Gregory Yervant Warner, DO - Medicare Infectious Disease in Vacaville, CA

Gregory Yervant Warner, DO is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Vacaville, California. He graduated from medical school in 2005 and has 19 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice Northbay Healthcare Group and his current practice location is 1010 Nut Tree Rd, Suite 100b, Vacaville, California. You can reach out to his office (for appointments etc.) via phone at (707) 624-7999.

Gregory Yervant Warner is licensed to practice in California (license number 20A9902) 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 1073704326.

Contact Information

Gregory Yervant Warner, DO
1010 Nut Tree Rd, Suite 100b,
Vacaville, CA 95687-4172
(707) 624-7999
(707) 624-7998

Map and Direction




Physician's Profile

Full NameGregory Yervant Warner
GenderMale
SpecialityInfectious Disease
Experience19 Years
Location1010 Nut Tree Rd, Vacaville, 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:
  • Gregory Yervant Warner graduated from medical school in 2005
  NPI Data:
  • NPI Number: 1073704326
  • Provider Enumeration Date: 08/01/2007
  • Last Update Date: 09/17/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 8628131281
  • Enrollment ID: I20090108000668

Medical Identifiers

Medical identifiers for Gregory Yervant Warner such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1073704326NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 20A9902 (California)Secondary
207RI0200XInternal Medicine - Infectious Disease 20A9902 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northbay Medical CenterFairfield, CAHospital
Sutter Medical Center, SacramentoSacramento, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Northbay Healthcare Group0042122244244

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. Gregory Yervant Warner allows following entities to bill medicare on his behalf.
Entity NameNorthbay Healthcare Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821147786
PECOS PAC ID: 0042122244
Enrollment ID: O20031105000409

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. Gregory Yervant Warner 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
Gregory Yervant Warner, DO
1010 Nut Tree Rd, Suite 100b,
Vacaville, CA 95687-4172

Ph: (707) 624-7999
Gregory Yervant Warner, DO
1010 Nut Tree Rd, Suite 100b,
Vacaville, CA 95687-4172

Ph: (707) 624-7999

Reviews and Comments


Internal Medicine Doctors in Vacaville, CA

Dr. Jason Rohrer, M.D.
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: Po Box 4000, Vacaville, CA 95696
Phone: 707-451-0182    
Liyan Zhang, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 1 Quality Dr, Vacaville, CA 95688
Phone: 707-453-5000    
Marissa C. Neis-gimenez, MD
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 1 Quality Dr, Vacaville, CA 95688
Phone: 707-453-5000    
David M Woodhouse, MD
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 770 Mason St, Vacaville, CA 95688
Phone: 707-454-5800    Fax: 707-454-5911
Richard M Tan, M.D.
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 2100 Peabody Rd., Vacaville, CA 95696
Phone: 707-451-0182    
Bethlehem Haile, M.D
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 1600 California Dr, Vacaville, CA 95687
Phone: 707-453-7007    Fax: 707-453-7009

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.