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

Johanna Elizabeth Gerwer, MD, MPH

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1043742588

Johanna Elizabeth Gerwer, MD, MPH practises Internal Medicine in San Diego, California. Graduated from Texas Tech University Health Science Center School of Medicine in 2017, 9 years ago. Practices with Family Health Centers of San Diego Inc, a 297-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Trained at
Texas Tech University Health Science Center School of Medicine
Licensed in
CA
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

1809 National Ave
San Diego, CA 92113-2113
Phone: (619) 515-2300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence A169752 (CA)

Record details

NPI number1043742588
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedApril 3, 2017
Last updated in NPPESSeptember 13, 2022
Certification dateSeptember 13, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolTEXAS TECH UNIVERSITY HEALTH SCIENCE CENTER SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Family Health Centers Of San Diego Inc — 297 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $224 9 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Family Health Centers of San Diego Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 297 clinicians in the practice; 12 are shown here.

Other providers in San Diego