DR. PRZEMYSLAW TWARDOWSKI MD
NPI 1942317987
Internal Medicine - Medical Oncology in Santa Monica, CA

Q: What is Przemyslaw Twardowski's NPI number?

The NPI number for Przemyslaw Twardowski is 1942317987. It was assigned to this individual provider in the NPPES registry on August 24, 2006.

Q: What is Przemyslaw Twardowski's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Active since August 24, 2006PECOS EnrolledAccepts Medicare Assignment

2121 SANTA MONICA BLVD, SANTA MONICA, CA 90404(310) 582-7137(310) 582-7140 Get Directions Write a Review

NPPES record last updated: April 20, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 20, 2021, Aug 14, 2020, Jan 9, 2019 and 2 more (5 updates tracked since 2017).

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About Dr. Przemyslaw Twardowski Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. PRZEMYSLAW TWARDOWSKI MD (NPI 1942317987) is an individual medical oncology provider in Santa Monica, California, licensed in California (A66171) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Missouri, Kansas City, School Of Medicine (1996).

NPPES Registry Identity

NPI1942317987

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameDR. PRZEMYSLAW TWARDOWSKICredential: MD

Location Address2121 SANTA MONICA BLVDSanta Monica, CA 90404-2303

Mailing AddressPo Box 512185Los Angeles, CA 90051-0185 · (626) 775-3514 · Fax (626) 218-5310

Phone(310) 582-7137

Fax(310) 582-7140

Sole ProprietorNo

Medical School CMSUniversity Of Missouri, Kansas City, School Of MedicineGraduated 1996

Enumeration DateAugust 24, 2006

Last NPPES UpdateApril 20, 20215 updates tracked since enumeration

NPPES CertifiedApril 20, 2021

✔ NPI 1942317987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in CA · A66171

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License A66171 (CA)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A66171 (CA)

2121 SANTA MONICA BLVD, Santa Monica, CA 90404

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Other Identifiers 1

Medicaid00A661710CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Przemyslaw Twardowski Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5799970232

PECOS Enrollment IDI20101110000899

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Przemyslaw Twardowski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Saint Johns Medical Foundation

Same address

Specialist

2121 SANTA MONICA BLVD
Santa Monica, CA 90404

Reassigned Medicare billing, California enrollment
461 clinicians in this Medicare group

NPI 1770093734 (310) 582-7312

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

1,225 services262 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

134 services22 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

70 services43 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

56 services56 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

24 services17 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

19 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90404 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MINA RIM KANG MD

Hospitalist