Waii Mak, MD - Medicare Internal Medicine in Santa Clara, CA

Waii Mak, MD is a medicare enrolled "Hospitalist" physician in Santa Clara, California. She went to New York Medical College and graduated in 1996 and has 28 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Permanente Medical Group Inc and her current practice location is 900 Kiely Blvd, Santa Clara, California. You can reach out to her office (for appointments etc.) via phone at (408) 236-6400.

Waii Mak is licensed to practice in California (license number A72101) 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 1699825406.

Contact Information

Waii Mak, MD
900 Kiely Blvd,
Santa Clara, CA 95051-5329
(408) 236-6400
Not Available

Map and Direction




Physician's Profile

Full NameWaii Mak
GenderFemale
SpecialityInternal Medicine
Experience28 Years
Location900 Kiely Blvd, Santa Clara, 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:
  • Waii Mak attended and graduated from New York Medical College in 1996
  NPI Data:
  • NPI Number: 1699825406
  • Provider Enumeration Date: 01/12/2007
  • Last Update Date: 12/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 1850570300
  • Enrollment ID: I20110129000010

Medical Identifiers

Medical identifiers for Waii Mak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699825406NPI-NPPES
00A721010MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist A72101 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Watsonville Community HospitalWatsonville, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Permanente Medical Group Inc89219102258376

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. Waii Mak allows following entities to bill medicare on her behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710

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. Waii 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
Waii Mak, MD
1800 Harrison St Fl 7,
Oakland, CA 94612-3466

Ph: (510) 625-6262
Waii Mak, MD
900 Kiely Blvd,
Santa Clara, CA 95051-5329

Ph: (408) 236-6400

Reviews and Comments


Hospitalist Doctors in Santa Clara, CA

David Clarke, MD
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Medicare: Medicare Enrolled
Practice Location: 900 Kiely Blvd, Santa Clara, CA 95051
Phone: 408-236-6400    
Kent Yu Feng, MD
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Practice Location: 710 Lawrence Expy Dept 348, Santa Clara, CA 95051
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Joseph S. Chou, MD
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Phone: 408-236-6400    
Farhana Ahmed, MD
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Phone: 408-851-7222    
Gurpreet K. Ahluwalia, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 900 Kiely Blvd, Santa Clara, CA 95051
Phone: 408-236-6400    
Smita V. Gavaskar, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 900 Kiely Blvd, Santa Clara, CA 95051
Phone: 408-236-6400    
Anna Park, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 700 Lawrence Expy, Hospital Medicine 3rd Floor, Santa Clara, CA 95051
Phone: 408-851-7679    

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.