NPI registry status
Active
2026 NPPES data Addiction Medicine (Preventive Medicine) Physician NPI 1285703454 MD
Verify on CMS → John Farmer, MD
Addiction Medicine (Preventive 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 325 in Addiction Medicine (Preventive 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
441
Medicare Part D claims · 77 beneficiaries · Addiction Medicine (Preventive Medicine) Physician avg: 959
Industry payments
$13.85
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Farmer, MD filed 441 Medicare Part D claims in 2023 as a Addiction Medicine (Preventive Medicine) Physician in Louisville, Kentucky.
- 441
- Part D claims, 2023
- $13.85
- 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.
John Farmer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
441 Top 38% higher than 62% of 1,370,886 prescribers
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
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Board-eligible specialty (heuristic, not verified)
John Farmer, 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 John Farmer, MD?
Quality data not reportedPrimary specialty
Addiction Medicine (Preventive Medicine) Physician
Medicare Part D claims
441 54% vs specialty avg
Specialty distribution in Kentucky
How Addiction Medicine (Preventive 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 Addiction Medicine (Preventive 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).
John Farmer, MD appears in the CMS NPPES registry as a Addiction Medicine (Preventive Medicine) Physician provider holding MD credentials at 512 EXECUTIVE PARK, Louisville, KY, 40207, with a listed phone of (502) 894-0266. NPI 1285703454 was issued on 11/06/2006.
Medicare Part D records for calendar year 2023 show 441 prescription claims written by this provider, covering 77 Medicare beneficiaries and totaling roughly $31K in drug spend.
Addiction Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 325 enrolled providers across 44 states and an average of 959 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
Provider Details
| NPI | 1285703454 |
|---|---|
| Specialty | Addiction Medicine (Preventive Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/06/2006 |
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 John Farmer, MD. Source: openpaymentsdata.cms.gov.
Total received
$14
Largest payer
Braeburn 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
441
Total Claims
$31K
Total Drug Cost
77
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 721
- Total Day Supply
- 19,705
- Generic Drug Cost
- $24K
Patient Demographics
- Average Patient Age
- 67.4 years
- Avg HCC Risk Score
- 0.73
- Gender Split
- 86% female / 14% male
- Age Distribution
- <65: 12, 65-74: 60, 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 John Farmer, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Estradiol (Twice W…
Estradiol (Twice Weekly)
70 claims
- Estradiol
Estradiol
66 claims
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
59 claims
- Minoxidil 24
Minoxidil
24 claims
- Estradiol (Once We… 23
Estradiol (Once Weekly)
23 claims
- Fluconazole 20
Fluconazole
20 claims
- Lyllana 17
Lyllana
17 claims
- Spironolactone 14
Spironolactone
14 claims
| Drug | Claims |
|---|---|
| Estradiol (Twice Weekly) Estradiol | 70 |
| Estradiol | 66 |
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 59 |
| Minoxidil | 24 |
| Estradiol (Once Weekly) Estradiol | 23 |
| Fluconazole | 20 |
| Lyllana Estradiol | 17 |
| Spironolactone | 14 |
| Dotti Estradiol | 13 |
| Anastrozole | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Preventive Medicine) Physician in KY →
All providers in Kentucky →
Compare specialties →
Addiction Medicine (Preventive Medicine) Physician Overview
How John Farmer, MD fits within the Addiction Medicine (Preventive Medicine) Physician landscape nationally.
325
Addiction Medicine (Preventive Medicine) Physician Providers in US
44
States with Addiction Medicine (Preventive Medicine) Physician
959
Avg Claims per Provider
John Farmer, MD's 441 claims are below the specialty average of 959.
Nearby Addiction Medicine (Preventive Medicine) Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Farmer.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Kentucky medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Medicine (Preventive Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Explore Kentucky
Frequently Asked Questions
What is John Farmer, MD's specialty? ▼
John Farmer, MD specializes in Addiction Medicine (Preventive Medicine) Physician and practices in Louisville, Kentucky. Credentials: MD.
How much does John Farmer, MD prescribe under Medicare Part D? ▼
In 2023, John Farmer, MD wrote 441 Medicare Part D claims totaling $31K in drug costs for 77 beneficiaries.
Where is John Farmer, MD located? ▼
John Farmer, MD is located at 512 EXECUTIVE PARK, Louisville, KY, 40207. Phone: (502) 894-0266.
What is John Farmer, MD's NPI number? ▼
John Farmer, MD's National Provider Identifier (NPI) is 1285703454, issued on 11/06/2006.
How many Addiction Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 325 Addiction Medicine (Preventive Medicine) Physician providers across 44 states in the US. The average Addiction Medicine (Preventive Medicine) Physician provider writes 959 Medicare Part D claims per year.
What drugs does John Farmer, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Farmer, MD's most frequently prescribed drugs include Estradiol (Twice Weekly), Estradiol, Buprenorphine-Naloxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Farmer, MD accept Medicare? ▼
John Farmer, MD appears in CMS Medicare data with 441 Part D claims and 77 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Farmer, MD's credentials? ▼
John Farmer, MD's NPI is 1285703454 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
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
Compiled from official public sources by the PlainDoctor editorial team.
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.