Dr Dianna Mung-fung Mak, DO - Medicare Family Practice in Rancho Cucamonga, CA

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Dr Dianna Mung-fung Mak, DO is a medicare enrolled "Family Medicine" physician in Rancho Cucamonga, California. She went to Michigan State University College Of Osteopathic Medicine and graduated in 1981 and has 43 years of diverse experience with area of expertise as Family Practice. She is a member of the group practice Inland Physicians Service Inc and her current practice location is 9089 Baseline Road, Suite 100, Rancho Cucamonga, California. You can reach out to her office (for appointments etc.) via phone at (909) 483-0505.

Dr Dianna Mung-fung Mak is licensed to practice in California (license number 20A5237) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1104936988.

Contact Information

Dr Dianna Mung-fung Mak, DO
9089 Baseline Road, Suite 100,
Rancho Cucamonga, CA 91730
(909) 483-0505
(909) 483-0508

Map and Direction




Physician's Profile

Full NameDr Dianna Mung-fung Mak
GenderFemale
SpecialityFamily Practice
Experience43 Years
Location9089 Baseline Road, Rancho Cucamonga, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Dianna Mung-fung Mak attended and graduated from Michigan State University College Of Osteopathic Medicine in 1981
  NPI Data:
  • NPI Number: 1104936988
  • Provider Enumeration Date: 08/30/2006
  • Last Update Date: 01/11/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 1759318223
  • Enrollment ID: I20050726001065

Medical Identifiers

Medical identifiers for Dr Dianna Mung-fung Mak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1104936988NPI-NPPES
P00148996OtherCARR MEDICARE
00AX52370MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 20A5237 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Inland Physicians Service Inc27693860933

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Dianna Mung-fung Mak allows following entities to bill medicare on her behalf.
Entity NameInland Physicians Service Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083724850
PECOS PAC ID: 2769386093
Enrollment ID: O20031119001002
Entity NameInland Physicians Service Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083724850
PECOS PAC ID: 2769386093
Enrollment ID: O20040109001105

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Dianna Mung-fung Mak is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Dianna Mung-fung Mak, DO
9089 Baseline Road, Suite 100,
Rancho Cucamonga, CA 91730

Ph: (909) 483-0505		Dr Dianna Mung-fung Mak, DO
9089 Baseline Road, Suite 100,
Rancho Cucamonga, CA 91730

Ph: (909) 483-0505

Reviews and Comments


Family Medicine Doctors in Rancho Cucamonga, CA

Sandra Kay Force-obrowski, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 7777 Milliken Ave Ste 350, Rancho Cucamonga, CA 91730
Phone: 909-484-9182    Fax: 909-476-0050
Katty Chou,
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 5885 Haven Avenue, Rancho Cucamonga, CA 91737
Phone: 909-652-6000    
Shoaib U Naqvi, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 9190 Haven Ave, Suite 100 & 240, Rancho Cucamonga, CA 91730
Phone: 615-778-4066    Fax: 615-778-9114
Dr. Suniel S. Khemlani, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 11398 Kenyon Way Ste J, Rancho Cucamonga, CA 91701
Phone: 818-620-6193    
Dr. James Robert Brown, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8360 Red Oak St, Suite 103, Rancho Cucamonga, CA 91730
Phone: 909-980-1946    Fax: 909-980-1625
David John Gonzales, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9089 Baseline Rd Ste 100, Rancho Cucamonga, CA 91730
Phone: 602-751-5919    
Regina Wang, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10850 Arrow Rte, Rancho Cucamonga, CA 91730
Phone: 847-736-1008    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.