NPI registry status
Active
2026 NPPES data Addiction Medicine (Preventive Medicine) Physician NPI 1457520462 M.D.
Verify on CMS → Charles Carpenter, M.D.
Addiction Medicine (Preventive Medicine) Physician in Sacramento, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 343 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
123
Medicare Part D claims · 30 beneficiaries · Addiction Medicine (Preventive Medicine) Physician avg: 929
Industry payments
$46.91
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Charles Carpenter, M.D. filed 123 Medicare Part D claims in 2024 as an Addiction Medicine (Preventive Medicine) Physician in Sacramento, California.
- 123
- Part D claims, 2024
- $46.91
- industry payments (Sunshine Act)
- ≥34th
- 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.
Federal trust snapshot
What official records show about Charles Carpenter, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1457520462), first enumerated 02/23/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 123 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$46.91 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Charles Carpenter, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1457520462 · Addiction Medicine (Preventive Medicine) Physician
NPI-10 · ENUM-MID · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1457520462
- ENUM-MID 2008
- TAX-TRACE 343
- RX-LIGHT 123
- BOOK-THIN 52 in California
- PHOTO-ENUM James Sheffey, MD · 2008
Charles Carpenter, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
123 ≥ 34th percentile 34% of 1,416,883 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 · 2024
◑
Board-eligible specialty (heuristic, not verified)
Charles Carpenter, 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 Charles Carpenter, M.D.?
Quality data not reportedPrimary specialty
Addiction Medicine (Preventive Medicine) Physician
Medicare Part D claims
123 87% vs specialty avg
Specialty distribution in California
How Addiction Medicine (Preventive Medicine) Physician compares to other specialties among California 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).
Practice Address
Provider Details
| NPI | 1457520462 |
|---|---|
| Specialty | Addiction Medicine (Preventive Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/23/2008 |
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 Charles Carpenter, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$47
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.
License & disciplinary context - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Charles Carpenter, M.D.. To verify Charles Carpenter, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
123
Total Claims
$15K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 124.333
- Total Day Supply
- 3,032
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 65.7 years
- Avg HCC Risk Score
- 0.98
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Charles Carpenter, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
33 claims
- Buprenorphine Hcl
Buprenorphine Hcl
21 claims
- Gabapentin 12
Gabapentin
12 claims
| Drug | Claims |
|---|---|
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 33 |
| Buprenorphine Hcl | 21 |
| Gabapentin | 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 CA →
All providers in California →
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Addiction Medicine (Preventive Medicine) Physician Overview
How Charles Carpenter, M.D. fits within the Addiction Medicine (Preventive Medicine) Physician landscape nationally.
343
Addiction Medicine (Preventive Medicine) Physician Providers in US
46
States with Addiction Medicine (Preventive Medicine) Physician
929
Avg Claims per Provider
Charles Carpenter, M.D.'s 123 claims are below the specialty average of 929.
Nationwide Addiction Medicine (Preventive Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Carpenter, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Medicine (Preventive Medicine) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Carpenter.
One of 52 Addiction Medicine (Preventive Medicine) Physician providers enrolled in California, 5 are shown here.
Frequently Asked Questions
What is Charles Carpenter, M.D.'s specialty? ▼
Charles Carpenter, M.D. specializes in Addiction Medicine (Preventive Medicine) Physician and practices in Sacramento, California. Credentials: M.D..
How much does Charles Carpenter, M.D. prescribe under Medicare Part D? ▼
In 2024, Charles Carpenter, M.D. wrote 123 Medicare Part D claims totaling $15K in drug costs for 30 beneficiaries.
Where is Charles Carpenter, M.D. located? ▼
Charles Carpenter, M.D. is located at 2131 CAPITOL AVE, Sacramento, CA, 95816. Phone: (916) 548-9514.
What is Charles Carpenter, M.D.'s NPI number? ▼
Charles Carpenter, M.D.'s National Provider Identifier (NPI) is 1457520462, issued on 02/23/2008.
How many Addiction Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 343 Addiction Medicine (Preventive Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Preventive Medicine) Physician provider writes 929 Medicare Part D claims per year.
What drugs does Charles Carpenter, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Charles Carpenter, M.D.'s most frequently prescribed drugs include Buprenorphine-Naloxone, Buprenorphine Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Carpenter, M.D. accept Medicare? ▼
Charles Carpenter, M.D. appears in CMS Medicare data with 123 Part D claims and 30 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Carpenter, M.D.'s credentials? ▼
Charles Carpenter, M.D.'s NPI is 1457520462 with credentials M.D.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.