Karen Kim Quirk, MD
Vascular Surgery Physician · Oxnard, CA
Karen Kim Quirk, MD is a vascular surgery physician with a practice address in Oxnard, California, and NPI 1639363138, issued on Aug 28, 2007. Check the license (California A102046, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Kim Quirk
- Credential
- MD
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- A102046 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2841 N Ventura RD, Oxnard, CA 93036
- Phone
- (805) 983-6233
- Enumerated
- Aug 28, 2007
- Record last updated
- Feb 10, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (805) 983-2459
- Medicare enrollment
- Enrolled (PECOS I20091209000529); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 2841 N Ventura RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Siddharth Agarwal, M.D.Vascular Surgery Physician1407078496
- Gregory Albaugh, D.O.Vascular Surgery Physician1811936982
- Kevin Major, M.D.Vascular Surgery Physician1457383366
Verify Karen Kim Quirk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A102046Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average vascular surgery physician in 2024
326 Medicare Part D claims for 86 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 16 claims were for opioids.
Most prescribed
- Eliquis61 claims
- Clopidogrel57 claims
- Atorvastatin Calcium49 claims
- Lidocaine-Prilocaine30 claims
- Cilostazol27 claims
- Xarelto25 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): 70.7 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: $1,033.07
22 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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
- Coastal Vascular Center PCSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vascular Surgery Physician providers in California
There are 580 vascular surgery physician records in California.
Other vascular surgery physician records in California
- Oliver Aalami, M.D.Stanford, CA1225229024
- Shahram Aarabi, MDOakland, CA1972700458
- Arad Abadi, MDLancaster, CA1730673724
- Ryan Abdul-HaqqWest Hollywood, CA1386087864
- Andrew Abi-Chaker, M.D.Sherman Oaks, CA1528488467
- Ahmed Abou-Zamzam, M.D.Loma Linda, CA1558306795
- Joseph Abu-Dalu, MDLos Angeles, CA1821157587
- Queen Abure, MDSan Francisco, CA1710772074
- Riad Adoumie, M.D.Torrance, CA1467465930
- Massoud Agahi, M.D.Beverly Hills, CA1952367070
Common questions
What is Karen Kim Quirk, MD's NPI number?
Karen Kim Quirk, MD's National Provider Identifier (NPI) is 1639363138, issued on Aug 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karen Kim Quirk, MD located?
The NPPES record lists a practice address at 2841 N Ventura RD, Oxnard, CA, 93036. Phone: (805) 983-6233. Providers update this record themselves, so call before visiting.
How can I verify Karen Kim Quirk, MD's license?
NPPES lists California license number A102046, 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 Karen Kim Quirk, MD prescribe under Medicare Part D?
In 2024, Karen Kim Quirk, MD had 326 Medicare Part D claims for 86 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions only.
What is Karen Kim Quirk, MD's MIPS final score?
The 2023 MIPS final score is 70.7 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.