2026 NPPES data Emergency Medicine Physician NPI 1649477191 MD
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ROBERT CARTER, MD

Emergency Medicine Physician in CHARLESTON, Mississippi. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
5K
Medicare Part D claims · 476 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$197.16
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROBERT CARTER, MD filed 4,594 Medicare Part D claims in 2023 as a Emergency Medicine Physician in CHARLESTON, Mississippi, prescribing 86% generic.

5K
Part D claims, 2023
86%
generic prescribing
Likely
board-certified (heuristic)

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.

ROBERT CARTER, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

4,594 Top 7% higher than 93% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 certification likely (heuristic — not verified)

ROBERT CARTER, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ROBERT CARTER, MD?

Quality data not reported

NPI registry status

Active

Issued 06/28/2007

NPI 1649477191

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

4,594 1205% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Mississippi

How Emergency Medicine Physician compares to other specialties among Mississippi providers

Mississippi providers

Emergency Medicine Physician share within Mississippi

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Mississippi

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

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).

ROBERT CARTER, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 401 S CHURCH ST, CHARLESTON, MS, 38921, with a listed phone of (662) 647-5816. NPI 1649477191 was issued on 06/28/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CARTER 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 4,594 prescription claims written by this provider, covering 476 Medicare beneficiaries and totaling roughly $334K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 2.4%. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

401 S CHURCH ST
CHARLESTON, MS 38921

Provider Details

NPI 1649477191
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 06/28/2007

Hospital and facility affiliations

Facilities where ROBERT CARTER, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ARCARE
OXFORD, MS
HOSPITAL MEDICINE ASSOCIATES LLC
NEW ALBANY, MS

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 ROBERT CARTER, MD. Source: openpaymentsdata.cms.gov.

Total received

$197

Largest payer

Inspire Medical Systems, 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.

Brand vs generic prescribing mix · Typical

ROBERT CARTER, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 4,594 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.

4,594
Total Claims
$334K
Total Drug Cost
476
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,039
Total Day Supply
192,812
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$233K
Generic Drug Cost
$99K
Opioid Claims
108 (2.4% rate)
Antibiotic Claims
176

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.48
Gender Split
56% female / 44% male
Age Distribution
<65: 57, 65-74: 214, 75-84: 142, 85+: 63

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ROBERT CARTER, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Amlodipine Besylate
218
Atorvastatin Calcium
181
Gabapentin
180
Levothyroxine Sodium
171
Furosemide
134
Eliquis
Apixaban
116
Potassium Chloride
96
Pantoprazole Sodium
95
Famotidine
93
Rosuvastatin Calcium
91

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Emergency Medicine Physician Overview

How ROBERT CARTER, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

ROBERT CARTER, MD's 4,594 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Mississippi

Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as CARTER.

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT CARTER, MD's specialty?
ROBERT CARTER, MD specializes in Emergency Medicine Physician and practices in CHARLESTON, Mississippi. Credentials: MD.
How much does ROBERT CARTER, MD prescribe under Medicare Part D?
In 2023, ROBERT CARTER, MD wrote 4,594 Medicare Part D claims totaling $334K in drug costs for 476 beneficiaries.
Where is ROBERT CARTER, MD located?
ROBERT CARTER, MD is located at 401 S CHURCH ST, CHARLESTON, MS, 38921. Phone: (662) 647-5816.
What is ROBERT CARTER, MD's NPI number?
ROBERT CARTER, MD's National Provider Identifier (NPI) is 1649477191, issued on 06/28/2007.
Does ROBERT CARTER, MD prescribe more brand-name or generic drugs?
ROBERT CARTER, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $233K in brand drug costs.
Does ROBERT CARTER, MD prescribe opioids?
Yes, ROBERT CARTER, MD had 108 opioid claims in 2023 with an opioid prescribing rate of 2.4%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does ROBERT CARTER, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT CARTER, MD's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT CARTER, MD accept Medicare?
ROBERT CARTER, MD appears in CMS Medicare data with 4,594 Part D claims and 476 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT CARTER, MD's credentials?
ROBERT CARTER, MD's NPI is 1649477191 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

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