2026 NPPES data Optometrist NPI 1912018946 O.D.
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WILLIAM GILES, O.D.

Optometrist in MILLEDGEVILLE, Georgia. 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
36
Medicare Part D claims · 14 beneficiaries · Optometrist avg: 257
Generic prescribing
67%
generic claims · 33% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1931/100
▲ 11 pts above national avg 83.1 · [object Object]

What the federal data shows

WILLIAM GILES, O.D. reported a CMS MIPS final score of 94.1931/100 — above the 83.1 national average — and filed 36 Medicare Part D claims in 2023.

94.1931/100
MIPS score · +11 vs avg
36
Part D claims, 2023
67%
generic prescribing

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.

WILLIAM GILES, O.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

94 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about WILLIAM GILES, O.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/31/2006

NPI 1912018946

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

36 86% vs specialty avg

2023 prescription claims

Specialty avg: 257

MIPS final score

94.1931/100 11.093100000000007% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Optometrist compares to other specialties among Georgia providers

Georgia providers

Optometrist share within Georgia

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

Medicare quality performance — MIPS

WILLIAM GILES, O.D.'s 2023 MIPS final score plotted against the Optometrist national average

High performer (top quartile)
MIPS Final Score
94.1931/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Optometrist) — 94.1931/100 vs national avg 83.1

0%100%National avg83%94.2%
MIPS final score (Optometrist) — 94.1931/100 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).

WILLIAM GILES, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 1850 N COLUMBIA ST, MILLEDGEVILLE, GA, 31061, with a listed phone of (478) 453-0011. NPI 1912018946 was issued on 08/31/2006. 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 36 prescription claims written by this provider, covering 14 Medicare beneficiaries and totaling roughly $1K in drug spend, split 33% brand-name and 67% 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 94.1931/100 for the 2023 performance year (Quality 71.2602), 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

1850 N COLUMBIA ST
MILLEDGEVILLE, GA 31061

Provider Details

NPI 1912018946
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 08/31/2006

CMS Quality Score (MIPS)

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

94.1931
Final Score
Avg: 83.1
71.2602
Quality
100
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Above average

WILLIAM GILES, O.D. — brand share 33.0%
Specialty average (est.)

33% brand-name claims vs 67% generic, on 36 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.

36
Total Claims
$1K
Total Drug Cost
14
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
42
Total Day Supply
1,117
Brand vs Generic
33% brand / 67% generic
Brand Drug Cost
$679
Generic Drug Cost
$378

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
1.93

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
25

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

Optometrist Overview

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

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

WILLIAM GILES, O.D.'s 36 claims are below the specialty average of 257.

Nearby Optometrist Providers in Georgia

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

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

Frequently Asked Questions

What is WILLIAM GILES, O.D.'s specialty?
WILLIAM GILES, O.D. specializes in Optometrist and practices in MILLEDGEVILLE, Georgia. Credentials: O.D..
How much does WILLIAM GILES, O.D. prescribe under Medicare Part D?
In 2023, WILLIAM GILES, O.D. wrote 36 Medicare Part D claims totaling $1K in drug costs for 14 beneficiaries.
What is WILLIAM GILES, O.D.'s Medicare quality score?
WILLIAM GILES, O.D. has a CMS MIPS Final Score of 94.1931/100 (Quality: 71.2602). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILLIAM GILES, O.D. located?
WILLIAM GILES, O.D. is located at 1850 N COLUMBIA ST, MILLEDGEVILLE, GA, 31061. Phone: (478) 453-0011.
What is WILLIAM GILES, O.D.'s NPI number?
WILLIAM GILES, O.D.'s National Provider Identifier (NPI) is 1912018946, issued on 08/31/2006.
Does WILLIAM GILES, O.D. prescribe more brand-name or generic drugs?
WILLIAM GILES, O.D.'s prescribing is 33% brand-name and 67% generic drugs by claim count, with $679 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 WILLIAM GILES, O.D. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM GILES, O.D.'s most frequently prescribed drugs include Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM GILES, O.D. accept Medicare?
WILLIAM GILES, O.D. appears in CMS Medicare data with 36 Part D claims and 14 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM GILES, O.D.'s credentials?
WILLIAM GILES, O.D.'s NPI is 1912018946 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.
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