Karen A. Kovalow-St. John, M.D.
Rheumatology Physician · San Luis Obispo, CA
Karen A. Kovalow-St. John, M.D. is a rheumatology physician with a practice address in San Luis Obispo, California, and NPI 1336146281, issued on Jul 7, 2005. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen A. Kovalow-St. John
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 01037613A IN
Self-reported in NPPES; status is on the state search - Practice location
- 77 Casa St Ste 101, San Luis Obispo, CA 93405
- Phone
- (661) 695-8385
- Enumerated
- Jul 7, 2005
- Record last updated
- Sep 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (661) 679-6801
- Medicare enrollment
- Enrolled (PECOS I20210119001736); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1983
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 77 Casa St Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deneen Dicarlo, MDRheumatology Physician1497847198
Verify Karen A. Kovalow-St. John 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
29% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,406 Medicare Part D claims for 213 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Hydroxychloroquine Sulfate279 claims
- Prednisone218 claims
- Celecoxib127 claims
- Alendronate Sodium123 claims
- Meloxicam120 claims
- Methotrexate106 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): 95.2 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).
Industry payments in 2024: $3,397.57
165 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Rheumatology Services Medical GroupSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen A. Kovalow-St. John among 926 rheumatology physician records in California
Karen A. Kovalow-St. John, M.D. is one of 926 rheumatology 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1983 · median 2003 among the 641 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in San Luis Obispo → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Deneen Dicarlo, MDSan Luis Obispo, CA 934051497847198
- Barry Eibschutz, M.D.San Luis Obispo, CA 934051164464566
- Nikita Patel, M.D.San Luis Obispo, CA 934031932511904
- John Norris, M.D.San Luis Obispo, CA 934091801083076
- Deepa Ragesh Panikkath, MDSan Luis Obispo, CA 934011821436684
- Attiya Randolph, MDArroyo Grande, CA 934201316566003
- Ena Sharma, M.D.Arroyo Grande, CA 934201235577941
- Frank Scott, D.O.Nipomo, CA 934441295877207
Common questions
What is Karen A. Kovalow-St. John, M.D.'s NPI number?
Karen A. Kovalow-St. John, M.D.'s National Provider Identifier (NPI) is 1336146281, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karen A. Kovalow-St. John, M.D. located?
The NPPES record lists a practice address at 77 Casa St Ste 101, San Luis Obispo, CA, 93405. Phone: (661) 695-8385. Providers update this record themselves, so call before visiting.
How can I verify Karen A. Kovalow-St. John, M.D.'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 Karen A. Kovalow-St. John, M.D. prescribe under Medicare Part D?
In 2024, Karen A. Kovalow-St. John, M.D. had 1,406 Medicare Part D claims for 213 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Karen A. Kovalow-St. John, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.2 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.