Thomas Onyia, MD - Medicare Anesthesiology in San Diego, CA

Thomas Onyia, MD is a medicare enrolled "Anesthesiology" physician in San Diego, California. He went to University Of California, San Diego School Of Medicine and graduated in 2015 and has 9 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Western Anesthesia Medical Associates Inc and his current practice location is 200 W Arbor Dr # Mc8770, San Diego, California. You can reach out to his office (for appointments etc.) via phone at (310) 528-9922.

Thomas Onyia is licensed to practice in California (license number 149440) 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 1902283443.

Contact Information

Thomas Onyia, MD
200 W Arbor Dr # Mc8770,
San Diego, CA 92103-1911
(310) 528-9922
(619) 543-5424

Map and Direction




Physician's Profile

Full NameThomas Onyia
GenderMale
SpecialityAnesthesiology
Experience9 Years
Location200 W Arbor Dr # Mc8770, San Diego, 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:
  • Thomas Onyia attended and graduated from University Of California, San Diego School Of Medicine in 2015
  NPI Data:
  • NPI Number: 1902283443
  • Provider Enumeration Date: 05/05/2015
  • Last Update Date: 12/06/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2668704115
  • Enrollment ID: I20191101001472

Medical Identifiers

Medical identifiers for Thomas Onyia such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902283443NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery R74956 (Arizona)Secondary
207L00000XAnesthesiology 149440 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mission Hospital Regional Med CenterMission viejo, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Western Anesthesia Medical Associates Inc701290221649

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. Thomas Onyia allows following entities to bill medicare on his 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
Entity NameWestern Anesthesia Medical Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1497796320
PECOS PAC ID: 7012902216
Enrollment ID: O20040416001498

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. Thomas Onyia 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
Thomas Onyia, MD
27700 Medical Center Rd,
Mission Viejo, CA 92691-6426

Ph: (310) 528-9922
Thomas Onyia, MD
200 W Arbor Dr # Mc8770,
San Diego, CA 92103-1911

Ph: (310) 528-9922

Reviews and Comments


Anesthesiology Doctors in San Diego, CA

Shawn Raveenth Vedamani, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 800-926-8273    Fax: 888-539-8781
Michael Conrad Weber, DO
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Medicare: Accepting Medicare Assignments
Practice Location: 34800 Bob Wilson Drive, San Diego, CA 92134
Phone: 619-532-6471    
Susanna Byrne, D.O.
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Medicare: Medicare Enrolled
Practice Location: 34800 Bob Wilson Dr, San Diego, CA 92134
Phone: 619-532-6400    
Dr. Paige Tsuda, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 800-926-8273    
Thomas J. Pietuch, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 3626 Ruffin Rd, San Diego, CA 92123
Phone: 858-565-9666    Fax: 858-565-9441
Dr. Ching-rong Cheng, MD
Anesthesiology
Medicare: Not Enrolled in Medicare
Practice Location: Ucsd Medical Center, 200 West Arbor Drive Mc 0801, San Diego, CA 92103
Phone: 619-543-5720    
Dr. Jeffrey Koji Sakihara, M.D.
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 3626 Ruffin Rd, San Diego, CA 92123
Phone: 858-565-9666    Fax: 858-565-9441

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.