2026 NPPES data Optometrist NPI 1932211505 OD
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GREGORY FIELDING, OD

Optometrist in CLEVELAND, Oklahoma. 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
62
Medicare Part D claims · 21 beneficiaries · Optometrist avg: 257
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GREGORY FIELDING, OD filed 62 Medicare Part D claims in 2023 as a Optometrist in CLEVELAND, Oklahoma, prescribing 73% generic.

62
Part D claims, 2023
73%
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.

GREGORY FIELDING, OD's Medicare Part D volume vs every U.S. prescriber

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

62 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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 GREGORY FIELDING, OD?

Quality data not reported

NPI registry status

Active

Issued 08/31/2006

NPI 1932211505

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

62 76% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Oklahoma

How Optometrist compares to other specialties among Oklahoma providers

Oklahoma providers

Optometrist share within Oklahoma

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

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).

GREGORY FIELDING, OD is a Optometrist provider practicing in CLEVELAND, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: OD. NPI: 1932211505. 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.

GREGORY FIELDING, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 107 SOUTH BROADWAY, CLEVELAND, OK, 74020, with a listed phone of (918) 358-2245. NPI 1932211505 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 FIELDING 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 62 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $3K in drug spend, split 27% brand-name and 73% 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

107 SOUTH BROADWAY
CLEVELAND, OK 74020

Provider Details

NPI 1932211505
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 08/31/2006

Brand vs generic prescribing mix · Above average

GREGORY FIELDING, OD — brand share 27.0%
Specialty average (est.)

27% brand-name claims vs 73% generic, on 62 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.

62
Total Claims
$3K
Total Drug Cost
21
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
93
Total Day Supply
2,517
Brand vs Generic
27% brand / 73% generic
Brand Drug Cost
$2K
Generic Drug Cost
$534

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.06

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
39

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

Optometrist Overview

How GREGORY FIELDING, OD fits within the Optometrist landscape nationally.

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

GREGORY FIELDING, OD's 62 claims are below the specialty average of 257.

Nearby Optometrist Providers in Oklahoma

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

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

Frequently Asked Questions

What is GREGORY FIELDING, OD's specialty?
GREGORY FIELDING, OD specializes in Optometrist and practices in CLEVELAND, Oklahoma. Credentials: OD.
How much does GREGORY FIELDING, OD prescribe under Medicare Part D?
In 2023, GREGORY FIELDING, OD wrote 62 Medicare Part D claims totaling $3K in drug costs for 21 beneficiaries.
Where is GREGORY FIELDING, OD located?
GREGORY FIELDING, OD is located at 107 SOUTH BROADWAY, CLEVELAND, OK, 74020. Phone: (918) 358-2245.
What is GREGORY FIELDING, OD's NPI number?
GREGORY FIELDING, OD's National Provider Identifier (NPI) is 1932211505, issued on 08/31/2006.
Does GREGORY FIELDING, OD prescribe more brand-name or generic drugs?
GREGORY FIELDING, OD's prescribing is 27% brand-name and 73% generic drugs by claim count, with $2K 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 GREGORY FIELDING, OD prescribe most often?
Based on 2023 Medicare Part D data, GREGORY FIELDING, OD'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 GREGORY FIELDING, OD accept Medicare?
GREGORY FIELDING, OD appears in CMS Medicare data with 62 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY FIELDING, OD's credentials?
GREGORY FIELDING, OD's NPI is 1932211505 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