Ester Kwok, MD - Medicare Internal Medicine in Los Gatos, CA

Ester Kwok, MD is a medicare enrolled "Internal Medicine" physician in Los Gatos, California. She went to University Of Texas Medical School At Houston and graduated in 1989 and has 35 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Silicon Valley Medical Development Llc and her current practice location is 825 Pollard Rd, Suite 108, Los Gatos, California. You can reach out to her office (for appointments etc.) via phone at (408) 370-3774.

Ester Kwok is licensed to practice in California (license number A050957) 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 1790886034.

Contact Information

Ester Kwok, MD
825 Pollard Rd, Suite 108,
Los Gatos, CA 95032-1435
(408) 370-3774
(408) 370-7011

Map and Direction




Physician's Profile

Full NameEster Kwok
GenderFemale
SpecialityInternal Medicine
Experience35 Years
Location825 Pollard Rd, Los Gatos, 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:
  • Ester Kwok attended and graduated from University Of Texas Medical School At Houston in 1989
  NPI Data:
  • NPI Number: 1790886034
  • Provider Enumeration Date: 09/26/2006
  • Last Update Date: 06/11/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 6901978261
  • Enrollment ID: I20080701000348

Medical Identifiers

Medical identifiers for Ester Kwok such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1790886034NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A050957 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
El Camino HospitalMountain view, CAHospital
Good Samaritan HospitalSan jose, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Silicon Valley Medical Development Llc6103115183128

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. Ester Kwok allows following entities to bill medicare on her behalf.
Entity NameUniversity Healthcare Alliance
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760531198
PECOS PAC ID: 6305748799
Enrollment ID: O20040126000292
Entity NameSilicon Valley Medical Development Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164880761
PECOS PAC ID: 6103115183
Enrollment ID: O20160513001617

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. Ester Kwok 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
Ester Kwok, MD
825 Pollard Rd, Suite 108,
Los Gatos, CA 95032-1435

Ph: (408) 370-3774
Ester Kwok, MD
825 Pollard Rd, Suite 108,
Los Gatos, CA 95032-1435

Ph: (408) 370-3774

Reviews and Comments


Internal Medicine Doctors in Los Gatos, CA

Dr. Allison Lee Remesz, D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14251 Winchester Blvd Ste 200, Los Gatos, CA 95032
Phone: 408-426-5540    
Dr. William B Ricks, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 17480 High St, Los Gatos, CA 95030
Phone: 408-497-2472    Fax: 408-354-5543
Dr. Catherine Anne Grellet, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15251 National Ave, Suite 104, Los Gatos, CA 95032
Phone: 408-358-7360    Fax: 408-358-7357
Melissa Zheng Yan Wu, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15215 National Ave, Suite 200, Los Gatos, CA 95032
Phone: 408-358-1841    Fax: 408-358-3562
Dr. Kenneth Jay Silver, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 700 W Parr Ave, Suite R, Los Gatos, CA 95032
Phone: 408-857-4061    
Edward Kern Wong, MD
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 14911 National Ave, Ste 3, Los Gatos, CA 95032
Phone: 408-356-9121    Fax: 408-356-4628
Dr. Michael J Tierney, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15400 Los Gatos Blvd, Los Gatos, CA 95032
Phone: 408-730-6200    

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.