2026 NPPES data Dentist NPI 1164728085 D.M.D.
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CASSY SIMPSON, D.M.D.

Dentist in NATCHEZ, 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
196
Medicare Part D claims · 105 beneficiaries · Dentist avg: 87
Industry payments
$107.54
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CASSY SIMPSON, D.M.D. filed 196 Medicare Part D claims in 2023 as a Dentist in NATCHEZ, Mississippi.

196
Part D claims, 2023
$107.54
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.

CASSY SIMPSON, D.M.D.'s Medicare Part D volume vs every U.S. prescriber

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

196 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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

What does the federal data show about CASSY SIMPSON, D.M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/10/2011

NPI 1164728085

Primary specialty

Dentist

High-volume

93,789 US NPIs in this specialty

Medicare Part D claims

196 125% vs specialty avg

2023 prescription claims

Specialty avg: 87

Specialty distribution in Mississippi

How Dentist compares to other specialties among Mississippi providers

Mississippi providers

Dentist share within Mississippi

1. Dentist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Dentist share within Mississippi

Specialty board-certification context

Estimated specialty board-certified rate — Dentist (ABMS / AOA reference)

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

Est. board-certified rate (Dentist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Dentist) — 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).

CASSY SIMPSON, D.M.D. appears in the CMS NPPES registry as a Dentist provider holding D.M.D. credentials at 407 FRANKLIN ST, NATCHEZ, MS, 39120, with a listed phone of (601) 443-7893. NPI 1164728085 was issued on 02/10/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SIMPSON 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 196 prescription claims written by this provider, covering 105 Medicare beneficiaries and totaling roughly $1K in drug spend. 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.

Dentist is a high-volume specialty nationwide, with 93,789 enrolled providers across 56 states and an average of 87 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

407 FRANKLIN ST
NATCHEZ, MS 39120

Provider Details

NPI 1164728085
Specialty Dentist
Credentials D.M.D.
Gender Female
NPI Issued 02/10/2011

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 CASSY SIMPSON, D.M.D.. Source: openpaymentsdata.cms.gov.

Total received

$108

Largest payer

ZIMVIE 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

196
Total Claims
$1K
Total Drug Cost
105
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
204
Total Day Supply
2,067
Generic Drug Cost
$1K
Antibiotic Claims
127

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.35
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

What CASSY SIMPSON, D.M.D. 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
Amoxicillin
90
Cephalexin
13
Chlorhexidine Gluconate
12
Clindamycin Hcl
11

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

Dentist Overview

How CASSY SIMPSON, D.M.D. fits within the Dentist landscape nationally.

93,789
Dentist Providers in US
56
States with Dentist
87
Avg Claims per Provider

CASSY SIMPSON, D.M.D.'s 196 claims are above the specialty average of 87.

Nearby Dentist Providers in Mississippi

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

Compare Dentist nationally: see state-by-state distribution →

Frequently Asked Questions

What is CASSY SIMPSON, D.M.D.'s specialty?
CASSY SIMPSON, D.M.D. specializes in Dentist and practices in NATCHEZ, Mississippi. Credentials: D.M.D..
How much does CASSY SIMPSON, D.M.D. prescribe under Medicare Part D?
In 2023, CASSY SIMPSON, D.M.D. wrote 196 Medicare Part D claims totaling $1K in drug costs for 105 beneficiaries.
Where is CASSY SIMPSON, D.M.D. located?
CASSY SIMPSON, D.M.D. is located at 407 FRANKLIN ST, NATCHEZ, MS, 39120. Phone: (601) 443-7893.
What is CASSY SIMPSON, D.M.D.'s NPI number?
CASSY SIMPSON, D.M.D.'s National Provider Identifier (NPI) is 1164728085, issued on 02/10/2011.
How many Dentist providers are there in the US?
There are 93,789 Dentist providers across 56 states in the US. The average Dentist provider writes 87 Medicare Part D claims per year.
What drugs does CASSY SIMPSON, D.M.D. prescribe most often?
Based on 2023 Medicare Part D data, CASSY SIMPSON, D.M.D.'s most frequently prescribed drugs include Amoxicillin, Cephalexin, Chlorhexidine Gluconate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CASSY SIMPSON, D.M.D. accept Medicare?
CASSY SIMPSON, D.M.D. appears in CMS Medicare data with 196 Part D claims and 105 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CASSY SIMPSON, D.M.D.'s credentials?
CASSY SIMPSON, D.M.D.'s NPI is 1164728085 with credentials D.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

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