2026 NPPES data Optometrist NPI 1992799670 OD
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THOMAS GUNTER, OD

Optometrist in HARRIMAN, Tennessee. 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
233
Medicare Part D claims · 83 beneficiaries · Optometrist avg: 257
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2085/100
▼ 10 pts below national avg 83.1 · [object Object]

What the federal data shows

THOMAS GUNTER, OD reported a CMS MIPS final score of 73.2085/100 — below the 83.1 national average — and filed 233 Medicare Part D claims in 2023.

73.2085/100
MIPS score · -10 vs avg
233
Part D claims, 2023
65%
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.

THOMAS GUNTER, OD's MIPS score vs every scored U.S. clinician

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

73 11th percentile higher than 11% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. 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 THOMAS GUNTER, OD?

Below national average

NPI registry status

Active

Issued 09/08/2005

NPI 1992799670

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

233 9% vs specialty avg

2023 prescription claims

Specialty avg: 257

MIPS final score

73.2085/100 9.891499999999994% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Tennessee

How Optometrist compares to other specialties among Tennessee providers

Tennessee providers

Optometrist share within Tennessee

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

Medicare quality performance — MIPS

THOMAS GUNTER, OD's 2023 MIPS final score plotted against the Optometrist national average

Below national average
MIPS Final Score
73.2085/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Optometrist) — 73.2085/100 vs national avg 83.1

0%100%National avg83%73.2%
MIPS final score (Optometrist) — 73.2085/100 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).

THOMAS GUNTER, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 1855 TANNER WAY, HARRIMAN, TN, 37748, with a listed phone of (865) 882-1535. NPI 1992799670 was issued on 09/08/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUNTER 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 233 prescription claims written by this provider, covering 83 Medicare beneficiaries and totaling roughly $49K in drug spend, split 35% brand-name and 65% 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 73.2085/100 for the 2023 performance year (Quality 86.0927, Cost 29.238), 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

1855 TANNER WAY
HARRIMAN, TN 37748

Provider Details

NPI 1992799670
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 09/08/2005

CMS Quality Score (MIPS)

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

73.2085
Final Score
Avg: 83.1
86.0927
Quality
29.238
Cost

Reporting: Group practice

Brand vs generic prescribing mix · Above average

THOMAS GUNTER, OD — brand share 35.0%
Specialty average (est.)

35% brand-name claims vs 65% generic, on 233 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.

233
Total Claims
$49K
Total Drug Cost
83
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
475
Total Day Supply
13,411
Brand vs Generic
35% brand / 65% generic
Brand Drug Cost
$41K
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
76.2 years
Avg HCC Risk Score
1.28
Gender Split
64% female / 36% male

Top Prescribed Drugs (Medicare Part D)

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

What THOMAS GUNTER, OD 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
77
Timolol Maleate
20
Travoprost
19
Brimonidine Tartrate
18
Restasis
Cyclosporine
14
Alphagan P
Brimonidine Tartrate
11
Erythromycin
Erythromycin Base
11

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

Optometrist Overview

How THOMAS GUNTER, OD fits within the Optometrist landscape nationally.

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

THOMAS GUNTER, OD's 233 claims are below the specialty average of 257.

Nearby Optometrist Providers in Tennessee

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

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

Frequently Asked Questions

What is THOMAS GUNTER, OD's specialty?
THOMAS GUNTER, OD specializes in Optometrist and practices in HARRIMAN, Tennessee. Credentials: OD.
How much does THOMAS GUNTER, OD prescribe under Medicare Part D?
In 2023, THOMAS GUNTER, OD wrote 233 Medicare Part D claims totaling $49K in drug costs for 83 beneficiaries.
What is THOMAS GUNTER, OD's Medicare quality score?
THOMAS GUNTER, OD has a CMS MIPS Final Score of 73.2085/100 (Quality: 86.0927, Cost: 29.238). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is THOMAS GUNTER, OD located?
THOMAS GUNTER, OD is located at 1855 TANNER WAY, HARRIMAN, TN, 37748. Phone: (865) 882-1535.
What is THOMAS GUNTER, OD's NPI number?
THOMAS GUNTER, OD's National Provider Identifier (NPI) is 1992799670, issued on 09/08/2005.
Does THOMAS GUNTER, OD prescribe more brand-name or generic drugs?
THOMAS GUNTER, OD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $41K 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 THOMAS GUNTER, OD prescribe most often?
Based on 2023 Medicare Part D data, THOMAS GUNTER, OD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Travoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS GUNTER, OD accept Medicare?
THOMAS GUNTER, OD appears in CMS Medicare data with 233 Part D claims and 83 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS GUNTER, OD's credentials?
THOMAS GUNTER, OD's NPI is 1992799670 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.
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