Anna Kathryn Van Niekerk, DO
Family Medicine Physician · San Diego, CA
Anna Kathryn Van Niekerk, DO is a family medicine physician with a practice address in San Diego, California, and NPI 1265820112, issued on Dec 30, 2014. Check the license (California 20A15206, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anna Kathryn Van Niekerk
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A15206 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4510 Executive Dr Ste 215, San Diego, CA 92121
- Phone
- (800) 926-8273
- Enumerated
- Dec 30, 2014
- Record last updated
- Apr 2, 2026
- Fax
- (888) 539-8781
- Medicare enrollment
- Enrolled (PECOS I20180921002816); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 4510 Executive Dr Ste 215
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Anna Kathryn Van Niekerk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15206Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
331 Medicare Part D claims for 115 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa18 claims
- Atorvastatin Calcium15 claims
- Losartan Potassium15 claims
- Lisinopril12 claims
- Carvedilol11 claims
- Levothyroxine Sodium11 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): 76.2 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).
Bills Medicare through 2 group practices
- Mayo Clinic JacksonvilleJacksonville, FL
- UC San Diego Health Community GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anna Kathryn Van Niekerk among 17,133 family medicine physician records in California
Anna Kathryn Van Niekerk, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 71% of them.
- NPI issued2014 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
780 family medicine physician records list a practice address in San Diego
They are 780 of the 52,937 NPPES records with a practice address in San Diego, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Diego → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Basil Abramowitz, M.D.San Diego, CA 921211104832047
- Stanley Besser, M.D.San Diego, CA 921211760490031
- Patricia Brady, M.D.San Diego, CA 921211952390437
- Amy Chilingirian, DOSan Diego, CA 921211477516706
- Silvia Del Riego, M.D.San Diego, CA 921211063431591
- Cindy Hsu, MDSan Diego, CA 921211609980770
- Christopher Kelsey, MDSan Diega, CA 921211902867419
- Jane Kim, D.O.San Diego, CA 921211497785810
Common questions
What is Anna Kathryn Van Niekerk, DO's NPI number?
Anna Kathryn Van Niekerk, DO's National Provider Identifier (NPI) is 1265820112, issued on Dec 30, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Anna Kathryn Van Niekerk, DO located?
The NPPES record lists a practice address at 4510 Executive Dr Ste 215, San Diego, CA, 92121. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.
How can I verify Anna Kathryn Van Niekerk, DO's license?
NPPES lists California license number 20A15206, 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 Anna Kathryn Van Niekerk, DO prescribe under Medicare Part D?
In 2024, Anna Kathryn Van Niekerk, DO had 331 Medicare Part D claims for 115 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Anna Kathryn Van Niekerk, DO's MIPS final score?
The 2023 MIPS final score is 76.2 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.