Ray Hsiao, MD - Medicare Internal Medicine in Hacienda Heights, CA

Ray Hsiao, MD is a medicare enrolled "Internal Medicine" physician in Hacienda Heights, California. He went to University Of California, San Diego School Of Medicine and graduated in 1989 and has 35 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 1850 S Azusa Ave, Suite 308, Hacienda Heights, California. You can reach out to his office (for appointments etc.) via phone at (626) 854-7866.

Ray Hsiao is licensed to practice in California (license number G70571) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1164507869.

Contact Information

Ray Hsiao, MD
1850 S Azusa Ave, Suite 308,
Hacienda Heights, CA 91745-6813
(626) 854-7866
(626) 820-0666

Map and Direction




Physician's Profile

Full NameRay Hsiao
GenderMale
SpecialityInternal Medicine
Experience35 Years
Location1850 S Azusa Ave, Hacienda Heights, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ray Hsiao attended and graduated from University Of California, San Diego School Of Medicine in 1989
  NPI Data:
  • NPI Number: 1164507869
  • Provider Enumeration Date: 10/25/2006
  • Last Update Date: 07/09/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 4183537731
  • Enrollment ID: I20090925000451

Medical Identifiers

Medical identifiers for Ray Hsiao such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164507869NPI-NPPES
00G705711MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G70571 (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. Ray Hsiao allows following entities to bill medicare on his behalf.
Entity NameGarvey Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124078860
PECOS PAC ID: 5991777591
Enrollment ID: O20040812000449
Entity NameRay Hsiao Md Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710062401
PECOS PAC ID: 6608922042
Enrollment ID: O20090925000458
Entity NameFlorence Wellness Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336771088
PECOS PAC ID: 9739518895
Enrollment ID: O20200411000315

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. Ray Hsiao 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
Ray Hsiao, MD
1850 S Azusa Ave, Suite 308,
Hacienda Heights, CA 91745-6813

Ph: (626) 854-7866
Ray Hsiao, MD
1850 S Azusa Ave, Suite 308,
Hacienda Heights, CA 91745-6813

Ph: (626) 854-7866

Reviews and Comments


Internal Medicine Doctors in Hacienda Heights, CA

Mr. Anthony C. Chen, M.D.
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 1850 S Azusa Ave, Suite 102, Hacienda Heights, CA 91745
Phone: 626-912-2682    Fax: 626-912-2684
Dr. Daniel Chung Ann Choo, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17134 Colima Rd, Ste #e, Hacienda Heights, CA 91745
Phone: 626-820-0603    Fax: 626-820-0602
Jaw-huei Chen, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1850 S Azusa Ave, Suite 205, Hacienda Heights, CA 91745
Phone: 626-964-2880    Fax: 626-964-2834
Dr. Omar Velasco, M.D.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1206 Barford Ave, Hacienda Heights, CA 91745
Phone: 626-392-1432    
Shang Cheng Wu, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3141 S Hacienda Blvd, Hacienda Heights, CA 91745
Phone: 626-937-6663    Fax: 626-937-6653
David Michael Aron, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 3180 Colima Rd, Suite A, Hacienda Heights, CA 91745
Phone: 626-968-0547    Fax: 626-968-7599

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.