Dr Thomas C Hwang, MD - Medicare Internal Medicine in Tustin, CA

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Dr Thomas C Hwang, MD is a medicare enrolled "Internal Medicine" physician in Tustin, California. He went to Saint Louis University School Of Medicine and graduated in 2003 and has 21 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Tustin Irvine Internal Medicine Group Inc. and his current practice location is 17400 Irvine Blvd, Suite F, Tustin, California. You can reach out to his office (for appointments etc.) via phone at (714) 838-5610.

Dr Thomas C Hwang is licensed to practice in California (license number A91056) 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 1124039722.

Contact Information

Dr Thomas C Hwang, MD
17400 Irvine Blvd, Suite F,
Tustin, CA 92780-3030
(714) 838-5610
Not Available

Map and Direction




Physician's Profile

Full NameDr Thomas C Hwang
GenderMale
SpecialityInternal Medicine
Experience21 Years
Location17400 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 Thomas C Hwang attended and graduated from Saint Louis University School Of Medicine in 2003
  NPI Data:
  • NPI Number: 1124039722
  • Provider Enumeration Date: 08/10/2006
  • Last Update Date: 06/10/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 1951306646
  • Enrollment ID: I20061002000690

Medical Identifiers

Medical identifiers for Dr Thomas C Hwang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124039722NPI-NPPES
W1779OtherCAGROUP ID
1689633125OtherCAGROUP NPI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A91056 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital
St Joseph HospitalOrange, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Tustin Irvine Internal Medicine Group Inc.98301348574

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 Thomas C Hwang allows following entities to bill medicare on his behalf.
Entity NameTustin Irvine Internal Medicine Group Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689633125
PECOS PAC ID: 9830134857
Enrollment ID: O20050621000648

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 Thomas C Hwang 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 Thomas C Hwang, MD
17400 Irvine Blvd, Suite F,
Tustin, CA 92780-3030

Ph: (714) 838-5610		Dr Thomas C Hwang, MD
17400 Irvine Blvd, Suite F,
Tustin, CA 92780-3030

Ph: (714) 838-5610

Reviews and Comments


Internal Medicine Doctors in Tustin, CA

Dr. Huong T Duong, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17400 Irvine Blvd, Suite F, Tustin, CA 92780
Phone: 714-838-5610    
Dr. Susan L Ban, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 17400 Irvine Blvd, Suite F, Tustin, CA 92780
Phone: 714-838-5610    
Jeremy Lam, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2492 Walnut Ave Ste 100, Tustin, CA 92780
Phone: 714-709-8000    Fax: 714-709-8080
Dr. James A Grimes, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 17400 Irvine Blvd, Suite F, Tustin, CA 92780
Phone: 714-838-5610    
Dr. Pin-hung Hsieh, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 13522 Newport Ave Ste 102, Tustin, CA 92780
Phone: 714-573-8200    Fax: 714-573-9401
Madonna A Nicolai, CFNP
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 14351 Myford Rd, Suite B, Tustin, CA 92780
Phone: 714-550-9990    Fax: 714-550-1226

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.