (heuristic — not verified)

JEFFREY GROOTHUIS, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JEFFREY GROOTHUIS, MD?

Quality data not reported

NPI registry status

Active

Issued 02/24/2006

NPI 1255307880

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

126 96% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in Indiana

How Cardiovascular Disease Physician compares to other specialties among Indiana providers

Indiana providers

Cardiovascular Disease Physician share within Indiana

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Indiana

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Cardiovascular Disease Physician ABMS/AOA estimate

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

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

JEFFREY GROOTHUIS, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at 2030 W BOULEVARD, KOKOMO, IN, 46902, with a listed phone of (765) 454-0200. NPI 1255307880 was issued on 02/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROOTHUIS 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 126 prescription claims written by this provider, covering 86 Medicare beneficiaries and totaling roughly $23K in drug spend, split 14% brand-name and 86% 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

2030 W BOULEVARD
KOKOMO, IN 46902

Provider Details

NPI 1255307880
Specialty Cardiovascular Disease Physician
Credentials MD
Gender Male
NPI Issued 02/24/2006

Brand vs generic prescribing mix · Typical

JEFFREY GROOTHUIS, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 126 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.

126
Total Claims
$23K
Total Drug Cost
86
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
334
Total Day Supply
10,015
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$20K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.8 years
Avg HCC Risk Score
1.66
Gender Split
45% female / 55% 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
Warfarin Sodium
14
Amlodipine Besylate
11

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

Cardiovascular Disease Physician Overview

How JEFFREY GROOTHUIS, MD fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

JEFFREY GROOTHUIS, MD's 126 claims are below the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Indiana

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JEFFREY GROOTHUIS, MD's specialty?
JEFFREY GROOTHUIS, MD specializes in Cardiovascular Disease Physician and practices in KOKOMO, Indiana. Credentials: MD.
How much does JEFFREY GROOTHUIS, MD prescribe under Medicare Part D?
In 2023, JEFFREY GROOTHUIS, MD wrote 126 Medicare Part D claims totaling $23K in drug costs for 86 beneficiaries.
Where is JEFFREY GROOTHUIS, MD located?
JEFFREY GROOTHUIS, MD is located at 2030 W BOULEVARD, KOKOMO, IN, 46902. Phone: (765) 454-0200.
What is JEFFREY GROOTHUIS, MD's NPI number?
JEFFREY GROOTHUIS, MD's National Provider Identifier (NPI) is 1255307880, issued on 02/24/2006.
Does JEFFREY GROOTHUIS, MD prescribe more brand-name or generic drugs?
JEFFREY GROOTHUIS, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $20K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does JEFFREY GROOTHUIS, MD prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY GROOTHUIS, MD's most frequently prescribed drugs include Warfarin Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY GROOTHUIS, MD accept Medicare?
JEFFREY GROOTHUIS, MD appears in CMS Medicare data with 126 Part D claims and 86 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY GROOTHUIS, MD's credentials?
JEFFREY GROOTHUIS, MD's NPI is 1255307880 with credentials MD. 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