Hazel Abaya, - Medicare Internal Medicine in Thousand Oaks, CA

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Hazel Abaya, is a medicare enrolled "Internal Medicine" physician in Thousand Oaks, California. She graduated from medical school in 2016 and has 10 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Chest And Critical Care Consultants A Medical Group and her current practice location is 2190 Lynn Rd Ste 300, Thousand Oaks, California. You can reach out to her office (for appointments etc.) via phone at (805) 370-4802.

Hazel Abaya is licensed to practice in California (license number A169439) 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 1780116186.

Contact Information

Hazel Abaya,
2190 Lynn Rd Ste 300,
Thousand Oaks, CA 91360-8024
(805) 370-4802
Not Available

Map and Direction




Physician's Profile

Full NameHazel Abaya
GenderFemale
SpecialityInternal Medicine
Experience10 Years
Location2190 Lynn Rd Ste 300, Thousand Oaks, 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:
  • Hazel Abaya graduated from medical school in 2016
  NPI Data:
  • NPI Number: 1780116186
  • Provider Enumeration Date: 04/03/2017
  • Last Update Date: 03/18/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 8325319742
  • Enrollment ID: I20210528001728

Medical Identifiers

Medical identifiers for Hazel Abaya such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1780116186NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A169439 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Uci Health-orangeOrange, CAHospital
Ahmc Anaheim Regional Medical CenterAnaheim, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Chest And Critical Care Consultants A Medical Group791198796171

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. Hazel Abaya allows following entities to bill medicare on her behalf.
Entity NameChest and Critical Care Consultants a Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598852717
PECOS PAC ID: 7911987961
Enrollment ID: O20040721001161
Entity NameHospitalist Medicine Physicians of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184663965
PECOS PAC ID: 8426062027
Enrollment ID: O20060202000956
Entity NameInpatient Specialists of California PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952792475
PECOS PAC ID: 3476864448
Enrollment ID: O20150617000915
Entity NameAdvantage Hospitalists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801269881
PECOS PAC ID: 7810291531
Enrollment ID: O20160201000977

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. Hazel Abaya 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
Hazel Abaya,
2190 Lynn Rd Ste 300,
Thousand Oaks, CA 91360-8024

Ph: Not Available		Hazel Abaya,
2190 Lynn Rd Ste 300,
Thousand Oaks, CA 91360-8024

Ph: (805) 370-4802

Reviews and Comments


Internal Medicine Doctors in Thousand Oaks, CA

Dr. Nusayba Manal Ahmed, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 215 W Janss Rd, Thousand Oaks, CA 91360
Phone: 805-852-9229    
Dr. Anthony Capparelli, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 375 Rolling Oaks Dr, Suite 100, Thousand Oaks, CA 91361
Phone: 805-497-7775    Fax: 805-557-1074
John Y. Hess, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2220 Lynn Rd, 201, Thousand Oaks, CA 91360
Phone: 805-494-9494    Fax: 805-374-9994
Dr. David Paul Pryor, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1683 Calle Rochelle, Thousand Oaks, CA 91360
Phone: 805-558-7059    
Dzenana Cabaravdic, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 215 W Janss Rd, Thousand Oaks, CA 91360
Phone: 805-497-2727    
Dr. Saibal Kar, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 227 W Janss Rd Ste 340, Thousand Oaks, CA 91360
Phone: 805-852-9100    Fax: 805-852-9101
Lauren Hanna Beshay, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 100 Moody Ct Ste 200, Thousand Oaks, CA 91360
Phone: 805-418-3500    

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.