Diana Kersten, M.D.
Ophthalmology Physician · Laguna Hills, CA
Diana Kersten, M.D. is an ophthalmology physician with a practice address in Laguna Hills, California, and NPI 1154387595, issued on Apr 25, 2006. Check the license (California A42878, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diana Kersten
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A42878 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24401 Calle DE LA Louisa, Laguna Hills, CA 92653
- Phone
- (949) 951-2020
- Enumerated
- Apr 25, 2006
- Entity
- Type 1 · individual
Also registered at 24401 Calle DE LA Louisa
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Brown, M.S.Genetic Counselor (M.S.)1194925255
- Nancy Bucciarelli, M.D.Diagnostic Radiology Physician1801948302
- Jeffrey Jacobs, M.D.Ophthalmology Physician1194783266
- Brian Kim, M.D.Ophthalmology Physician1477713030
- Edward Kim, M.D.Ophthalmology Physician1134185606
- Mark Levy, O.D.Optometrist1114984408
Verify Diana Kersten in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A42878Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
34% fewer Medicare Part D claims than the average ophthalmology physician in 2024
982 Medicare Part D claims for 348 beneficiaries, against an average of 1,490 among the 16,109 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of claims.
Most prescribed
- Prednisolone Acetate263 claims
- Latanoprost164 claims
- Prolensa121 claims
- Difluprednate95 claims
- Ofloxacin93 claims
- Bromfenac Sodium56 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 Medicare quality score for 2023: 75.4 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: $503.94
10 payments, mostly food and beverage; the largest payer was Alcon Vision LLC. The 12,922 providers of this specialty with any payment received $4,937.17 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.
One hospital or facility affiliation
- Harvard Eye Associates Fka Roger Ohanesian MD And Edward Kim MD IncSan Clemente, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ophthalmology Physician providers in California
There are 2,888 ophthalmology physician records in California.
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Thomas Ableman, M.D.San Diego, CA1558415067
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Diana Kersten, M.D.'s NPI number?
Diana Kersten, M.D.'s National Provider Identifier (NPI) is 1154387595, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Kersten, M.D. located?
The NPPES record lists a practice address at 24401 Calle DE LA Louisa, Laguna Hills, CA, 92653. Phone: (949) 951-2020. Providers update this record themselves, so call before visiting.
How can I verify Diana Kersten, M.D.'s license?
NPPES lists California license number A42878, as entered by the provider. 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 Diana Kersten, M.D. prescribe under Medicare Part D?
In 2024, Diana Kersten, M.D. had 982 Medicare Part D claims for 348 beneficiaries; the average among ophthalmology physician prescribers was 1,490. Part D covers Medicare prescriptions only.
What is Diana Kersten, M.D.'s Medicare quality score?
The 2023 MIPS final score is 75.4 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.