2026 NPPES data Optometrist NPI 1427078997
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MARSHALL DORSETT

Optometrist in ABERDEEN, South Dakota. 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
526
Medicare Part D claims · 139 beneficiaries · Optometrist avg: 257
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.9088/100
▼ 0 pts below national avg 83.1 · [object Object]
Industry payments
$315.62
11 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MARSHALL DORSETT is a Optometrist ([object Object]) practicing in ABERDEEN, South Dakota with a Medicare Part D prescribing footprint of 526 claims across 139 beneficiaries — 34% brand-name prescribing . Their CMS MIPS Final Score of 82.9088/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $315.62 across 11 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MARSHALL DORSETT reported a CMS MIPS final score of 82.9088 out of 100, below the 83.1 national average, and filed 526 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

MARSHALL DORSETT at a glance

Near national average

NPI registry status

Active

Issued 07/20/2006

NPI 1427078997

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

526 105% vs specialty avg

2023 prescription claims

Specialty avg: 257

MIPS final score

82.9088/100 0.19119999999999493% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in South Dakota

How Optometrist compares to other specialties among South Dakota providers

South Dakota providers

Optometrist share within South Dakota

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within South Dakota

Medicare quality performance — MIPS

MARSHALL DORSETT's 2023 MIPS final score plotted against the Optometrist national average

Near national average
MIPS Final Score
82.9088/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Optometrist) — 82.9088/100 vs national avg 83.1

0%100%National avg83%82.9%
MIPS final score (Optometrist) — 82.9088/100 vs national avg 83.1

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).

MARSHALL DORSETT is a Optometrist provider practicing in ABERDEEN, South Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1427078997. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MARSHALL DORSETT appears in the CMS NPPES registry as a Optometrist provider at 310 8TH AVE NW STE 503, ABERDEEN, SD, 57401, with a listed phone of (605) 225-2020. NPI 1427078997 was issued on 07/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DORSETT 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 526 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $40K in drug spend, split 34% brand-name and 66% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.9088/100 for the 2023 performance year (Quality 80.3797), compared with the national average of 83.1.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

310 8TH AVE NW STE 503
ABERDEEN, SD 57401

Provider Details

NPI 1427078997
Specialty Optometrist
Gender Male
NPI Issued 07/20/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

82.9088
Final Score
Avg: 83.1
80.3797
Quality
79
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where MARSHALL DORSETT 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.

VISION CARE ASSOCIATES LLP
WEBSTER, SD

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 MARSHALL DORSETT. Source: openpaymentsdata.cms.gov.

Total received

$316

Largest payer

Bausch & Lomb Americas 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 · Above average

MARSHALL DORSETT — brand share 34.0%
Specialty average (est.)

34% brand-name claims vs 66% generic, on 526 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.

526
Total Claims
$40K
Total Drug Cost
139
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
923
Total Day Supply
25,957
Brand vs Generic
34% brand / 66% generic
Brand Drug Cost
$30K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
75.6 years
Avg HCC Risk Score
1.02
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
291
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
66
Timolol Maleate
24
Brimonidine Tartrate
17
Prednisolone Acetate
12

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

Optometrist Overview

How MARSHALL DORSETT fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

MARSHALL DORSETT's 526 claims are above the specialty average of 257.

Nearby Optometrist Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as DORSETT.

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

Frequently Asked Questions

What is MARSHALL DORSETT's specialty?
MARSHALL DORSETT specializes in Optometrist and practices in ABERDEEN, South Dakota.
How much does MARSHALL DORSETT prescribe under Medicare Part D?
In 2023, MARSHALL DORSETT wrote 526 Medicare Part D claims totaling $40K in drug costs for 139 beneficiaries.
What is MARSHALL DORSETT's Medicare quality score?
MARSHALL DORSETT has a CMS MIPS Final Score of 82.9088/100 (Quality: 80.3797). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARSHALL DORSETT located?
MARSHALL DORSETT is located at 310 8TH AVE NW STE 503, ABERDEEN, SD, 57401. Phone: (605) 225-2020.
What is MARSHALL DORSETT's NPI number?
MARSHALL DORSETT's National Provider Identifier (NPI) is 1427078997, issued on 07/20/2006.
Does MARSHALL DORSETT prescribe more brand-name or generic drugs?
MARSHALL DORSETT's prescribing is 34% brand-name and 66% generic drugs by claim count, with $30K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does MARSHALL DORSETT prescribe most often?
Based on 2023 Medicare Part D data, MARSHALL DORSETT's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARSHALL DORSETT accept Medicare?
MARSHALL DORSETT appears in CMS Medicare data with 526 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARSHALL DORSETT's credentials?
MARSHALL DORSETT's NPI is 1427078997. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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