Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Steven Mark Sornsin, MD

Individual provider Emergency Medicine Physician · NPI 1821056185

Steven Mark Sornsin, MD is an Emergency Medicine in Oakland, California. Graduated from Ohio State University College of Medicine in 1983, 43 years ago. Practices with Lifelong Medical Care, a 74-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
43
Trained at
Ohio State University College of Medicine
Licensed in
CA
In the registry since
2006
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

350 Hawthorne Ave
Oakland, CA 94609-3108
Phone: (510) 655-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G59897 (CA)

Record details

NPI number1821056185
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 3, 2006
Last updated in NPPESJanuary 20, 2026
Certification dateJanuary 20, 2026
Mailing addressPo Box 12469, Westminster, CA 92685-2469

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1983 (43 years in practice)
Group practice Lifelong Medical Care — 74 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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