Dr Olivia Hui-chiun Chang, MD, MPH - Medicare Obstetrics/gynecology in Orange, CA

Dr Olivia Hui-chiun Chang, MD, MPH is a medicare enrolled "Obstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery" physician in Orange, California. She went to Tulane University School Of Medicine and graduated in 2013 and has 11 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Uci Department Of Urology and her current practice location is 101 The City Dr S, Orange, California. You can reach out to her office (for appointments etc.) via phone at (714) 880-7812.

Dr Olivia Hui-chiun Chang is licensed to practice in California (license number A182272) 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 1881936862.

Contact Information

Dr Olivia Hui-chiun Chang, MD, MPH
101 The City Dr S,
Orange, CA 92868-3201
(714) 880-7812
Not Available

Map and Direction




Physician's Profile

Full NameDr Olivia Hui-chiun Chang
GenderFemale
SpecialityObstetrics/gynecology
Experience11 Years
Location101 The City Dr S, Orange, 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:
  • Dr Olivia Hui-chiun Chang attended and graduated from Tulane University School Of Medicine in 2013
  NPI Data:
  • NPI Number: 1881936862
  • Provider Enumeration Date: 03/18/2013
  • Last Update Date: 02/03/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2264758762
  • Enrollment ID: I20221017003168

Medical Identifiers

Medical identifiers for Dr Olivia Hui-chiun Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881936862NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology MD61185981 (Washington)Secondary
207V00000XObstetrics & Gynecology A182272 (California)Secondary
207VF0040XObstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery A182272 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of California Irvine Medical CenterOrange, CAHospital
Mission Hospital Regional Med CenterMission viejo, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Uci Department Of Urology690179923828

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. Dr Olivia Hui-chiun Chang allows following entities to bill medicare on her behalf.
Entity NameUci Department Of Urology
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1255398533
PECOS PAC ID: 6901799238
Enrollment ID: O20040202001148

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. Dr Olivia Hui-chiun 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
Dr Olivia Hui-chiun Chang, MD, MPH
200 S Manchester Ave Ste 300,
Orange, CA 92868-3219

Ph: (714) 456-2986
Dr Olivia Hui-chiun Chang, MD, MPH
101 The City Dr S,
Orange, CA 92868-3201

Ph: (714) 880-7812

Reviews and Comments


Obstetrics & Gynecology Doctors in Orange, CA

Dr. Laura Catherine Skoczylas, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Building 56, Department Of Ob/gyn, Orange, CA 92868
Phone: 714-456-8224    Fax: 714-456-8360
Gelareh Renee Nikpour-heravi, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 2501 E Chapman Ave Ste 201-202, Orange, CA 92869
Phone: 714-282-1892    Fax: 714-289-3906
Jennefer Allyn Russo, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 700 S. Tustin Street, Orange, CA 92866
Phone: 714-633-6373    Fax: 714-532-2522
Dr. Madushka Yohan De Zoysa, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-880-7812    
Shruti Ria Dasgupta, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 2501 E Chapman Ave Ste 400, Orange, CA 92869
Phone: 714-628-6642    
Dr. Tamera Hatfield, MD, PHD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 200 S. Manchester Ave, Suite 600, Orange, CA 92868
Phone: 714-456-2911    Fax: 714-456-8383
Dr. Stephanie J. Warsheski, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 3800 W Chapman Ave Ste 3400, Orange, CA 92868
Phone: 714-456-7733    

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.