Dr Gregory A Parker, MD - Medicare Internal Medicine in Oklahoma City, OK

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Dr Gregory A Parker, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Oklahoma City, Oklahoma. His current practice location is 3525 Nw 56th St, Suite D100, Oklahoma City, Oklahoma. You can reach out to his office (for appointments etc.) via phone at (405) 942-9200.

Dr Gregory A Parker is licensed to practice in Oklahoma (license number 14781) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1972544625.

Contact Information

Dr Gregory A Parker, MD
3525 Nw 56th St, Suite D100,
Oklahoma City, OK 73112-4550
(405) 942-9200
(405) 949-1483

Map and Direction




Physician's Profile

Full NameDr Gregory A Parker
GenderMale
SpecialityInternal Medicine - Hematology & Oncology
Location3525 Nw 56th St, Oklahoma City, Oklahoma
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1972544625
  • Provider Enumeration Date: 06/10/2006
  • Last Update Date: 05/12/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 2567366313
  • Enrollment ID: I20031122000102

Medical Identifiers

Medical identifiers for Dr Gregory A Parker such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972544625NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 14781 (Oklahoma)Primary

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 Gregory A Parker allows following entities to bill medicare on his behalf.
Entity NameComprehensive Cancer Center Of Oklahoma Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831272889
PECOS PAC ID: 3476457227
Enrollment ID: O20031122000083
Entity NameSsm Health Care Of Oklahoma, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033283932
PECOS PAC ID: 6709771207
Enrollment ID: O20040216000184
Entity NameSaints Medical Group, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437195922
PECOS PAC ID: 7012914898
Enrollment ID: O20061109000189

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 Gregory A Parker 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 Gregory A Parker, MD
3525 Nw 56th St, Suite D100,
Oklahoma City, OK 73112-4550

Ph: (405) 942-9200		Dr Gregory A Parker, MD
3525 Nw 56th St, Suite D100,
Oklahoma City, OK 73112-4550

Ph: (405) 942-9200

Reviews and Comments


Internal Medicine Doctors in Oklahoma City, OK

Evelyn Lorents, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 920 Sl Young Blvd, Oklahoma City, OK 73104
Phone: 405-271-5963    
Patrick Bronson Reeves, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3366 Nw Expressway Ste 550, Oklahoma City, OK 73112
Phone: 405-942-5442    Fax: 405-942-6448
Dr. Jake Lee Evans, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 800 Stanton L Young Blvd, Aat 6300, Oklahoma City, OK 73104
Phone: 405-271-5963    
Dr. Shawn Patel, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 1200 Childrens Ave Ste 14000, Oklahoma City, OK 73104
Phone: 405-271-5211    
Metri Haddaden, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 800 Stanton L Young Blvd # 8425, Oklahoma City, OK 73104
Phone: 405-271-6173    Fax: 410-554-2184
Divya Sharma Divyadarshini, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 800 Stanton L Young Blvd, Oklahoma City, OK 73104
Phone: 405-271-5963    
Dr. Philip Barton Miner, Jr., M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 1000 N Lincoln Blvd, Suite 210, Oklahoma City, OK 73104
Phone: 405-271-4644    Fax: 405-271-3296

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).

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