Mr Thomas C O'neil, MD - Medicare Ophthalmology in Tracy, CA

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Mr Thomas C O'neil, MD is a medicare enrolled "Ophthalmology" physician in Tracy, California. He went to University Of Iowa, Rj & L Carver College Of Medicine and graduated in 1978 and has 48 years of diverse experience with area of expertise as Ophthalmology. His current practice location is 303 W Eaton Ave, Tracy, California. You can reach out to his office (for appointments etc.) via phone at (209) 836-1155.

Mr Thomas C O'neil is licensed to practice in California (license number A34142) 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 1831162999.

Contact Information

Mr Thomas C O'neil, MD
303 W Eaton Ave,
Tracy, CA 95376
(209) 836-1155
(209) 836-0478

Map and Direction




Physician's Profile

Full NameMr Thomas C O'neil
GenderMale
SpecialityOphthalmology
Experience48 Years
Location303 W Eaton Ave, Tracy, 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:
  • Mr Thomas C O'neil attended and graduated from University Of Iowa, Rj & L Carver College Of Medicine in 1978
  NPI Data:
  • NPI Number: 1831162999
  • Provider Enumeration Date: 02/09/2006
  • Last Update Date: 01/06/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 7315002888
  • Enrollment ID: I20110513000025

Medical Identifiers

Medical identifiers for Mr Thomas C O'neil such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831162999NPI-NPPES
00A341420MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology A34142 (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. Mr Thomas C O'neil allows following entities to bill medicare on his behalf.
Entity NameThomas C O Neil Md Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154639896
PECOS PAC ID: 6002094257
Enrollment ID: O20110617000258

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. Mr Thomas C O'neil 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
Mr Thomas C O'neil, MD
Po Box 986,
Woodbridge, CA 95258-0986

Ph: (209) 836-1155		Mr Thomas C O'neil, MD
303 W Eaton Ave,
Tracy, CA 95376

Ph: (209) 836-1155

Reviews and Comments


Ophthalmology Doctors in Tracy, CA

Dr. Jordan M Usunov, MD
Ophthalmology
Medicare: Medicare Enrolled
Practice Location: 1540 N Tracy Blvd, A, Tracy, CA 95376
Phone: 209-836-2223    Fax: 209-836-2530
Yingna Liu, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 2160 W Grant Line Rd Ste 240, Tracy, CA 95377
Phone: 800-573-8462    Fax: 925-623-5090
Pamela Y Tsuchiya, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 2160 W Grant Line Rd, Suite 100, Tracy, CA 95377
Phone: 209-835-2227    Fax: 209-835-2250

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.