Dr John Dawson Mason, MD - Medicare Emergency Medicine in Tempe, AZ

  1. Home
  2. Emergency Medicine
  3. AZ
  4. Tempe
Dr John Dawson Mason, MD is a medicare enrolled "Emergency Medicine" physician in Tempe, Arizona. He graduated from medical school in 2000 and has 26 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Usacs Emergency Medicine Of Arizona Llc, East Valley Ep Pllc, Tec Emergency Physicians Of Arizona, Llc and his current practice location is 1500 S Mill Ave, Tempe, Arizona. You can reach out to his office (for appointments etc.) via phone at (480) 784-5533.

Dr John Dawson Mason is licensed to practice in Arizona (license number 31338) 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 1023090099.

Contact Information

Dr John Dawson Mason, MD
1500 S Mill Ave,
Tempe, AZ 85281-6699
(480) 784-5533
Not Available

Map and Direction




Physician's Profile

Full NameDr John Dawson Mason
GenderMale
SpecialityEmergency Medicine
Experience26 Years
Location1500 S Mill Ave, Tempe, Arizona
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 John Dawson Mason graduated from medical school in 2000
  NPI Data:
  • NPI Number: 1023090099
  • Provider Enumeration Date: 11/16/2005
  • Last Update Date: 04/18/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 8426944083
  • Enrollment ID: I20040223000552

Medical Identifiers

Medical identifiers for Dr John Dawson Mason such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023090099NPI-NPPES
860373636OtherAZHUMANA GROUP
AZ0728670OtherAZBLUECROSS BLUESHIELD GRP
775471MedicaidAZ
AW1436OtherAZHEALTHNET GRP
453051001OtherAZGROUPHEALTH GRP
3981220OtherAZEVERCARE GRP

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 31338 (Arizona)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Honorhealth Tempe Medical CenterTempe, AZHospital
East Valley Er & HospitalGilbert, AZHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Usacs Emergency Medicine Of Arizona Llc711344747536
East Valley Ep Pllc488008178515
Tec Emergency Physicians Of Arizona, Llc6204256084155

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 John Dawson Mason allows following entities to bill medicare on his behalf.
Entity NameEmergency Group of Arizona Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215275433
PECOS PAC ID: 1355596644
Enrollment ID: O20130313000442
Entity NameTec Emergency Physicians of Arizona, LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245772870
PECOS PAC ID: 6204256084
Enrollment ID: O20201016000157
Entity NameExceptional Physician Group Arizona, PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447910229
PECOS PAC ID: 0042605008
Enrollment ID: O20220310000502
Entity NameEast Valley Ep PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659039618
PECOS PAC ID: 4880081785
Enrollment ID: O20220423000106
Entity NameExceptional Physicians Group Yuma Hospital PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235857699
PECOS PAC ID: 3173983186
Enrollment ID: O20230721000455
Entity NameExceptional Physicians Group Bullhead City Hospital PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518732023
PECOS PAC ID: 9335599604
Enrollment ID: O20231228002414
Entity NamePhoenix Physician Group PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154898435
PECOS PAC ID: 9830556463
Enrollment ID: O20240226001151
Entity NameUsacs of Colorado Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235765074
PECOS PAC ID: 4981507571
Enrollment ID: O20250116003493
Entity NameUsacs Emergency Medicine of Arizona LLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770392490
PECOS PAC ID: 7113447475
Enrollment ID: O20250218000978
Entity NameExceptional Physicians Group Prescott Hospital PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720807670
PECOS PAC ID: 0446775373
Enrollment ID: O20250423001192

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 John Dawson Mason 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 John Dawson Mason, MD
4619 E Calle Tuberia,
Phoenix, AZ 85018-2910

Ph: (480) 206-4086		Dr John Dawson Mason, MD
1500 S Mill Ave,
Tempe, AZ 85281-6699

Ph: (480) 784-5533

Reviews and Comments


Emergency Medicine Doctors in Tempe, AZ

Dr. Jeffrey W Gaver, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 451 E University Dr, Tempe, AZ 85281
Phone: 480-965-3346    Fax: 480-965-6531
Druce Fu, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8015 S Michele Ln, Tempe, AZ 85284
Phone: 480-773-7756    
Stefan K. Flores, M.D
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5125 S Rural Rd, Tempe, AZ 85282
Phone: 480-306-8780    
Dr. Thuan Nguyen, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1500 S Mill Ave, Emergency Department, Tempe, AZ 85281
Phone: 480-784-5533    Fax: 480-333-5197
Perry Olliver, DO
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 850 S River Dr Unit 1096, Tempe, AZ 85281
Phone: 480-390-9367    
Stefanie R Schroeder, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 451 E University Dr, Tempe, AZ 85281
Phone: 480-965-3346    Fax: 480-965-8914
Lisa L Dewinter, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1500 S Mill Ave, Tempe, AZ 85281
Phone: 517-304-0652    

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.