Kathleen A. O'Brien
Dermatology Physician · Encinitas, CA
Kathleen A. O'Brien is a dermatology physician with a practice address in Encinitas, California, and NPI 1134681364, issued on Apr 5, 2019. Check the license (California A179379, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kathleen A. O'Brien
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A179379 CA
Self-reported in NPPES; status is on the state search - Practice location
- 326 Santa FE Dr, Encinitas, CA 92024
- Phone
- (760) 633-7234
- Enumerated
- Apr 5, 2019
- Record last updated
- Mar 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20231031002754); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 326 Santa FE Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andre Aung, MDOphthalmology Physician1750802880
- Michael Bannach, M.D.Family Medicine Physician1548333040
- Debra Bement, DOFamily Medicine Physician1912119322
- Hannah Berman, MDDermatology Physician1952987349
- Christine Burman, NPFamily Nurse Practitioner1033650189
- Kenesha Colson, PA-CPhysician Assistant1912333840
Verify Kathleen A. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179379Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average dermatology physician in 2024
729 Medicare Part D claims for 293 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Ketoconazole211 claims
- Triamcinolone Acetonide99 claims
- Clobetasol Propionate50 claims
- Mupirocin33 claims
- Clindamycin Phosphate30 claims
- Fluorouracil28 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 MIPS final score for 2023 (Medicare payment program): 90.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $475.05
20 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 10,250 providers of this specialty with any payment received $8,544.61 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
- Scripps HealthEncinitas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
Other dermatology physician records in California
- Sam Abaza, M.D.Diamond Bar, CA1831148501
- Farah Abdulla, MDDuarte, CA1093934390
- Robert Abergel, M.D.Santa Monica, CA1841565843
- Karen Abisogun, MDLos Angeles, CA1124474515
- Glynis Ablon, M.D.Manhattan Beach, CA1144292889
- Arthur Abrams, MDMountain View, CA1518093178
- Payam Abrishami, MDAgoura Hills, CA1447288147
- Aseel Abu-NasserRedding, CA1609641711
- Rachel Abuav, M.D.Beverly Hills, CA1356481733
- Boya Abudu, MD, MPHSacramento, CA1336608637
Common questions
What is Kathleen A. O'Brien's NPI number?
Kathleen A. O'Brien's National Provider Identifier (NPI) is 1134681364, issued on Apr 5, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen A. O'Brien located?
The NPPES record lists a practice address at 326 Santa FE Dr, Encinitas, CA, 92024. Phone: (760) 633-7234. Providers update this record themselves, so call before visiting.
How can I verify Kathleen A. O'Brien's license?
NPPES lists California license number A179379, 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 Kathleen A. O'Brien prescribe under Medicare Part D?
In 2024, Kathleen A. O'Brien had 729 Medicare Part D claims for 293 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Kathleen A. O'Brien's MIPS final score?
The 2023 MIPS final score is 90.6 of 100. 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.