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

Don P. Hammi, MD

Individual provider Internal Medicine Physician · NPI 1235287269

Don P. Hammi, MD practises Internal Medicine in San Diego, California. Graduated from Texas a & M University System, Hsc, College of Medicine in 2003, 23 years ago. Practices with North County Inpatient Medical Alliance, a Medical Group, Inc, a 45-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Trained at
Texas a & M University System, Hsc, 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

4647 Zion Ave
San Diego, CA 92120-2507 Not confirmed with CMS for 15 years — call before visiting
Phone: (619) 528-5000
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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 A90556 (CA)

Record details

NPI number1235287269
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESMay 3, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTEXAS A & M UNIVERSITY SYSTEM, HSC, COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice North County Inpatient Medical Alliance, A Medical Group, Inc — 45 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 patients388
Services billed 940 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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 Memorial Hospital - Encinitas Hospital · Encinitas, CA
  • Scripps Memorial Hospital La Jolla Hospital · La Jolla, CA

Colleagues at North County Inpatient Medical Alliance, a Medical Group, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 45 clinicians in the practice; 12 are shown here.

Other providers in San Diego