James Krempasky, D.O.
Family Medicine Physician · Torrance, CA
James Krempasky, D.O. is a family medicine physician with a practice address in Torrance, California, and NPI 1558799627, issued on Oct 28, 2013. Check the license (California 20A23159, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Krempasky
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A23159 CA
34.012125 OH
58005250 OH
Self-reported in NPPES; status is on the state search - Practice location
- 21311 Madrona Ave Ste 100A, Torrance, CA 90503
- Phone
- (310) 792-4400
- Enumerated
- Oct 28, 2013
- Record last updated
- Feb 27, 2026
- Fax
- (424) 212-5975
- Medicare enrollment
- Enrolled (PECOS I20250918001266); accepts Medicare assignment
- Medical or professional school
- Ohio University, College Of Osteopathic Medicine, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 21311 Madrona Ave Ste 100A
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Krempasky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A23159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average family medicine physician in 2024
5,297 Medicare Part D claims for 449 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium425 claims
- Lisinopril220 claims
- Levothyroxine Sodium191 claims
- Amlodipine Besylate190 claims
- Metformin Hcl167 claims
- Omeprazole117 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: $34.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Bard Peripheral Vascular, Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Providence Medical InstituteGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Krempasky among 17,133 family medicine physician records in California
James Krempasky, D.O. 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 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · 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).
114 family medicine physician records list a practice address in Torrance
They are 114 of the 8,901 NPPES records with a practice address in Torrance, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Torrance → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Modupe Aiyegbusi, M.D.Torrance, CA 905031710088349
- John Annable, M.D.Torrance, CA 905031790790475
- Nimra Chaudhri, M.D.Torrance, CA 905031063699148
- Anh Dao Chung, D.O.Torrance, CA 905031295787638
- Daniel Dodson, D.O.Torrance, CA 905031962677385
- Mary Jo Donahue, M.D.Torrance, CA 905031326090705
- Eduardo Godoy, MDTorrance, CA 905031659305852
- Ricardo Jimenez-Kimble, MDTorrance, CA 905031194985200
Common questions
What is James Krempasky, D.O.'s NPI number?
James Krempasky, D.O.'s National Provider Identifier (NPI) is 1558799627, issued on Oct 28, 2013. An NPI identifies a provider in billing; it is not a license.
Where is James Krempasky, D.O. located?
The NPPES record lists a practice address at 21311 Madrona Ave Ste 100A, Torrance, CA, 90503. Phone: (310) 792-4400. Providers update this record themselves, so call before visiting.
How can I verify James Krempasky, D.O.'s license?
NPPES lists California license number 20A23159, 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 James Krempasky, D.O. prescribe under Medicare Part D?
In 2024, James Krempasky, D.O. had 5,297 Medicare Part D claims for 449 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.