JAMES FENLEY, M.D.
Addiction Medicine (Internal Medicine) Physician in ORANGE CITY, Florida. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
JAMES FENLEY, M.D. filed 385 Medicare Part D claims in 2023 as a Addiction Medicine (Internal Medicine) Physician in ORANGE CITY, Florida, prescribing 88% generic.
- 385
- Part D claims, 2023
- 88%
- generic prescribing
- $393.17
- 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.
JAMES FENLEY, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
385 Top 43% higher than 57% 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
JAMES FENLEY, M.D. 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 FENLEY, M.D.?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Florida
How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Florida providers
Addiction Medicine (Internal Medicine) Physician share within Florida
Addiction Medicine (Internal Medicine) Physician is one of the more visible NUCC categories in Florida
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Addiction Medicine (Internal Medicine) Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Addiction Medicine (Internal Medicine) Physician ABMS/AOA estimate
Est. board-certified rate (Addiction Medicine (Internal Medicine) Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Addiction Medicine (Internal Medicine) Physician US NPIs
Specialty board-certified rate — Addiction Medicine (Internal Medicine) Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
JAMES FENLEY, M.D. appears in the CMS NPPES registry as a Addiction Medicine (Internal Medicine) Physician provider holding M.D. credentials at 2583 S VOLUSIA AVE STE 200, ORANGE CITY, FL, 32763, with a listed phone of (386) 960-7830. NPI 1508819269 was issued on 05/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FENLEY 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 385 prescription claims written by this provider, covering 26 Medicare beneficiaries and totaling roughly $73K in drug spend, split 12% brand-name and 88% 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.
Addiction Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 553 enrolled providers across 46 states and an average of 1,403 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 | 1508819269 |
|---|---|
| Specialty | Addiction Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/17/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm JAMES FENLEY, M.D.'s current license status, disciplinary history, and board certifications with the Florida Board of Medicine in Florida before relying on this page for a clinical or care decision.
How we sourced this profile
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 FENLEY, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$393
Largest payer
Theratechnologies 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.
License & disciplinary context — Florida FLDOH 2023 annual report
Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 — they are NOT specific to JAMES FENLEY, M.D.. To verify JAMES FENLEY, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
12% brand-name claims vs 88% generic, on 385 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.
Prescribing Breakdown
- 30-Day Fills
- 420
- Total Day Supply
- 11,647
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $65K
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 58.5 years
- Avg HCC Risk Score
- 2.17
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What JAMES FENLEY, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Aripiprazole
Aripiprazole
38 claims
- Buprenorphine Hcl
Buprenorphine Hcl
35 claims
- Fluoxetine Hcl
Fluoxetine Hcl
33 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
24 claims
- Alprazolam
Alprazolam
23 claims
- Clonazepam
Clonazepam
21 claims
- Methylphenidate Hcl 15
Methylphenidate Hcl
15 claims
- Lorazepam 14
Lorazepam
14 claims
| Drug | Claims |
|---|---|
| Aripiprazole | 38 |
| Buprenorphine Hcl | 35 |
| Fluoxetine Hcl | 33 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 24 |
| Alprazolam | 23 |
| Clonazepam | 21 |
| Methylphenidate Hcl | 15 |
| Lorazepam | 14 |
| Rexulti Brexpiprazole | 14 |
| Olanzapine | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Addiction Medicine (Internal Medicine) Physician Overview
How JAMES FENLEY, M.D. fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.
JAMES FENLEY, M.D.'s 385 claims are below the specialty average of 1,403.
Nearby Addiction Medicine (Internal Medicine) Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as FENLEY.
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Frequently Asked Questions
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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