John S Gilliam, MD - Medicare Family Practice in Mayer, AZ

John S Gilliam, MD is a medicare enrolled "Family Medicine" physician in Mayer, Arizona. He went to Oral Roberts University School Of Medicine and graduated in 1986 and has 38 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Carelock Llc, Carelock Llc and his current practice location is 20172 E Stagecoach Trl, Mayer, Arizona. You can reach out to his office (for appointments etc.) via phone at (800) 288-6206.

John S Gilliam is licensed to practice in Arizona (license number 41469) 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 1003877085.

Contact Information

John S Gilliam, MD
20172 E Stagecoach Trl,
Mayer, AZ 86333-2357
(800) 288-6206
(800) 960-4547

Map and Direction




Physician's Profile

Full NameJohn S Gilliam
GenderMale
SpecialityFamily Practice
Experience38 Years
Location20172 E Stagecoach Trl, Mayer, 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:
  • John S Gilliam attended and graduated from Oral Roberts University School Of Medicine in 1986
  NPI Data:
  • NPI Number: 1003877085
  • Provider Enumeration Date: 03/30/2006
  • Last Update Date: 07/01/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 7618989831
  • Enrollment ID: I20060706000299

Medical Identifiers

Medical identifiers for John S Gilliam such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003877085NPI-NPPES
100044450BMedicaidOK
600874OtherAZAHCCCS (ARIZONA MEDICAID) ID
Z144938OtherAZMEDICARE PTAN
100044450AMedicaidOK

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 16226 (Oklahoma)Secondary
207Q00000XFamily Medicine 41469 (Arizona)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Carelock Llc94364911726
Carelock Llc94364911726

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. John S Gilliam allows following entities to bill medicare on his behalf.
Entity NameCarelock Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245795459
PECOS PAC ID: 9436491172
Enrollment ID: O20190823000616

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. John S Gilliam 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
John S Gilliam, MD
15029 N Thompson Peak Parkway, Ste B-111 Pmb 438,
Scottsdale, AZ 85260-2223

Ph: (405) 590-8861
John S Gilliam, MD
20172 E Stagecoach Trl,
Mayer, AZ 86333-2357

Ph: (800) 288-6206

Reviews and Comments


Family Medicine Doctors in Mayer, AZ

Dr. Zachary Thomas Brown, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 20172 E Stagecoach Trl, Mayer, AZ 86333
Phone: 928-632-4399    
Leanna Drake, FNP-C
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 20172 E Stagecoach Trl, Mayer, AZ 86333
Phone: 928-632-4399    

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.