Katherine Sladewski, PA
Physician Assistant · Torrance, CA
Katherine Sladewski, PA is a physician assistant with a practice address in Torrance, California, and NPI 1104481324, issued on May 2, 2019. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Sladewski
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 20911 Earl St Ste 140, Torrance, CA 90503
- Phone
- (310) 542-0199
- Enumerated
- May 2, 2019
- Record last updated
- Apr 4, 2023
- Fax
- (310) 542-4652
- Medicare enrollment
- Enrolled (PECOS I20200925001187); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 20911 Earl St Ste 140
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Sladewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average physician assistant in 2024
1,344 Medicare Part D claims for 463 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Tamsulosin Hcl439 claims
- Finasteride155 claims
- Myrbetriq96 claims
- Ciprofloxacin Hcl94 claims
- Oxybutynin Chloride Er91 claims
- Gemtesa50 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): 84 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: $1,278.53
51 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Genesis Healthcare Partners PCTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Sladewski among 14,451 physician assistant records in California
Katherine Sladewski, PA is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2020 · median 2018 among the 7,214 with a school on file
- Record last updated2023 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
89 physician assistant records list a practice address in Torrance
They are 89 of the 8,901 NPPES records with a practice address in Torrance, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Torrance → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Brittany Bellows, P.A.Torrance, CA 905031801088240
- Jeramie Bhatia, PA-CTorrance, CA 905031255469334
- Jenny Chen, PA-CTorrance, CA 905031770928855
- Amrita Desai, P.A.-CTorrance, CA 905031326414376
- Steven Dillavou, P.A.-C.Torrance, CA 905031003171851
- Khatereh Hinze, D.C., PA-CTorrance, CA 905031144495441
- Derrick Johnson, PATorrance, CA 905031609093277
- Jaclyn Kwan, P.A.Torrance, CA 905031598172181
Common questions
What is Katherine Sladewski, PA's NPI number?
Katherine Sladewski, PA's National Provider Identifier (NPI) is 1104481324, issued on May 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Sladewski, PA located?
The NPPES record lists a practice address at 20911 Earl St Ste 140, Torrance, CA, 90503. Phone: (310) 542-0199. Providers update this record themselves, so call before visiting.
How can I verify Katherine Sladewski, PA's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Sladewski, PA prescribe under Medicare Part D?
In 2024, Katherine Sladewski, PA had 1,344 Medicare Part D claims for 463 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Katherine Sladewski, PA's MIPS final score?
The 2023 MIPS final score is 84 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.