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

John J.k. Loh, MD

Individual provider Radiation Oncology Physician · NPI 1114197472

John J.k. Loh, MD is a Radiation Oncology Physician in Laguna Woods, California. Licensed in California, Michigan, Minnesota and New York. Registered with an NPI since 2008.

Licensed in
CA, MI, MN, NY
In the registry since
2008
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

4009 Calle Sonora Oeste Unit 3E
Laguna Woods, CA 92637-3252
Phone: (315) 491-3997
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 58968 (MN)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence A36765 (CA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 144774 (NY)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 4301042942 (MI)

Record details

NPI number1114197472
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 3, 2008
Last updated in NPPESJuly 21, 2022
Mailing address4009 Calle Sonora Oeste Unit 3e, Laguna Woods, CA 92637-3252