Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Dianna Mung-Fung Mak, DO

Individual provider Family Medicine Physician · NPI 1104936988

Dr. Dianna Mung-Fung Mak, DO is a Family Practice in Rancho Cucamonga, California. Graduated from Michigan State University College of Osteopathic Medicine in 1981, 45 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
45
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
CA
In the registry since
2006
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.

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Practice location Address checks out

9089 Baseline Rd Ste 100
Rancho Cucamonga, CA 91730
Phone: (909) 483-0505
Fax: (909) 483-0508
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A5237 (CA)

Record details

NPI number1104936988
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESJanuary 11, 2024
Certification dateJanuary 11, 2024

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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