Dr Stephen Chang, MD - Medicare Family Practice in Tustin, CA

Dr Stephen Chang, MD is a medicare enrolled "Family Medicine" physician in Tustin, California. He went to Rush Medical College Of Rush University and graduated in 2013 and has 11 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Regents Of The University Of California and his current practice location is 1451 Irvine Blvd, Tustin, California. You can reach out to his office (for appointments etc.) via phone at (714) 838-8878.

Dr Stephen Chang is licensed to practice in California (license number A164576) 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 1043715410.

Contact Information

Dr Stephen Chang, MD
1451 Irvine Blvd,
Tustin, CA 92780-3804
(714) 838-8878
Not Available

Map and Direction




Physician's Profile

Full NameDr Stephen Chang
GenderMale
SpecialityFamily Practice
Experience11 Years
Location1451 Irvine Blvd, Tustin, 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:
  • Dr Stephen Chang attended and graduated from Rush Medical College Of Rush University in 2013
  NPI Data:
  • NPI Number: 1043715410
  • Provider Enumeration Date: 03/28/2018
  • Last Update Date: 11/03/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9133523137
  • Enrollment ID: I20210813000162

Medical Identifiers

Medical identifiers for Dr Stephen Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043715410NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine A164576 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of California Irvine Medical CenterOrange, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Regents Of The University Of California559766364129

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 Stephen Chang allows following entities to bill medicare on his behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679521850
PECOS PAC ID: 5597663641
Enrollment ID: O20031226000376
Entity NameRegents Of The University Of
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366590762
PECOS PAC ID: 3779689518
Enrollment ID: O20070510000532

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 Stephen 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 Stephen Chang, MD
200 S Manchester Ave Ste 300,
Orange, CA 92868-3219

Ph: (714) 456-2986
Dr Stephen Chang, MD
1451 Irvine Blvd,
Tustin, CA 92780-3804

Ph: (714) 838-8878

Reviews and Comments


Family Medicine Doctors in Tustin, CA

Renee Heather Ballentine, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1451 Irvine Blvd, Tustin, CA 92780
Phone: 714-838-8878    
Dr. Myron Reiff, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 3002 Dow Ave, Suite 204, Tustin, CA 92780
Phone: 714-368-0800    Fax: 714-368-0900
Cathrin Hee Lim, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Hope Dr, Tustin, CA 92782
Phone: 714-247-0300    
Son Do, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 661 W 1st St Ste G, Tustin, CA 92780
Phone: 714-665-9890    Fax: 714-665-9891
William Robert Crumpton, M,D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14642 Newport Ave, Suite#200, Tustin, CA 92780
Phone: 714-669-4466    Fax: 714-669-4088
Charles Chol Bae Kim, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14642 Newport Ave Ste 105, Tustin, CA 92780
Phone: 714-831-1112    Fax: 714-486-2309

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.