Dr Warren Woo, MD - Medicare Family Practice in Placentia, CA

Dr Warren Woo, MD is a medicare enrolled "Family Medicine" physician in Placentia, California. He went to University Of Texas Medical Branch At Galveston and graduated in 1980 and has 44 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Pih Health Physicians and his current practice location is 1275 N Rose Dr, Suite 138, Placentia, California. You can reach out to his office (for appointments etc.) via phone at (714) 961-1635.

Dr Warren Woo is licensed to practice in California (license number C40927) 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 1447340336.

Contact Information

Dr Warren Woo, MD
1275 N Rose Dr, Suite 138,
Placentia, CA 92870-3941
(714) 961-1635
(714) 961-1679

Map and Direction




Physician's Profile

Full NameDr Warren Woo
GenderMale
SpecialityFamily Practice
Experience44 Years
Location1275 N Rose Dr, Placentia, 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 Warren Woo attended and graduated from University Of Texas Medical Branch At Galveston in 1980
  NPI Data:
  • NPI Number: 1447340336
  • Provider Enumeration Date: 10/13/2006
  • Last Update Date: 09/30/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 4183782725
  • Enrollment ID: I20081025000011

Medical Identifiers

Medical identifiers for Dr Warren Woo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447340336NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine C40927 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Pih Health Hospital-whittierWhittier, CAHospital
St Jude Medical CenterFullerton, CAHospital
Placentia Linda HospitalPlacentia, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Pih Health Physicians8426951328445

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 Warren Woo allows following entities to bill medicare on his behalf.
Entity NamePih Health Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1609233899
PECOS PAC ID: 8426951328
Enrollment ID: O20040128001177

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 Warren Woo 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 Warren Woo, MD
1233 W Gardena Blvd, #205 Practi-cal Solutions Inc,
Gardena, CA 90247

Ph: (310) 327-9966
Dr Warren Woo, MD
1275 N Rose Dr, Suite 138,
Placentia, CA 92870-3941

Ph: (714) 961-1635

Reviews and Comments


Family Medicine Doctors in Placentia, CA

Lina Kim, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1325 N Rose Dr Ste 210, Placentia, CA 92870
Phone: 714-203-1799    Fax: 714-203-1716
Mary Caizza Cerni, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1325 N Rose Dr, Suite 203, Placentia, CA 92870
Phone: 714-529-5674    Fax: 714-529-6122
Rachel Wang, PA-C
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 501 Whitten Way, Placentia, CA 92870
Phone: 909-520-0088    
Dr. Helen Liu Ha, DO
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 770 S Placentia Ave, Placentia, CA 92870
Phone: 714-223-6000    
Dr. Joseph Milton Longnecker, D.O.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1041 E. Yorba Linda Blvd., Suite 306, Placentia, CA 92870
Phone: 714-577-9500    Fax: 714-577-9504
Rajnish Birla, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1041 E Yorba Linda Blvd Ste 306, Placentia, CA 92870
Phone: 714-577-9500    Fax: 714-577-9504

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.