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DR. DIANNA MUNG-FUNG MAK DO
NPI 1104936988
Family Medicine in Rancho Cucamonga, CA

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment
9089 BASELINE ROAD, SUITE 100, RANCHO CUCAMONGA, CA 91730(909) 483-0505(909) 483-0508 Get Directions Write a Review

NPPES record last updated: January 11, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Dianna Mung-fung Mak Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DIANNA MUNG-FUNG MAK DO (NPI 1104936988) is an individual family medicine provider in Rancho Cucamonga, California, licensed in California (20A5237) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Michigan State University College Of Osteopathic Medicine (1981).

NPPES Registry Identity

NPI1104936988
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. DIANNA MUNG-FUNG MAKCredential: DO
Location Address9089 BASELINE ROAD, SUITE 100Rancho Cucamonga, CA 91730
Mailing Address9089 Baseline Road, Suite 100Rancho Cucamonga, CA 91730 · (909) 483-0505 · Fax (909) 483-0508
Phone(909) 483-0505
Fax(909) 483-0508
Sole ProprietorNo
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 1981
Enumeration DateAugust 30, 2006
Last NPPES UpdateJanuary 11, 2024
NPPES CertifiedJanuary 11, 2024
✔ NPI 1104936988 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A5237
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
9089 BASELINE ROAD, Rancho Cucamonga, CA 91730
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Other Identifiers 2

OtherP00148996CA · Rr Medicare
Medicaid00AX52370CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Dianna Mung-fung Mak Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759318223
PECOS Enrollment IDI20111013000560
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91730 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

INLAND PHYSICIANS SERVICE INC
Family Medicine
9089 BASELINE ROAD, SUITE 100
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 483-0505

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dianna Mak's NPI number?

The NPI number for Dianna Mak is 1104936988. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Dianna Mak located?

Dianna Mak practices at 9089 Baseline Road Suite 100, Rancho Cucamonga, CA 91730. The listed phone number is (909) 483-0505.

What is Dianna Mak's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Dianna Mak enrolled in Medicare?

Yes. Dianna Mak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Dianna Mak was last updated on January 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.