2026 NPPES data Optometrist NPI 1811242357 O.D.
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HILARY PARRISH, O.D.

Optometrist in VICKSBURG, 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
574
Medicare Part D claims · 161 beneficiaries · Optometrist avg: 257
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$393.83
17 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

HILARY PARRISH, O.D. filed 574 Medicare Part D claims in 2023 as a Optometrist in VICKSBURG, Mississippi, prescribing 47% generic.

574
Part D claims, 2023
47%
generic prescribing
$393.83
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.

HILARY PARRISH, O.D.'s Medicare Part D volume vs every U.S. prescriber

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

574 Top 34% higher than 66% 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%). This entry sits in this band. 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 HILARY PARRISH, O.D.?

Quality data not reported

NPI registry status

Active

Issued 07/20/2012

NPI 1811242357

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

574 123% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Mississippi

How Optometrist compares to other specialties among Mississippi providers

Mississippi providers

Optometrist share within Mississippi

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

Specialty board-certification context

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

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

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

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

HILARY PARRISH, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 2011 HIGHWAY 61 N, VICKSBURG, MS, 39183, with a listed phone of (601) 630-9199. NPI 1811242357 was issued on 07/20/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARRISH 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 574 prescription claims written by this provider, covering 161 Medicare beneficiaries and totaling roughly $138K in drug spend, split 53% brand-name and 47% 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.

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

2011 HIGHWAY 61 N
VICKSBURG, MS 39183

Provider Details

NPI 1811242357
Specialty Optometrist
Credentials O.D.
Gender Female
NPI Issued 07/20/2012

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 HILARY PARRISH, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$394

Largest payer

Alcon Vision LLC

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 · Brand-heavy

HILARY PARRISH, O.D. — brand share 53.0%
Specialty average (est.)

53% brand-name claims vs 47% generic, on 574 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.

574
Total Claims
$138K
Total Drug Cost
161
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
934
Total Day Supply
26,044
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$133K
Generic Drug Cost
$4K
Antibiotic Claims
15

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
1.48
Gender Split
62% female / 38% male
Age Distribution
<65: 36, 65-74: 71, 75-84: 42, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What HILARY PARRISH, O.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
Latanoprost
194
Lumigan
Bimatoprost
70
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
53
Restasis
Cyclosporine
53
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
33
Prednisolone Acetate
33
Brimonidine Tartrate
28
Combigan
Brimonidine Tartrate/Timolol
25

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

Optometrist Overview

How HILARY PARRISH, O.D. fits within the Optometrist landscape nationally.

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

HILARY PARRISH, O.D.'s 574 claims are above the specialty average of 257.

Nearby Optometrist Providers in Mississippi

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

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

Frequently Asked Questions

What is HILARY PARRISH, O.D.'s specialty?
HILARY PARRISH, O.D. specializes in Optometrist and practices in VICKSBURG, Mississippi. Credentials: O.D..
How much does HILARY PARRISH, O.D. prescribe under Medicare Part D?
In 2023, HILARY PARRISH, O.D. wrote 574 Medicare Part D claims totaling $138K in drug costs for 161 beneficiaries.
Where is HILARY PARRISH, O.D. located?
HILARY PARRISH, O.D. is located at 2011 HIGHWAY 61 N, VICKSBURG, MS, 39183. Phone: (601) 630-9199.
What is HILARY PARRISH, O.D.'s NPI number?
HILARY PARRISH, O.D.'s National Provider Identifier (NPI) is 1811242357, issued on 07/20/2012.
Does HILARY PARRISH, O.D. prescribe more brand-name or generic drugs?
HILARY PARRISH, O.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $133K 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 HILARY PARRISH, O.D. prescribe most often?
Based on 2023 Medicare Part D data, HILARY PARRISH, O.D.'s most frequently prescribed drugs include Latanoprost, Lumigan, Neomycin-Polymyxin-Dexameth. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HILARY PARRISH, O.D. accept Medicare?
HILARY PARRISH, O.D. appears in CMS Medicare data with 574 Part D claims and 161 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HILARY PARRISH, O.D.'s credentials?
HILARY PARRISH, O.D.'s NPI is 1811242357 with credentials O.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