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Hematology/Oncology

Samuel J. Slomowitz, MD

Works at hospitals in Simi Valley, CA · Thousand Oaks, CA · Los Angeles, CA … · California

Summary

Samuel J. Slomowitz, MD (Hematology/Oncology) is listed by Medicare at 5 hospitals in Simi Valley, CA, Thousand Oaks, CA and Los Angeles, CA and other places. NPI 1659525756. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Samuel J. Slomowitz, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
18Years since medical school (graduated 2008)
MaleGender (as listed)
The Regents of the University of CaliforniaGroup practice

Quick answers

Which hospitals does Samuel J. Slomowitz work at?
Medicare's official clinician data lists Samuel J. Slomowitz at 5 hospitals: Adventist Health Simi Valley, Los Robles Hospital & Medical Center, Ronald Reagan UCLA Medical Center, Santa Monica - UCLA Medical Center & Orthopaedic Hospital and UCLA West Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Samuel J. Slomowitz see patients?
Medicare's clinician data lists 4 practice locations, including Thousand Oaks, CA, Westlake Village, CA and Santa Monica, CA. Call before your visit to confirm the address.
What is Samuel J. Slomowitz's specialty?
Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
Does Samuel J. Slomowitz accept Medicare assignment?
Yes. Medicare's clinician data says Samuel J. Slomowitz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Samuel J. Slomowitz offer telehealth?
Medicare's clinician data says Samuel J. Slomowitz offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Samuel J. Slomowitz?
(805) 418-3500, as listed in official Medicare / NPI Registry data.
What is Samuel J. Slomowitz's NPI number?
1659525756. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Samuel J. Slomowitz works

Medicare's Facility Affiliation Data lists Samuel J. Slomowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Samuel J. Slomowitz is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Samuel J. Slomowitz as a member of this group (CMS data updated 2026-10-02).

  • The Regents of the University of California1,462 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in Thousand Oaks

Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.

All hematologist-oncologists in Thousand Oaks →

Clinician information

CredentialMD
Graduation year2008
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1659525756
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians