Deren Mark Sinkowitz, MD
Pulmonary Disease Physician · Torrance, CA
Deren Mark Sinkowitz, MD is a pulmonary disease physician with a practice address in Torrance, California, and NPI 1619957750, issued on Jan 17, 2006. Check the license (California 107553, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Deren Mark Sinkowitz
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 107553 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3701 Skypark Dr, Torrance, CA 90505
- Phone
- (310) 378-8900
- Enumerated
- Jan 17, 2006
- Record last updated
- May 10, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (310) 791-0786
- Medicaid IDs
- 00G538210 CA
1619957750 CA - Medicare enrollment
- Enrolled (PECOS I20040716001078); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1983
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 3701 Skypark Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Abe, MDPulmonary Disease Physician1578542569
- Robert Chang, MDPulmonary Disease Physician1902885833
- Shawn Destasio, NPFamily Nurse Practitioner1942378690
- Beth Dorn, MDInternal Medicine Physician1215973300
- Kay Elledge, MDObstetrics & Gynecology Physician1023055928
- Khalid Eltawil, MDPulmonary Disease Physician1396724399
Verify Deren Mark Sinkowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 107553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average pulmonary disease physician in 2024
1,552 Medicare Part D claims for 313 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of claims.
Most prescribed
- Trelegy Ellipta352 claims
- Albuterol Sulfate Hfa337 claims
- Prednisone149 claims
- Breo Ellipta76 claims
- Wixela Inhub63 claims
- Azithromycin52 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: $1,000.84
30 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,806 providers of this specialty with any payment received $5,159.88 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
- Torrance Health Association IncTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Deren Mark Sinkowitz among 1,443 pulmonary disease physician records in California
Deren Mark Sinkowitz, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1983 · median 2002 among the 1,061 with a school on file
- Record last updated2013 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Torrance → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- John Abe, MDTorrance, CA 905051578542569
- Robert Chang, MDTorrance, CA 905051902885833
- Khalid Eltawil, MDTorrance, CA 905051396724399
- Caleb Hsieh, M.D.Torrance, CA 905051760725550
- Richard Huynh, M.D.Torrance, CA 905051184858243
- Aditya Kotecha, M.D.Torrance, CA 905051811375371
- Cole Liberator, M. D.Torrance, CA 905051912261736
- Catherine Oberg, M.D.Torrance, CA 905051558633503
Common questions
What is Deren Mark Sinkowitz, MD's NPI number?
Deren Mark Sinkowitz, MD's National Provider Identifier (NPI) is 1619957750, issued on Jan 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Deren Mark Sinkowitz, MD located?
The NPPES record lists a practice address at 3701 Skypark Dr, Torrance, CA, 90505. Phone: (310) 378-8900. Providers update this record themselves, so call before visiting.
How can I verify Deren Mark Sinkowitz, MD's license?
NPPES lists California license number 107553, 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 Deren Mark Sinkowitz, MD prescribe under Medicare Part D?
In 2024, Deren Mark Sinkowitz, MD had 1,552 Medicare Part D claims for 313 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.