Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Deren Mark Sinkowitz, MD

Individual provider Internal Medicine Physician · NPI 1619957750

Deren Mark Sinkowitz, MD is registered under Pulmonary Disease in Torrance, California. Graduated from New York Medical College in 1983, 43 years ago. Practices with Torrance Health Association Inc, a 297-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
43
Trained at
New York Medical College
Licensed in
CA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3701 Skypark Dr # 200
Torrance, CA 90505-4753 Not confirmed with CMS for 13 years — call before visiting
Phone: (310) 378-8900
Fax: (310) 791-0786
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 107553 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 107553 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 107553 (CA)

Record details

NPI number1619957750
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 17, 2006
Last updated in NPPESMay 10, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1983 (43 years in practice)
Group practice Torrance Health Association Inc — 297 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients608
Services billed 2,104 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $976 36 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Torrance Memorial Medical Center Hospital · Torrance, CA

Colleagues at Torrance Health Association Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 297 clinicians in the practice; 12 are shown here.

Other providers in Torrance