Physician Profile
Dianna M. Mak, DO
Unclaimed ProfileAbout Dr. Mak
Dianna M. Mak, DO practices family medicine in Rancho Cucamonga, CA. Dianna is a 1981 graduate of Michigan State University College of Osteopathic Medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (909) 483-0505
- Email not available
Practice Locations
9089 BASELINE ROAD SUITE 100
Rancho Cucamonga, CA 91730
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family doctors at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other family doctors in Rancho Cucamonga 7
Same specialty, same city.
Trained at Michigan State University College of Osteopathic Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Michigan State University College of Osteopathic Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Mak specialize in?
Dr. Mak is a family doctor in Rancho Cucamonga, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
Where is Dr. Mak located?
Dr. Mak is listed at 9089 Baseline Road Suite 100, Rancho Cucamonga, CA 91730. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Mak's phone number?
The number on file is (909) 483-0505. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mak's NPI number?
Dr. Mak's National Provider Identifier is 1104936988. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Mak go to medical school?
Dr. Mak attended Michigan State University College of Osteopathic Medicine, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Mak been practicing?
Dr. Mak has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Mak confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mak. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.