Gregory Leung, PA - Medicare Physician Assistant in Fontana, CA

Gregory Leung, PA is a medicare enrolled "Physician Assistant" in Fontana, California. His current practice location is 9961 Sierra Ave, Fontana, California. You can reach out to his office (for appointments etc.) via phone at (909) 427-3910.

Gregory Leung is licensed to practice in California (license number PA10354) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1538236377.

Contact Information

Gregory Leung, PA
9961 Sierra Ave,
Fontana, CA 92335-6720
(909) 427-3910
Not Available

Map and Direction




Provider's Profile

Full NameGregory Leung
GenderMale
SpecialityPhysician Assistant
Location9961 Sierra Ave, Fontana, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1538236377
  • Provider Enumeration Date: 11/29/2006
  • Last Update Date: 09/23/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 4587614979
  • Enrollment ID: I20050124000751

Medical Identifiers

Medical identifiers for Gregory Leung such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538236377NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant PA10354 (California)Primary

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. Gregory Leung allows following entities to bill medicare on his behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770515280
PECOS PAC ID: 6002729175
Enrollment ID: O20031110000678

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. Gregory Leung 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
Gregory Leung, PA
9961 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-3910
Gregory Leung, PA
9961 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-3910

Reviews and Comments


Physician Assistant Nurses in Fontana, CA

Maralee Shadle, PA
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Ms. Cindy Ellen Tetzlaff, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 10650 Sierra Ave Ste B, Fontana, CA 92337
Phone: 909-550-3320    
Randall D Sellon, PA
Physician Assistant
Medicare: Not Enrolled in Medicare
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Christopher Blanchfield, PA
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Giuliana Cilliani, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 16465 Sierra Lakes Pkwy Ste 300, Fontana, CA 92336
Phone: 909-429-2864    
Vanessa M Michelena Basantes, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 4904 Tahan Way, Fontana, CA 92336
Phone: 909-561-5032    
Ann Marciano,
Physician Assistant
Medicare: Not Enrolled in Medicare
Practice Location: 5481 Tenderfoot Dr, Fontana, CA 92336
Phone: 909-239-2818    

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.