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

Jeffrey B Lenchner, MD

Individual provider Emergency Medicine Physician · NPI 1922138171

Jeffrey B Lenchner, MD practises Emergency Medicine in Fremont, California. Graduated from Northeastern Ohio University College of Medicine in 1987, 39 years ago. Practices with Emergency Physicians Associates Fremont PC, a 32-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
39
Trained at
Northeastern Ohio University College of Medicine
Licensed in
CA
In the registry since
2007
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

2000 Mowry Ave
Fremont, CA 94538-1716 Not confirmed with CMS for 19 years — call before visiting
Phone: (510) 791-3430
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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 G63909 (CA)

Record details

NPI number1922138171
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 6, 2007
Last updated in NPPESJuly 9, 2007

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Emergency Physicians Associates Fremont Pc — 32 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients289
Services billed 314 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Emergency Physicians Associates Fremont PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 32 clinicians in the practice; 12 are shown here.

Other providers in Fremont