Mary Guillermine Payawal Pascasio, MD - Medicare Family Medicine in Thousand Oaks, CA

Mary Guillermine Payawal Pascasio, MD is a medicare enrolled "Family Medicine - Adult Medicine" physician in Thousand Oaks, California. Her current practice location is 365 E Hillcrest Dr, Thousand Oaks, California. You can reach out to her office (for appointments etc.) via phone at (888) 515-3500.

Mary Guillermine Payawal Pascasio is licensed to practice in California (license number A113048) 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 1508037300.

Contact Information

Mary Guillermine Payawal Pascasio, MD
365 E Hillcrest Dr,
Thousand Oaks, CA 91360-5820
(888) 515-3500
(888) 515-3500

Map and Direction




Physician's Profile

Full NameMary Guillermine Payawal Pascasio
GenderFemale
SpecialityFamily Medicine - Adult Medicine
Location365 E Hillcrest Dr, Thousand Oaks, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1508037300
  • Provider Enumeration Date: 03/19/2008
  • Last Update Date: 12/14/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7416137443
  • Enrollment ID: I20110209000135

Medical Identifiers

Medical identifiers for Mary Guillermine Payawal Pascasio such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508037300NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207QA0505XFamily Medicine - Adult Medicine A113048 (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. Mary Guillermine Payawal Pascasio allows following entities to bill medicare on her behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770515280
PECOS PAC ID: 6002729175
Enrollment ID: O20031110000678

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. Mary Guillermine Payawal Pascasio 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
Mary Guillermine Payawal Pascasio, MD
5601 De Soto Ave,
Woodland Hills, CA 91367-6701

Ph: () -
Mary Guillermine Payawal Pascasio, MD
365 E Hillcrest Dr,
Thousand Oaks, CA 91360-5820

Ph: (888) 515-3500

Reviews and Comments


Family Medicine Doctors in Thousand Oaks, CA

Dr. Mohammed Taghi Rezai, D.O.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 455 E Thousand Oaks Blvd Ste B, Thousand Oaks, CA 91360
Phone: 818-232-5788    
Kelsey Lindsey, NP
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 227 W Janss Rd, Thousand Oaks, CA 91360
Phone: 805-795-7296    
Dr. Annapoorani Chellappan, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 365 E Hillcrest Dr, Thousand Oaks, CA 91360
Phone: 888-515-3500    
Francis M. Dawson, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 2100 Lynn Rd Ste 215, Thousand Oaks, CA 91360
Phone: 805-497-4974    Fax: 805-496-7636
Verna Silky Li Don Liss, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 612 E Janss Rd, Thousand Oaks, CA 91360
Phone: 805-373-0725    Fax: 805-373-0574
Dr. Phillip Faryar Yadegari, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 248 Hampshire Rd Ste 100, Thousand Oaks, CA 91361
Phone: 805-370-0040    Fax: 805-370-0041
Mike Oulashian, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 248 Hampshire Rd Ste 100, Thousand Oaks, CA 91361
Phone: 805-370-0040    

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.