Przemyslaw Twardowski, MD
Medical Oncology Physician · Santa Monica, CA
Przemyslaw Twardowski, MD is a medical oncology physician with a practice address in Santa Monica, California, and NPI 1942317987, issued on Aug 24, 2006. Check the license (California A66171, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Przemyslaw Twardowski
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A66171 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2121 Santa Monica Blvd, Santa Monica, CA 90404
- Phone
- (310) 582-7137
- Enumerated
- Aug 24, 2006
- Record last updated
- Apr 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 582-7140
- Medicaid ID
- 00A661710 CA
- Medicare enrollment
- Enrolled (PECOS I20101110000899); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 2121 Santa Monica Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sandra Andrews, RD, CDERegistered Dietitian1427347954
- Maia Aronson, P.A.Physician Assistant1861762882
- Daniel ArtensteinStudent in an Organized Health Care Education/Training Program1023402310
- Bita Azizi, RDRegistered Dietitian1861797839
Verify Przemyslaw Twardowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66171Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average medical oncology physician in 2024
82 Medicare Part D claims for 36 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium13 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: $166,105.99
176 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 3,343 providers of this specialty with any payment received $11,773.47 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 Saint Johns Medical FoundationSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Przemyslaw Twardowski among 447 medical oncology physician records in California
Przemyslaw Twardowski, MD is one of 447 medical oncology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1996 · median 2004 among the 312 with a school on file
- Record last updated2021 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in California
There are 447 medical oncology physician records in California.
All 447 in California → Every provider in Santa Monica → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Kim Margolin, MDSanta Monica, CA 904041912014713
- Robert Lehrer, M.D.Santa Monica, CA 904031851664577
- Jeena Chorath, M.D.Torrance, CA 905021639529480
- Robert Margolis, M.D.Torrance, CA 905021568401388
- Parvin Peddi, MDTorrance, CA 905051750504577
- Herbert Rappaport, MDLawndale, CA 902601407875123
- Kamlesh Sankhala, M.D.Beverly Hills, CA 902121225214174
- Noam Drazin, M.D.Beverly Hills, CA 902111952313520
Common questions
What is Przemyslaw Twardowski, MD's NPI number?
Przemyslaw Twardowski, MD's National Provider Identifier (NPI) is 1942317987, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Przemyslaw Twardowski, MD located?
The NPPES record lists a practice address at 2121 Santa Monica Blvd, Santa Monica, CA, 90404. Phone: (310) 582-7137. Providers update this record themselves, so call before visiting.
How can I verify Przemyslaw Twardowski, MD's license?
NPPES lists California license number A66171, 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 Przemyslaw Twardowski, MD prescribe under Medicare Part D?
In 2024, Przemyslaw Twardowski, MD had 82 Medicare Part D claims for 36 beneficiaries; the average among medical oncology physician prescribers was 703. 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.