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

Dr. Joseph Prinsen, DO, PHD

Individual provider Internal Medicine Physician · NPI 1790135754

Dr. Joseph Prinsen, DO, PHD is a Hospitalist in Lodi, California. Qualified in 2015, 11 years ago. Practices with Galen Inpatient Physicians PC, a 1,031-clinician group and accepts Medicare assignment. Licensed in California, Iowa, Maryland and Michigan and 3 more.

Years since qualifying
11
Licensed in
CA, IA, MD, MI, NM, TN
In the registry since
2016
Specialties on file
8
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

975 S Fairmont Ave
Lodi, CA 95240-5118
Phone: (209) 334-3411
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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 20A19528 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 5101022490 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence A-2292-19 (NM)
Internal Medicine Physician Taxonomy 207R00000X · Licence DO-05466 (IA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 3868 (TN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0102207828 (VA)
Hospitalist Physician Taxonomy 208M00000X · Licence H90545 (MD)
Hospitalist Physician Taxonomy 208M00000X · Licence 20A19528 (CA)

Record details

NPI number1790135754
Entity typeIndividual (Type 1)
GenderMale
Credentials DO , PHD
Sole proprietorNo
NPI enumeratedJune 20, 2016
Last updated in NPPESDecember 5, 2024
Certification dateDecember 5, 2024

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Galen Inpatient Physicians Pc — 1031 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 patients226
Services billed 477 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.

  • Emanate Health Foothill Presbyterian Hospital Hospital · Glendora, CA
  • Emanate Health Inter-Community Hospital Hospital · Covina, CA

Colleagues at Galen Inpatient Physicians PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1031 clinicians in the practice; 12 are shown here.

Other providers in Lodi