Margaret Karwecki, N.P.
Acute Care Nurse Practitioner · Torrance, CA
Margaret Karwecki, N.P. is an acute care nurse practitioner with a practice address in Torrance, California, and NPI 1457658072, issued on Feb 16, 2011. Check the license (California 424756, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Karwecki
- Credential
- N.P.
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 424756 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4201 Torrance Blvd, Torrance, CA 90503
- Phone
- (310) 792-5800
- Enumerated
- Feb 16, 2011
- Record last updated
- Feb 16, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (310) 792-5801
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 1,810 in California → Look up another NPI →
Also registered at 4201 Torrance Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret Karwecki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 424756Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $769.21
39 payments; by number, the most common kind was food and beverage; the largest payer was Kiniksa Pharmaceuticals International, plc. The 10,984 providers of this specialty with any payment received $647.94 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.
Margaret Karwecki among 1,810 acute care nurse practitioner records in California
Margaret Karwecki, N.P. is one of 1,810 acute care nurse practitioner records with a practice address in California. 74% 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 18% of them.
- NPI issued2011 · 18% of these records are older, 79% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2011 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in California
There are 1,810 acute care nurse practitioner records in California.
All 1,810 in California → Every provider in Torrance → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Bethany Francis, NPTorrance, CA 905031437757895
- Jennifer Kisiler, RNTorrance, CA 905031568143790
- Beena PhiliposeTorrance, CA 905031124975198
- Janine Klair Acoba, RN, CNS, ACNP-BCTorrance, CA 905021134357973
- Michelle Bautista, NPTorrance, CA 905021063246528
- Daniel Brubaker, NPTorrance, CA 905021619862083
- Jacqueline Enfiedjian, NPTorrance, CA 905021457828808
- Sandra GoyalTorrance, CA 905021225286859
Common questions
What is Margaret Karwecki, N.P.'s NPI number?
Margaret Karwecki, N.P.'s National Provider Identifier (NPI) is 1457658072, issued on Feb 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Karwecki, N.P. located?
The NPPES record lists a practice address at 4201 Torrance Blvd, Torrance, CA, 90503. Phone: (310) 792-5800. Providers update this record themselves, so call before visiting.
How can I verify Margaret Karwecki, N.P.'s license?
NPPES lists California license number 424756, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.