THOMAS KEISTER, MD
Pain Medicine (Psychiatry & Neurology) Physician in MANDEVILLE, Louisiana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
THOMAS KEISTER, MD filed 2,376 Medicare Part D claims in 2023 as a Pain Medicine (Psychiatry & Neurology) Physician in MANDEVILLE, Louisiana, prescribing 98% generic.
- 2K
- Part D claims, 2023
- 98%
- 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.
THOMAS KEISTER, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
2,376 Top 14% higher than 86% 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
THOMAS KEISTER, 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 THOMAS KEISTER, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Louisiana
How Pain Medicine (Psychiatry & Neurology) Physician compares to other specialties among Louisiana providers
Pain Medicine (Psychiatry & Neurology) Physician share within Louisiana
Pain Medicine (Psychiatry & Neurology) Physician is one of the more visible NUCC categories in Louisiana
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 — Pain Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Pain Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate
Est. board-certified rate (Pain Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Pain Medicine (Psychiatry & Neurology) Physician US NPIs
Specialty board-certified rate — Pain Medicine (Psychiatry & Neurology) 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).
THOMAS KEISTER, MD appears in the CMS NPPES registry as a Pain Medicine (Psychiatry & Neurology) Physician provider holding MD credentials at 2810 E CAUSEWAY APPROACH, MANDEVILLE, LA, 70448, with a listed phone of (985) 875-2340. NPI 1134177462 was issued on 05/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KEISTER 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 2,376 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $121K in drug spend, split 2% brand-name and 98% 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.
Pain Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 161 enrolled providers across 39 states and an average of 1,690 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 | 1134177462 |
|---|---|
| Specialty | Pain Medicine (Psychiatry & Neurology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/05/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm THOMAS KEISTER, MD's current license status, disciplinary history, and board certifications with the Louisiana State Board of Medical Examiners in Louisiana before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Generic-heavy
2% brand-name claims vs 98% generic, on 2,376 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
- 5,264
- Total Day Supply
- 157,482
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $47K
- Generic Drug Cost
- $74K
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 71% female / 29% male
- Age Distribution
- <65: 31, 65-74: 65, 75-84: 97, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What THOMAS KEISTER, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Mirtazapine
Mirtazapine
252 claims
- Escitalopram Oxalate
Escitalopram Oxalate
150 claims
- Memantine Hcl
Memantine Hcl
141 claims
- Quetiapine Fumarate
Quetiapine Fumarate
133 claims
- Duloxetine Hcl
Duloxetine Hcl
117 claims
- Sertraline Hcl
Sertraline Hcl
101 claims
- Donepezil Hcl 97
Donepezil Hcl
97 claims
- Fluoxetine Hcl 96
Fluoxetine Hcl
96 claims
| Drug | Claims |
|---|---|
| Mirtazapine | 252 |
| Escitalopram Oxalate | 150 |
| Memantine Hcl | 141 |
| Quetiapine Fumarate | 133 |
| Duloxetine Hcl | 117 |
| Sertraline Hcl | 101 |
| Donepezil Hcl | 97 |
| Fluoxetine Hcl | 96 |
| Bupropion Xl Bupropion Hcl | 91 |
| Trazodone Hcl | 89 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pain Medicine (Psychiatry & Neurology) Physician Overview
How THOMAS KEISTER, MD fits within the Pain Medicine (Psychiatry & Neurology) Physician landscape nationally.
THOMAS KEISTER, MD's 2,376 claims are above the specialty average of 1,690.
Nearby Pain Medicine (Psychiatry & Neurology) Physician Providers in Louisiana
Other clinicians with the same primary specialty enrolled in Louisiana, drawn from the same CMS NPPES roster as KEISTER.
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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