NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1265574859 MD
Verify on CMS → John Carter, MD
Anesthesiology Physician in Baton Rouge, Louisiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 56,432 in Anesthesiology 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
13
Medicare Part D claims · Anesthesiology Physician avg: 860
Generic prescribing
0%
generic claims · 85% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Carter, MD filed 13 Medicare Part D claims in 2023 as a Anesthesiology Physician in Baton Rouge, Louisiana, prescribing 0% generic.
- 13
- Part D claims, 2023
- 0%
- 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.
John Carter, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
13 0th percentile higher than 0% 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
◑
Board-eligible specialty (heuristic, not verified)
John Carter, 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 Carter, MD?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
13 98% vs specialty avg
Specialty distribution in Louisiana
How Anesthesiology Physician compares to other specialties among Louisiana 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 Anesthesiology 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 Carter, MD appears in the CMS NPPES registry as an Anesthesiology Physician provider holding MD credentials at 8212 SUMMA AVE, Baton Rouge, LA, 70809, with a listed phone of (225) 769-4403. NPI 1265574859 was issued on 02/12/2007.
Medicare Part D records for calendar year 2023 show 13 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $9K in drug spend, split 85% brand-name and 0% generic by claim count.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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 | 1265574859 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/12/2007 |
Brand vs generic prescribing mix · Brand-heavy
John Carter, MD - brand share 85.0%
Anesthesiology Physician average
85% brand-name claims vs 0% generic, on 13 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.
13
Total Claims
$9K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 23
- Total Day Supply
- 643
- Brand vs Generic
- 85% brand / 0% generic
- Brand Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 59.0 years
- Avg HCC Risk Score
- 0.49
Anesthesiology Physician Overview
How John Carter, MD fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
John Carter, MD's 13 claims are below the specialty average of 860.
Nearby Anesthesiology Physician Providers in Louisiana
Other clinicians with the same primary specialty enrolled in Louisiana, drawn from the same CMS NPPES roster as Carter.
Dr. Eric Abraham
MD
New Orleans, LA
Dr. Todd Ackal
MD
Lafayette, LA
Dr. Clel Acosta
MD
Thibodaux, LA
Dr. Jefferey Adair
MD
Shreveport, LA
Dr. Ben Adams
DO
Houma, LA
Compare Anesthesiology Physician nationally: see state-by-state distribution →
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 Louisiana medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology 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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Medical Specialties Explained
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Explore Louisiana
Frequently Asked Questions
What is John Carter, MD's specialty? ▼
John Carter, MD specializes in Anesthesiology Physician and practices in Baton Rouge, Louisiana. Credentials: MD.
How much does John Carter, MD prescribe under Medicare Part D? ▼
In 2023, John Carter, MD wrote 13 Medicare Part D claims totaling $9K in drug costs for N/A beneficiaries.
Where is John Carter, MD located? ▼
John Carter, MD is located at 8212 SUMMA AVE, Baton Rouge, LA, 70809. Phone: (225) 769-4403.
What is John Carter, MD's NPI number? ▼
John Carter, MD's National Provider Identifier (NPI) is 1265574859, issued on 02/12/2007.
Does John Carter, MD prescribe more brand-name or generic drugs? ▼
John Carter, MD's prescribing is 85% brand-name and 0% generic drugs by claim count, with $9K in brand drug costs.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
Does John Carter, MD accept Medicare? ▼
John Carter, MD appears in CMS Medicare data with 13 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Carter, MD's credentials? ▼
John Carter, MD's NPI is 1265574859 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.