Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Christopher David Vercammen-Grandjean, MD

Individual provider Internal Medicine Physician · NPI 1942543699

Christopher David Vercammen-Grandjean, MD practises Internal Medicine in Orange, California. Graduated from University of California, San Francisco School of Medicine in 2013, 13 years ago. Practices as a sole proprietor. Licensed in California.

Years since qualifying
13
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2013
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

563 S Kensington Rd
Orange, CA 92869-5147
Phone: (619) 865-9156
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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 A135720 (CA)

Record details

NPI number1942543699
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 1, 2013
Last updated in NPPESJuly 13, 2026
Certification dateJuly 13, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Accepts Medicare assignment Not indicated
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 patients182
Services billed 630 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.

  • Apex Home Health Care Services Home health agency · Santa Ana, CA · listed as Amore Care Home Health Services
  • Remedy Home Health Care Home health agency · Northridge, CA

Other providers in Orange