Dr Gregory Fontana, MD - Medicare Thoracic Surgery in Thousand Oaks, CA

Dr Gregory Fontana, MD is a medicare enrolled "Thoracic Surgery (cardiothoracic Vascular Surgery)" physician in Thousand Oaks, California. He went to University Of California, Geffen School Of Medicine and graduated in 1984 and has 40 years of diverse experience with area of expertise as Thoracic Surgery. He is a member of the group practice Golden State Providers, A Medical Corporation and his current practice location is 215 W Janss Rd, Thousand Oaks, California. You can reach out to his office (for appointments etc.) via phone at (805) 852-9100.

Dr Gregory Fontana is licensed to practice in New York (license number 263949) 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 1508840570.

Contact Information

Dr Gregory Fontana, MD
215 W Janss Rd,
Thousand Oaks, CA 91360-1847
(805) 852-9100
Not Available

Map and Direction




Physician's Profile

Full NameDr Gregory Fontana
GenderMale
SpecialityThoracic Surgery
Experience40 Years
Location215 W Janss Rd, Thousand Oaks, 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 Gregory Fontana attended and graduated from University Of California, Geffen School Of Medicine in 1984
  NPI Data:
  • NPI Number: 1508840570
  • Provider Enumeration Date: 12/02/2005
  • Last Update Date: 02/09/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6507905247
  • Enrollment ID: I20091209000358

Medical Identifiers

Medical identifiers for Dr Gregory Fontana such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508840570NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208G00000XThoracic Surgery (cardiothoracic Vascular Surgery) 263949 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Los Robles Hospital & Medical CenterThousand oaks, CAHospital
West Hills Hospital & Medical CenterWest hills, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Golden State Providers, A Medical Corporation701221247558

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 Gregory Fontana allows following entities to bill medicare on his behalf.
Entity NameGolden State Providers, A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366859449
PECOS PAC ID: 7012212475
Enrollment ID: O20160223000539

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 Gregory Fontana 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 Gregory Fontana, MD
227 W Janss Rd, Suite 340,
Thousand Oaks, CA 91360-1848

Ph: (805) 852-9100
Dr Gregory Fontana, MD
215 W Janss Rd,
Thousand Oaks, CA 91360-1847

Ph: (805) 852-9100

Reviews and Comments


Thoracic Surgery (Cardiothoracic Vascular Surgery) Doctors in Thousand Oaks, CA

Dr. Asvin Minoo Ganapathi, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Accepting Medicare Assignments
Practice Location: 227 W Janss Rd Ste 340, Thousand Oaks, CA 91360
Phone: 805-852-9100    
Aamir S Shah, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Accepting Medicare Assignments
Practice Location: 227 W Janss Rd Ste 340, Thousand Oaks, CA 91360
Phone: 805-852-8100    
Nels Davis Carroll,
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Accepting Medicare Assignments
Practice Location: 227 W Janss Rd Ste 340, Thousand Oaks, CA 91360
Phone: 805-852-9100    
Dr. Gholam Reza Mohammadzadeh, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Accepting Medicare Assignments
Practice Location: 77 Rolling Oaks Dr Ste 202, Thousand Oaks, CA 91361
Phone: 805-379-6717    Fax: 805-379-6719
Dr. Philip Angelo Faraci, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Accepting Medicare Assignments
Practice Location: 215 W Janss Rd, Thousand Oaks, CA 91360
Phone: 805-852-9100    Fax: 805-852-9101

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.