John Harold Giesler, MD - Medicare Radiation Oncology in Riverdale, GA

John Harold Giesler, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in Riverdale, Georgia. He went to Ohio Medical University and graduated in 1987 and has 37 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice Therapeutic Radiation Oncology, Pc and his current practice location is 255 Professional Ct, Riverdale, Georgia. You can reach out to his office (for appointments etc.) via phone at (770) 997-8424.

John Harold Giesler is licensed to practice in Georgia (license number 35882) 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 1649261926.

Contact Information

John Harold Giesler, MD
255 Professional Ct,
Riverdale, GA 30274-2531
(770) 997-8424
Not Available

Map and Direction




Physician's Profile

Full NameJohn Harold Giesler
GenderMale
SpecialityRadiation Oncology
Experience37 Years
Location255 Professional Ct, Riverdale, Georgia
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 Harold Giesler attended and graduated from Ohio Medical University in 1987
  NPI Data:
  • NPI Number: 1649261926
  • Provider Enumeration Date: 11/04/2005
  • Last Update Date: 07/15/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 1254223399
  • Enrollment ID: I20040325000749

Medical Identifiers

Medical identifiers for John Harold Giesler such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1649261926NPI-NPPES
920000946OtherGARAILROAD MEDICARE
300037175OtherGARAILROAD MEDICARE
2405450OtherGAUNITED HEALTHCARE
920000948OtherGARAILROAD MEDICARE
00582887CMedicaidGA
00582887BMedicaidGA
2403450OtherGAUNITED HEALTHCARE
450638OtherGABC/BS GA
00582887DMedicaidGA
45062OtherGABC/BS GA
450641OtherGABC/BS GA
480640OtherGABC/BS GA
920000950OtherGARAILROAD MEDICARE
2402350OtherGAUNITED HEALTHCARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology 35882 (Georgia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Piedmont Henry HospitalStockbridge, GAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Therapeutic Radiation Oncology, Pc21633258128

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 Harold Giesler allows following entities to bill medicare on his behalf.
Entity NameTherapeutic Radiation Oncology, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629019534
PECOS PAC ID: 2163325812
Enrollment ID: O20040129000841
Entity NameCtca Physicians Group Of Georgia, Llc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447520333
PECOS PAC ID: 4880841212
Enrollment ID: O20120820001117

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 Harold Giesler 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 Harold Giesler, MD
255 Professional Ct,
Riverdale, GA 30274-2531

Ph: (770) 337-8424
John Harold Giesler, MD
255 Professional Ct,
Riverdale, GA 30274-2531

Ph: (770) 997-8424

Reviews and Comments


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Phone: 770-991-8000    

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.