Karo Torosian, D.O
Nephrology Physician · La Jolla, CA
Karo Torosian, D.O is a nephrology physician with a practice address in La Jolla, California, and NPI 1275822082, issued on Apr 1, 2011. Check the license (California 20A12445, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karo Torosian
- Credential
- D.O
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 20A12445 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9834 Genesee Ave Ste 312, La Jolla, CA 92037
- Phone
- (619) 260-7220
- Enumerated
- Apr 1, 2011
- Record last updated
- Jan 16, 2026
- Medicare enrollment
- Enrolled (PECOS I20141028001734); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Verify Karo Torosian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average nephrology physician in 2024
1,683 Medicare Part D claims for 266 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Amlodipine Besylate153 claims
- Losartan Potassium137 claims
- Farxiga131 claims
- Lisinopril91 claims
- Calcitriol83 claims
- Sevelamer Carbonate63 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.
Industry payments in 2024: $33.48
1 payment: food and beverage; the largest payer was Nxstage Medical, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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 2 group practices
- Balboa Nephrology Medical Group IncSan Diego, CA
- Emergency And Acute Care Medical CorporationSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karo Torosian among 1,468 nephrology physician records in California
Karo Torosian, D.O is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 76% of them.
- NPI issued2011 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2011 · median 2001 among the 1,128 with a school on file
- Record last updated2026 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in La Jolla → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Clyde Beck, Jr., MDLa Jolla, CA 920371457797169
- Mark Boiskin, M.D.La Jolla, CA 920371437154143
- Melanie Farrell, M.D.La Jolla, CA 920371144322850
- Peter Friend, M.D.La Jolla, CA 920371609825256
- Pranav Garimella, M.D.La Jolla, CA 920371477880102
- Kimberly Harper, M.D.La Jolla, CA 920371699753103
- Anushya Jeyabalan, M.D.La Jolla, CA 920371083053722
- Andrew King, M.D.La Jolla, CA 920371487615886
Common questions
What is Karo Torosian, D.O's NPI number?
Karo Torosian, D.O's National Provider Identifier (NPI) is 1275822082, issued on Apr 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Karo Torosian, D.O located?
The NPPES record lists a practice address at 9834 Genesee Ave Ste 312, La Jolla, CA, 92037. Phone: (619) 260-7220. Providers update this record themselves, so call before visiting.
How can I verify Karo Torosian, D.O's license?
NPPES lists California license number 20A12445, 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 Karo Torosian, D.O prescribe under Medicare Part D?
In 2024, Karo Torosian, D.O had 1,683 Medicare Part D claims for 266 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
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.