Ann Y Chang, MD - Internal Medicine in Fairfield, CA

Ann Y Chang, MD is a Internal Medicine physician based in Fairfield, California. Ann Y Chang is licensed to practice in California (license number A63839) and her current practice location is 1550 Gateway Blvd, Fairfield, California. She can be reached at her office (for appointments etc.) via phone at (707) 427-4000.

NPI number for Ann Y Chang is 1952437527 and her current mailing address is 1800 Harrison St Fl 7, Oakland, California. She does not participate in medicare program and thus does not accept medicare assignments. Her NPI Number is 1952437527.

Contact Information

Ann Y Chang, MD
1550 Gateway Blvd,
Fairfield, CA 94533-6901
(707) 427-4000
Not Available

Map and Direction




Physician's Profile

Full NameAnn Y Chang
GenderFemale
SpecialityInternal Medicine
Location1550 Gateway Blvd, Fairfield, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. She may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1952437527
  • Provider Enumeration Date: 02/26/2007
  • Last Update Date: 07/08/2007

Medical Identifiers

Medical identifiers for Ann Y Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1952437527NPI-NPPES
00A638390MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A63839 (California)Primary

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. Ann Y Chang is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Ann Y Chang, MD
1800 Harrison St Fl 7,
Oakland, CA 94612-3429

Ph: (510) 625-6262
Ann Y Chang, MD
1550 Gateway Blvd,
Fairfield, CA 94533-6901

Ph: (707) 427-4000

Reviews and Comments


Internal Medicine Doctors in Fairfield, CA

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Phone: 707-423-3000    

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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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