Dr John Thomas Gregg, M D - Medicare Emergency Medicine in Alva, OK

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Dr John Thomas Gregg, M D is a medicare enrolled "Surgery" physician in Alva, Oklahoma. He graduated from medical school in 1980 and has 44 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Concord Medical Group Of Texas Pllc, Concord Medical Group Pllc, Hcc Of Shattuck Llc, Hospital Care Consultants Inc, Newman Memorial Hospital, Inc, Concord Medical Group Of Texas Pllc and his current practice location is Share Medical Center, Alva, Oklahoma. You can reach out to his office (for appointments etc.) via phone at (806) 346-1468.

Dr John Thomas Gregg is licensed to practice in Oklahoma (license number 17854) 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 1184605917.

Contact Information

Dr John Thomas Gregg, M D
Share Medical Center,
Alva, OK 73717
(806) 346-1468
Not Available

Map and Direction




Physician's Profile

Full NameDr John Thomas Gregg
GenderMale
SpecialityEmergency Medicine
Experience44 Years
LocationShare Medical Center, Alva, Oklahoma
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 Thomas Gregg graduated from medical school in 1980
  NPI Data:
  • NPI Number: 1184605917
  • Provider Enumeration Date: 11/09/2005
  • Last Update Date: 08/31/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 1254352099
  • Enrollment ID: I20051229000730

Medical Identifiers

Medical identifiers for Dr John Thomas Gregg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184605917NPI-NPPES
613716OtherTXMEDICARE
100205210AMedicaidOK
096627702MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 17854 (Oklahoma)Secondary
207P00000XEmergency Medicine H5890 (Texas)Secondary
208600000XSurgery H5890 (Texas)Secondary
208600000XSurgery 17854 (Oklahoma)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Share Medical CenterAlva, OKHospital
Newman Memorial HospitalShattuck, OKHospital
Electra Memorial HospitalElectra, TXHospital

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 Thomas Gregg allows following entities to bill medicare on his behalf.
Entity NameChoctaw County City Of Hugo Hospital Authority
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881689289
PECOS PAC ID: 8022921519
Enrollment ID: O20031111000136
Entity NameNewman Memorial Hospital, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083617807
PECOS PAC ID: 2567482367
Enrollment ID: O20051122000749
Entity NameHospital Care Consultants Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912945635
PECOS PAC ID: 9032131735
Enrollment ID: O20051222000019
Entity NameConcord Medical Group Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083630610
PECOS PAC ID: 0446296818
Enrollment ID: O20140523001063
Entity NameNewman Memorial Hospital, Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1083617807
PECOS PAC ID: 2567482367
Enrollment ID: O20160811000217
Entity NameHcc Of Shattuck Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124661624
PECOS PAC ID: 8628401262
Enrollment ID: O20191212000181
Entity NameConcord Medical Group Of Texas Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750790762
PECOS PAC ID: 7810117223
Enrollment ID: O20210107000494

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 Thomas Gregg 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 Thomas Gregg, M D
8800 Tall Oaks Dr,
Guthrie, OK 73044-6139

Ph: (806) 346-1468		Dr John Thomas Gregg, M D
Share Medical Center,
Alva, OK 73717

Ph: (806) 346-1468

Reviews and Comments


Surgery Doctors in Alva, OK


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.