Karin Elizabeth Thomas, MD
Ophthalmology Physician · La Jolla, CA
Karin Elizabeth Thomas, MD is an ophthalmology physician with a practice address in La Jolla, California, and NPI 1861462525, issued on Jan 25, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karin Elizabeth Thomas
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C1-0011955 DE
Self-reported in NPPES; status is on the state search - Practice location
- 9415 Campus Point Dr, La Jolla, CA 92093
- Phone
- (858) 534-6690
- Enumerated
- Jan 25, 2006
- Record last updated
- Jul 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190725000025); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1996
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 9415 Campus Point Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natalie Afshari, M.D.Ophthalmology Physician1538126735
- Manuel Amador, M.D.Medical Physician Assistant1912444076
- Mathieu Bakhoum, M.D., PH.D.Ophthalmology Physician1114347085
- Shagun Bhatia, MD, MSCROphthalmology Physician1104237353
- Daniel Chao, M.D.Retina Specialist (Ophthalmology) Physician1891011953
- Nahia Dib El Jalbout, MDOphthalmic Plastic and Reconstructive Surgery Physician1699506469
Verify Karin Elizabeth Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average ophthalmology physician in 2024
394 Medicare Part D claims for 125 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Latanoprost76 claims
- Erythromycin57 claims
- Neomycin-Polymyxin-Dexameth36 claims
- Prednisolone Acetate35 claims
- Dorzolamide-Timolol27 claims
- Timolol Maleate23 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): 92.9 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: $341.69
11 payments; by number, the most common kind was food and beverage; the largest payer was Mallinckrodt Hospital Products 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
- Delaware Eye Surgeons PAWilmington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karin Elizabeth Thomas among 2,899 ophthalmology physician records in California
Karin Elizabeth Thomas, MD is one of 2,899 ophthalmology physician records with a practice address in California. 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1996 · median 2001 among the 1,907 with a school on file
- Record last updated2019 · 67% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
51 ophthalmology physician records list a practice address in La Jolla
They are 51 of the 3,648 NPPES records with a practice address in La Jolla, and 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in La Jolla → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Natalie Afshari, M.D.La Jolla, CA 920931538126735
- Mathieu Bakhoum, M.D., PH.D.La Jolla, CA 920931114347085
- Brenda Breidenstein, MDLa Jolla, CA 920931518118124
- Tomas Grippo, M.D.La Jolla, CA 920931104010164
- Weldon Haw, M.D.La Jolla, CA 920931710945357
- Don Kikkawa, M.D.La Jolla, CA 920931932202371
- Bobby Korn, M.D.La Jolla, CA 920931174551006
- Eric Leung, M.D.La Jolla, CA 920931083886857
Common questions
What is Karin Elizabeth Thomas, MD's NPI number?
Karin Elizabeth Thomas, MD's National Provider Identifier (NPI) is 1861462525, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karin Elizabeth Thomas, MD located?
The NPPES record lists a practice address at 9415 Campus Point Dr, La Jolla, CA, 92093. Phone: (858) 534-6690. Providers update this record themselves, so call before visiting.
How can I verify Karin Elizabeth Thomas, MD's license?
Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karin Elizabeth Thomas, MD prescribe under Medicare Part D?
In 2024, Karin Elizabeth Thomas, MD had 394 Medicare Part D claims for 125 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Karin Elizabeth Thomas, MD's MIPS final score?
The 2023 MIPS final score is 92.9 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.