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

Dr. Michael J Sullivan, MD

Individual provider Internal Medicine Physician · NPI 1932100807

Dr. Michael J Sullivan, MD is a Hospitalist in San Diego, California. Graduated from University of California, Irvine, California College of Medicine in 1988, 38 years ago. Practices with Scripps Health Inpatient Providers Medical Group Inc, a 208-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
38
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2005
Specialties on file
2
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

1835 El Cajon Blvd Ste B
San Diego, CA 92103-2591 Not confirmed with CMS for 13 years — call before visiting
Phone: (619) 692-3977
Fax: (619) 692-4160
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G66543 (CA)
Clinical Medical Laboratory Taxonomy 291U00000X · Licence G66543 (CA)

Record details

NPI number1932100807
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 2, 2005
Last updated in NPPESMay 10, 2013

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesGERIATRIC MEDICINE, INTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Scripps Health Inpatient Providers Medical Group Inc — 208 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients201
Services billed 690 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

  • Scripps Mercy Hospital Hospital · San Diego, CA

Colleagues at Scripps Health Inpatient Providers Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 208 clinicians in the practice; 12 are shown here.

Other providers in San Diego