2026 NPPES data Optometrist NPI 1821042854 O.D.
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TRACY GILES, O.D.

Optometrist in PORTLAND, Maine. 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
321
Medicare Part D claims · 76 beneficiaries · Optometrist avg: 257
Generic prescribing
58%
generic claims · 42% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$52.63
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: TRACY GILES, O.D. is a Optometrist ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 321 claims across 76 beneficiaries — 42% brand-name prescribing . Industry payments of $52.63 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: TRACY GILES, O.D. filed 321 Medicare Part D claims in 2023 across PORTLAND, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

TRACY GILES, O.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/22/2006

NPI 1821042854

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

321 25% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Maine

How Optometrist compares to other specialties among Maine providers

Maine providers

Optometrist share within Maine

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

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).

TRACY GILES, O.D. is a Optometrist provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D.. NPI: 1821042854. 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.

TRACY GILES, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 1039 WASHINGTON AVE, PORTLAND, ME, 04103, with a listed phone of (207) 775-6533. NPI 1821042854 was issued on 05/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GILES 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 321 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $78K in drug spend, split 42% brand-name and 58% 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

1039 WASHINGTON AVE
PORTLAND, ME 04103

Provider Details

NPI 1821042854
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 05/22/2006

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 TRACY GILES, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$53

Largest payer

ABBVIE 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

TRACY GILES, O.D. — brand share 42.0%
Specialty average (est.)

42% brand-name claims vs 58% generic, on 321 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.

321
Total Claims
$78K
Total Drug Cost
76
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
704
Total Day Supply
20,574
Brand vs Generic
42% brand / 58% generic
Brand Drug Cost
$68K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
0.92
Gender Split
57% female / 43% 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
93
Timolol Maleate
51
Lumigan
Bimatoprost
49
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
17
Rhopressa
Netarsudil Mesylate
15
Dorzolamide Hcl
14
Travoprost
13
Combigan
Brimonidine Tartrate/Timolol
11

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

Optometrist Overview

How TRACY GILES, O.D. fits within the Optometrist landscape nationally.

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

TRACY GILES, O.D.'s 321 claims are above the specialty average of 257.

Nearby Optometrist Providers in Maine

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

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

Frequently Asked Questions

What is TRACY GILES, O.D.'s specialty?
TRACY GILES, O.D. specializes in Optometrist and practices in PORTLAND, Maine. Credentials: O.D..
How much does TRACY GILES, O.D. prescribe under Medicare Part D?
In 2023, TRACY GILES, O.D. wrote 321 Medicare Part D claims totaling $78K in drug costs for 76 beneficiaries.
Where is TRACY GILES, O.D. located?
TRACY GILES, O.D. is located at 1039 WASHINGTON AVE, PORTLAND, ME, 04103. Phone: (207) 775-6533.
What is TRACY GILES, O.D.'s NPI number?
TRACY GILES, O.D.'s National Provider Identifier (NPI) is 1821042854, issued on 05/22/2006.
Does TRACY GILES, O.D. prescribe more brand-name or generic drugs?
TRACY GILES, O.D.'s prescribing is 42% brand-name and 58% generic drugs by claim count, with $68K 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 TRACY GILES, O.D. prescribe most often?
Based on 2023 Medicare Part D data, TRACY GILES, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TRACY GILES, O.D. accept Medicare?
TRACY GILES, O.D. appears in CMS Medicare data with 321 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRACY GILES, O.D.'s credentials?
TRACY GILES, O.D.'s NPI is 1821042854 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