NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1851913230
Verify on CMS → James Herbst
Family Medicine Physician in Louisville, Kentucky.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
112
Medicare Part D claims · 37 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$183.25
10 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
James Herbst filed 112 Medicare Part D claims in 2023 as a Family Medicine Physician in Louisville, Kentucky, prescribing 86% generic.
- 112
- Part D claims, 2023
- 86%
- generic prescribing
- $183.25
- industry payments (Sunshine Act)
- ≥35th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1851913230 · Family Medicine Physician
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1851913230
- ENUM-RECENT 2020
- TAX-MEGA 148K Family Medicine
- RX-LIGHT 112
- BOOK-LIGHT 1,867 in Kentucky
- PHOTO-ENUM Miranda Smith · 2020
James Herbst's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
112 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
James Herbst 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 James Herbst?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
112 97% vs specialty avg
Specialty distribution in Kentucky
How Family Medicine Physician compares to other specialties among Kentucky providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1851913230 |
|---|---|
| Specialty | Family Medicine Physician |
| Gender | Male |
| NPI Issued | 05/08/2020 |
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 James Herbst. Source: openpaymentsdata.cms.gov.
Total received
$183
Largest payer
Novo Nordisk 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 · Typical
James Herbst - brand share 14.0%
Family Medicine Physician average
14% brand-name claims vs 86% generic, on 112 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.
112
Total Claims
$9K
Total Drug Cost
37
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 168
- Total Day Supply
- 4,342
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 68.4 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 13, 65-74: 11, 75-84: N/A, 85+: N/A
Family Medicine Physician Overview
How James Herbst fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
James Herbst's 112 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Herbst, both outside Kentucky so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Herbst.
One of 1,867 Family Medicine Physician providers enrolled in Kentucky, 5 are shown here.
Dr. Nison Abayev
MD
Louisville, KY
Dr. Sarah Abbeyquaye
D.O.
Richmond, KY
Dr. Lesley Abbott
D.O.
Flatwoods, KY
Dr. Faten Abdullah
M.D.
Louisville, KY
Dr. Matthew Abel
MD
Nicholasville, KY
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is James Herbst's specialty? ▼
James Herbst specializes in Family Medicine Physician and practices in Louisville, Kentucky.
How much does James Herbst prescribe under Medicare Part D? ▼
In 2023, James Herbst wrote 112 Medicare Part D claims totaling $9K in drug costs for 37 beneficiaries.
Where is James Herbst located? ▼
James Herbst is located at 800 ZORN AVE, Louisville, KY, 40206. Phone: (502) 287-4631.
What is James Herbst's NPI number? ▼
James Herbst's National Provider Identifier (NPI) is 1851913230, issued on 05/08/2020.
Does James Herbst prescribe more brand-name or generic drugs? ▼
James Herbst's prescribing is 14% brand-name and 86% generic drugs by claim count, with $8K in brand drug costs.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
Does James Herbst accept Medicare? ▼
James Herbst appears in CMS Medicare data with 112 Part D claims and 37 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Herbst's credentials? ▼
James Herbst's NPI is 1851913230. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.