May Tun, MD - Medicare Emergency Medicine in Fairfield, CA

May Tun, MD is a medicare enrolled "Emergency Medicine" physician in Fairfield, California. She went to University Of Wisconsin School Of Medicine and graduated in 2015 and has 9 years of diverse experience with area of expertise as Emergency Medicine. She is a member of the group practice Northbay Healthcare Group and her current practice location is 4500 Business Center Dr, Fairfield, California. You can reach out to her office (for appointments etc.) via phone at (707) 646-5000.

May Tun is licensed to practice in California (license number A154392) 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 1851787717.

Contact Information

May Tun, MD
4500 Business Center Dr,
Fairfield, CA 94534-6888
(707) 646-5000
Not Available

Map and Direction




Physician's Profile

Full NameMay Tun
GenderFemale
SpecialityEmergency Medicine
Experience9 Years
Location4500 Business Center Dr, Fairfield, 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:
  • May Tun attended and graduated from University Of Wisconsin School Of Medicine in 2015
  NPI Data:
  • NPI Number: 1851787717
  • Provider Enumeration Date: 04/07/2015
  • Last Update Date: 12/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8325340607
  • Enrollment ID: I20180816000264

Medical Identifiers

Medical identifiers for May Tun such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1851787717NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A154392 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northbay Medical CenterFairfield, 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. May Tun allows following entities to bill medicare on her behalf.
Entity NameNorthbay Healthcare Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821147786
PECOS PAC ID: 0042122244
Enrollment ID: O20031105000409
Entity NameSolano Gateway Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952344293
PECOS PAC ID: 5496725418
Enrollment ID: O20040916001355

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. May Tun 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
May Tun, MD
4500 Business Center Dr,
Fairfield, CA 94534-6888

Ph: () -
May Tun, MD
4500 Business Center Dr,
Fairfield, CA 94534-6888

Ph: (707) 646-5000

Reviews and Comments


Emergency Medicine Doctors in Fairfield, CA

Seth Abraham Kaufman, M.D.
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Medicare: Accepting Medicare Assignments
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Phone: 707-429-7830    
Julie Ann Hersk, M.D.
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Phone: 707-429-3600    
Wendell H. Perry, D.O.
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Deepa Japra, MD
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Practice Location: 1200 B Gale Wilson Blvd, Fairfield, CA 94533
Phone: 707-646-5000    
Dr. Steven Garcia, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 1200 B Gale Wilson Blvd, Fairfield, CA 94533
Phone: 707-646-5000    
David Alan Ehrenfeld, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1101 B Gale Wilson Blvd, Ste 203, Fairfield, CA 94533
Phone: 707-429-7701    
Dr. Russell Austin Gray, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 101 Bodin Cir, Fairfield, CA 94535
Phone: 707-423-3000    

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.