Roxanne Giselle G Lim, MD - Medicare Gastroenterology in Newport Beach, CA

Roxanne Giselle G Lim, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Newport Beach, California. She graduated from medical school in 2006 and has 18 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice United Medical Doctors and her current practice location is 400 Newport Center Dr, Suite 609, Newport Beach, California. You can reach out to her office (for appointments etc.) via phone at (949) 760-0398.

Roxanne Giselle G Lim is licensed to practice in California (license number A128032) 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 1154587368.

Contact Information

Roxanne Giselle G Lim, MD
400 Newport Center Dr, Suite 609,
Newport Beach, CA 92660-7601
(949) 760-0398
Not Available

Map and Direction




Physician's Profile

Full NameRoxanne Giselle G Lim
GenderFemale
SpecialityGastroenterology
Experience18 Years
Location400 Newport Center Dr, Newport Beach, 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:
  • Roxanne Giselle G Lim graduated from medical school in 2006
  NPI Data:
  • NPI Number: 1154587368
  • Provider Enumeration Date: 08/06/2008
  • Last Update Date: 04/11/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 8426172479
  • Enrollment ID: I20140728001623

Medical Identifiers

Medical identifiers for Roxanne Giselle G Lim such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154587368NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology A128032 (California)Primary
207RG0100XInternal Medicine - Gastroenterology 2012026122 (Missouri)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
United Medical Doctors2961305651109

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. Roxanne Giselle G Lim allows following entities to bill medicare on her behalf.
Entity NameUnited Medical Doctors
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770559981
PECOS PAC ID: 2961305651
Enrollment ID: O20040129001069

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. Roxanne Giselle G Lim 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
Roxanne Giselle G Lim, MD
400 Newport Center Dr, Suite 609,
Newport Beach, CA 92660-7601

Ph: (949) 760-0398
Roxanne Giselle G Lim, MD
400 Newport Center Dr, Suite 609,
Newport Beach, CA 92660-7601

Ph: (949) 760-0398

Reviews and Comments


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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.