2026 NPPES data Optometrist NPI 1639772924 OD
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GRACE ARNOLD, OD

Optometrist in ZIONSVILLE, Indiana. 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
243
Medicare Part D claims · 73 beneficiaries · Optometrist avg: 257
Generic prescribing
49%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$574.76
21 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GRACE ARNOLD, OD is a Optometrist ([object Object]) practicing in ZIONSVILLE, Indiana with a Medicare Part D prescribing footprint of 243 claims across 73 beneficiaries — 51% brand-name prescribing . Industry payments of $574.76 across 21 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GRACE ARNOLD, OD filed 243 Medicare Part D claims in 2023 across ZIONSVILLE, Indiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

GRACE ARNOLD, OD at a glance

Quality data not reported

NPI registry status

Active

Issued 11/18/2020

NPI 1639772924

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

243 5% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Indiana

How Optometrist compares to other specialties among Indiana providers

Indiana providers

Optometrist share within Indiana

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

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).

GRACE ARNOLD, OD is a Optometrist provider practicing in ZIONSVILLE, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: OD. NPI: 1639772924. 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.

GRACE ARNOLD, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 1120 W OAK ST STE 100, ZIONSVILLE, IN, 46077, with a listed phone of (317) 873-3000. NPI 1639772924 was issued on 11/18/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARNOLD 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 243 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $97K in drug spend, split 51% brand-name and 49% 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

1120 W OAK ST STE 100
ZIONSVILLE, IN 46077

Provider Details

NPI 1639772924
Specialty Optometrist
Credentials OD
Gender Female
NPI Issued 11/18/2020

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 GRACE ARNOLD, OD. Source: openpaymentsdata.cms.gov.

Total received

$575

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 · Brand-heavy

GRACE ARNOLD, OD — brand share 51.0%
Specialty average (est.)

51% brand-name claims vs 49% generic, on 243 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.

243
Total Claims
$97K
Total Drug Cost
73
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
443
Total Day Supply
12,681
Brand vs Generic
51% brand / 49% generic
Brand Drug Cost
$89K
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
1.33
Gender Split
73% female / 27% male
Age Distribution
<65: 18, 65-74: 33, 75-84: N/A, 85+: N/A

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
74
Xiidra
Lifitegrast
28
Restasis
Cyclosporine
23
Timolol Maleate
17
Lumigan
Bimatoprost
16
Prednisolone Acetate
16
Cyclosporine
15

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

Optometrist Overview

How GRACE ARNOLD, OD fits within the Optometrist landscape nationally.

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

GRACE ARNOLD, OD's 243 claims are below the specialty average of 257.

Nearby Optometrist Providers in Indiana

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

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

Frequently Asked Questions

What is GRACE ARNOLD, OD's specialty?
GRACE ARNOLD, OD specializes in Optometrist and practices in ZIONSVILLE, Indiana. Credentials: OD.
How much does GRACE ARNOLD, OD prescribe under Medicare Part D?
In 2023, GRACE ARNOLD, OD wrote 243 Medicare Part D claims totaling $97K in drug costs for 73 beneficiaries.
Where is GRACE ARNOLD, OD located?
GRACE ARNOLD, OD is located at 1120 W OAK ST STE 100, ZIONSVILLE, IN, 46077. Phone: (317) 873-3000.
What is GRACE ARNOLD, OD's NPI number?
GRACE ARNOLD, OD's National Provider Identifier (NPI) is 1639772924, issued on 11/18/2020.
Does GRACE ARNOLD, OD prescribe more brand-name or generic drugs?
GRACE ARNOLD, OD's prescribing is 51% brand-name and 49% generic drugs by claim count, with $89K 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 GRACE ARNOLD, OD prescribe most often?
Based on 2023 Medicare Part D data, GRACE ARNOLD, OD's most frequently prescribed drugs include Latanoprost, Xiidra, Restasis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GRACE ARNOLD, OD accept Medicare?
GRACE ARNOLD, OD appears in CMS Medicare data with 243 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GRACE ARNOLD, OD's credentials?
GRACE ARNOLD, OD's NPI is 1639772924 with credentials OD. 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