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

Corey Michael Long, MD

Individual provider Emergency Medicine Physician · NPI 1841480159

Corey Michael Long, MD practises Emergency Medicine in San Francisco, California. Qualified in 2005, 21 years ago. Practices with Cep America - California, a 1,267-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
21
Licensed in
CA, NY
In the registry since
2007
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

900 Hyde St Cep - Emergency Dept
San Francisco, CA 94109-4806 Not confirmed with CMS for 10 years — call before visiting
Phone: (415) 353-6300
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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 A109270 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 246506 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1841480159
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 1, 2007
Last updated in NPPESMay 29, 2016

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Cep America - California — 1267 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 patients616
Services billed 756 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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. Those with a page here are linked.

  • John Muir Medical Center - Concord Campus Hospital · Concord, CA · listed as John Muir Medical Ctr Concord Campus
  • John Muir Medical Center - Walnut Creek Campus Hospital · Walnut Creek, CA
  • Ucsf Health Saint Francis Hospital Hospital · San Francisco, CA

Colleagues at Cep America - California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1267 clinicians in the practice; 12 are shown here.

Other providers in San Francisco