David F Chang, MD - Medicare Ophthalmology in Los Altos, CA

David F Chang, MD is a medicare enrolled "Ophthalmology" physician in Los Altos, California. He went to Harvard Medical School and graduated in 1980 and has 44 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice David F Chang M D Inc and his current practice location is 762 Altos Oaks Dr, Los Altos, California. You can reach out to his office (for appointments etc.) via phone at (650) 948-9123.

David F Chang is licensed to practice in California (license number G045581) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1316966138.

Contact Information

David F Chang, MD
762 Altos Oaks Dr,
Los Altos, CA 94024-5434
(650) 948-9123
(650) 948-0563

Map and Direction




Physician's Profile

Full NameDavid F Chang
GenderMale
SpecialityOphthalmology
Experience44 Years
Location762 Altos Oaks Dr, Los Altos, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • David F Chang attended and graduated from Harvard Medical School in 1980
  NPI Data:
  • NPI Number: 1316966138
  • Provider Enumeration Date: 07/19/2006
  • Last Update Date: 05/05/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 5496776767
  • Enrollment ID: I20100331000256

Medical Identifiers

Medical identifiers for David F Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1316966138NPI-NPPES
00G455810MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology G045581 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
David F Chang M D Inc82241640742

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. David F Chang allows following entities to bill medicare on his behalf.
Entity NameDavid F Chang M D Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275857088
PECOS PAC ID: 8224164074
Enrollment ID: O20100331000299

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. David F Chang 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
David F Chang, MD
762 Altos Oaks Dr,
Los Altos, CA 94024-5434

Ph: (650) 948-9123
David F Chang, MD
762 Altos Oaks Dr,
Los Altos, CA 94024-5434

Ph: (650) 948-9123

Reviews and Comments


Ophthalmology Doctors in Los Altos, CA

Barry Y.p. Fung, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 4906 El Camino Real, Ste B, Los Altos, CA 94022
Phone: 650-967-7834    
Alejandro Zaffaroni, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 762 Altos Oaks Dr, Los Altos, CA 94024
Phone: 650-948-9123    Fax: 650-948-0563
Dr. Bryan Lee, MD, JD
Ophthalmology
Medicare: May Accept Medicare Assignments
Practice Location: 762 Altos Oaks Dr, Ste 1, Los Altos, CA 94024
Phone: 650-948-9123    Fax: 650-948-0563
Dr. Stephanie P Chen, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 762 Altos Oaks Dr, Los Altos, CA 94024
Phone: 650-948-9123    
Ajita Grewal, M.D.
Ophthalmology
Medicare: May Accept Medicare Assignments
Practice Location: 762 Altos Oaks Dr, Los Altos, CA 94024
Phone: 650-948-9123    Fax: 650-948-0563
Martin Frank Choy, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 81 Cody Ln, Los Altos, CA 94022
Phone: 650-387-7347    

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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.

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