Thomas Lloyd Dahl, M.D.
Ophthalmology Physician · Oak Ridge, TN
Thomas Lloyd Dahl, M.D. is an ophthalmology physician with a practice address in Oak Ridge, Tennessee, and NPI 1619090370, issued on Apr 9, 2007. Check the license (Tennessee MD0000040322, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Thomas Lloyd Dahl
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- MD0000040322 TN
Self-reported in NPPES; status is on the state search - Practice location
- 90 Vermont Ave, Oak Ridge, TN 37830
- Phone
- (865) 482-8890
- Enumerated
- Apr 9, 2007
- Record last updated
- Sep 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (865) 482-7400
- Medicare enrollment
- Enrolled (PECOS I20101013000160); accepts Medicare assignment
- Medical or professional school
- East Tennessee State University Quillen College Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 366 in Tennessee → Look up another NPI →
Also registered at 90 Vermont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Baer, ODOptometrist1912991837
- Kathryn Baker, MDOphthalmology Physician1649351479
- James Engblom, DPMFoot Surgery Podiatrist1053398107
- Natalie Frasier, O.D.Optometrist1164655205
- David Hessert, M.D.Ophthalmology Physician1710966320
- James Kuneman, ODOptometrist1699769521
Verify Thomas Lloyd Dahl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license MD0000040322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,048 Medicare Part D claims for 352 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Latanoprost292 claims
- Timolol Maleate131 claims
- Neomycin-Polymyxin-Dexameth85 claims
- Lumigan78 claims
- Restasis71 claims
- Dorzolamide-Timolol43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $430.54
21 payments; by number, the most common kind was food and beverage; the largest payer was Oyster Point Pharma, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Eye Center OF Oak Ridge,pcOak Ridge, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Lloyd Dahl among 366 ophthalmology physician records in Tennessee
Thomas Lloyd Dahl, M.D. is one of 366 ophthalmology physician records with a practice address in Tennessee. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 63% of them.
- NPI issued2007 · 63% of these records are older, 31% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2003 · median 2002 among the 247 with a school on file
- Record last updated2010 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Tennessee
There are 366 ophthalmology physician records in Tennessee.
All 366 in Tennessee → Every provider in Oak Ridge → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kathryn Baker, MDOak Ridge, TN 378301649351479
- David Hessert, M.D.Oak Ridge, TN 378301710966320
- Bradley Luttrell, MDOak Ridge, TN 378301508850298
- Timothy Powers, MDOak Ridge, TN 378301861486573
- Francis Reid, M.D.Oak Ridge, TN 378301427043751
- Lee Smalley, MDOak Ridge, TN 378301083608905
- Eric Speckner, M.D.Oak Ridge, TN 378301972635910
- Robert Walker, MDOak Ridge, TN 378301609860386
Common questions
What is Thomas Lloyd Dahl, M.D.'s NPI number?
Thomas Lloyd Dahl, M.D.'s National Provider Identifier (NPI) is 1619090370, issued on Apr 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Lloyd Dahl, M.D. located?
The NPPES record lists a practice address at 90 Vermont Ave, Oak Ridge, TN, 37830. Phone: (865) 482-8890. Providers update this record themselves, so call before visiting.
How can I verify Thomas Lloyd Dahl, M.D.'s license?
NPPES lists Tennessee license number MD0000040322, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Lloyd Dahl, M.D. prescribe under Medicare Part D?
In 2024, Thomas Lloyd Dahl, M.D. had 1,048 Medicare Part D claims for 352 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Thomas Lloyd Dahl, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.