Dr Allen J Hamaker, MD - Medicare Internal Medicine in Okc, OK

Dr Allen J Hamaker, MD is a medicare enrolled "Internal Medicine" physician in Okc, Oklahoma. He went to Wayne State University School Of Medicine and graduated in 1990 and has 34 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 3613 Nw 56th St., Suite 140, Okc, Oklahoma. You can reach out to his office (for appointments etc.) via phone at (405) 949-6481.

Dr Allen J Hamaker is licensed to practice in Oklahoma (license number 20735) 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 1326028663.

Contact Information

Dr Allen J Hamaker, MD
3613 Nw 56th St., Suite 140,
Okc, OK 73112
(405) 949-6481
(405) 795-5908

Map and Direction




Physician's Profile

Full NameDr Allen J Hamaker
GenderMale
SpecialityInternal Medicine
Experience34 Years
Location3613 Nw 56th St., Okc, 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 Allen J Hamaker attended and graduated from Wayne State University School Of Medicine in 1990
  NPI Data:
  • NPI Number: 1326028663
  • Provider Enumeration Date: 01/20/2006
  • Last Update Date: 10/14/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 7416990148
  • Enrollment ID: I20050603000727

Medical Identifiers

Medical identifiers for Dr Allen J Hamaker such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1326028663NPI-NPPES
100060090AMedicaidOK

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 20735 (Oklahoma)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Integris Baptist Medical Center, IncOklahoma city, OKHospital
Onecore HealthOklahoma city, OKHospital

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 Allen J Hamaker allows following entities to bill medicare on his behalf.
Entity NameAllen J Hamaker, Md Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720158397
PECOS PAC ID: 2163458571
Enrollment ID: O20050715000917

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 Allen J Hamaker 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 Allen J Hamaker, MD
3613 Nw 56th St., Suite 140,
Okc, OK 73112

Ph: (405) 949-6481
Dr Allen J Hamaker, MD
3613 Nw 56th St., Suite 140,
Okc, OK 73112

Ph: (405) 949-6481

Reviews and Comments


Internal Medicine Doctors in Okc, OK

Maria Tariq Siddiqui,
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Dr. Dennis Matthew Parker, MD
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Practice Location: 3366 Nw Expressway, #660, Okc, OK 73112
Phone: 405-947-3345    Fax: 405-949-0849
Dr. Nancy Nesbitt Nagle, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3366 Nw Expressway, #660, Okc, OK 73112
Phone: 405-947-3345    Fax: 405-946-6677

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.