Shirley Liu Underwood, DO - Medicare Pediatrics in Oxnard, CA

Shirley Liu Underwood, DO is a medicare enrolled "Pediatrics" physician in Oxnard, California. Her current practice location is 2000 Outlet Center Dr, Suite 110, Oxnard, California. You can reach out to her office (for appointments etc.) via phone at (805) 604-4588.

Shirley Liu Underwood is licensed to practice in California (license number 20A11781) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1497919872.

Contact Information

Shirley Liu Underwood, DO
2000 Outlet Center Dr, Suite 110,
Oxnard, CA 93036-0607
(805) 604-4588
(805) 604-7469

Map and Direction




Physician's Profile

Full NameShirley Liu Underwood
GenderFemale
SpecialityPediatrics
Location2000 Outlet Center Dr, Oxnard, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1497919872
  • Provider Enumeration Date: 07/15/2008
  • Last Update Date: 10/18/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 3274705934
  • Enrollment ID: I20111003000204

Medical Identifiers

Medical identifiers for Shirley Liu Underwood such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1497919872NPI-NPPES
R70090OtherAZTRAINING PERMIT

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 20A11781 (California)Secondary
208000000XPediatrics R70090 (Arizona)Secondary
208000000XPediatrics 20A11781 (California)Primary

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. Shirley Liu Underwood allows following entities to bill medicare on her behalf.
Entity NameCounty Of Ventura
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629167457
PECOS PAC ID: 7911810171
Enrollment ID: O20031112000587

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. Shirley Liu Underwood 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
Shirley Liu Underwood, DO
2000 Outlet Center Dr, Suite 110,
Oxnard, CA 93036-0607

Ph: (805) 604-4588
Shirley Liu Underwood, DO
2000 Outlet Center Dr, Suite 110,
Oxnard, CA 93036-0607

Ph: (805) 604-4588

Reviews and Comments


Pediatrics Doctors in Oxnard, CA

Dr. Roshan Ara Shah,
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 1700 N Rose Ave Ste 310, Oxnard, CA 93030
Phone: 805-983-1566    Fax: 805-983-3194
Anna Sandstrom, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 2000 Outlet Center Dr, Suite 110, Oxnard, CA 93036
Phone: 805-604-4588    
Kelly Marie Ochoa, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 1000 Town Center Dr Ste 300, Oxnard, CA 93036
Phone: 559-797-1686    
Javier Orosco, MD
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 977 W Seventh St, Oxnard, CA 93030
Phone: 805-486-4400    Fax: 805-486-2750
Kaelan Elise Davis, MD
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 2200 E Gonzales Rd, Oxnard, CA 93036
Phone: 833-574-2273    
Shiang L. Do, D.O.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 963 W 7th St, Oxnard, CA 93030
Phone: 805-487-9897    
Dr. Lilia Fernandez Coppa, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 451 W Gonzales Rd Ste 130, Oxnard, CA 93036
Phone: 805-981-7691    Fax: 805-981-7676

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.