Marissa Just, MD - Medicare Hematology/oncology in Indianapolis, IN

Marissa Just, MD is a medicare enrolled "Pediatrics - Pediatric Hematology-oncology" physician in Indianapolis, Indiana. She graduated from medical school in 2014 and has 12 years of diverse experience with area of expertise as Hematology/oncology. She is a member of the group practice Iu Health Medical Group Riley Specialists Llc and her current practice location is 705 Riley Hospital Dr, Indianapolis, Indiana. You can reach out to her office (for appointments etc.) via phone at (317) 944-2143.

Marissa Just is licensed to practice in Indiana (license number 01086329A) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1912325028.

Contact Information

Marissa Just, MD
705 Riley Hospital Dr,
Indianapolis, IN 46202-5109
(317) 944-2143
(317) 944-3107

Map and Direction




Physician's Profile

Full NameMarissa Just
GenderFemale
SpecialityHematology/oncology
Experience12 Years
Location705 Riley Hospital Dr, Indianapolis, Indiana
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Marissa Just graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1912325028
  • Provider Enumeration Date: 04/04/2014
  • Last Update Date: 02/14/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 0648674531
  • Enrollment ID: I20210816000733

Medical Identifiers

Medical identifiers for Marissa Just such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1912325028NPI-NPPES
300052899MedicaidIN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics 2017-00863 (North Carolina)Secondary
2080P0207XPediatrics - Pediatric Hematology-oncology 01086329A (Indiana)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Iu Health Medical Group Riley Specialists Llc9638669815285

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. Marissa Just allows following entities to bill medicare on her behalf.
Entity NameBeacon Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033161617
PECOS PAC ID: 1254243306
Enrollment ID: O20031105000657
Entity NameUniversity Pediatric Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457396541
PECOS PAC ID: 2163326794
Enrollment ID: O20031125000021

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. Marissa Just 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
Marissa Just, MD
Po Box 719094,
Chicago, IL 60677-9318

Ph: (317) 777-6435
Marissa Just, MD
705 Riley Hospital Dr,
Indianapolis, IN 46202-5109

Ph: (317) 944-2143

Reviews and Comments


Pediatrics Doctors in Indianapolis, IN

Mohannad Moallem, M.D.
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 705 Riley Hospital Dr, Indianapolis, IN 46202
Phone: 317-274-4779    Fax: 317-948-9806
Tracey Wilkinson, MD
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 705 Riley Hospital Dr Ste 1300, Indianapolis, IN 46202
Phone: 317-962-8067    
Joshua Wayne Gollub,
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 705 Riley Hospital Dr, Indianapolis, IN 46202
Phone: 317-274-4779    Fax: 317-948-9806
Katherine Carlsen Anderson, MD
Pediatrics
Medicare: Accepting Medicare Assignments
Practice Location: 1701 N Senate Blvd # Ag012, Indianapolis, IN 46202
Phone: 317-962-3525    
Ivana Radovanovic, MD
Pediatrics
Medicare: May Accept Medicare Assignments
Practice Location: 5550 S East St Ste C, Indianapolis, IN 46227
Phone: 317-534-4660    Fax: 317-782-4301
Samuel J Flanders, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 250 N Shadeland Ave, Ste 200, Indianapolis, IN 46219
Phone: 317-962-4836    Fax: 317-962-8646
Mark H Hoyer, MD
Pediatrics
Medicare: Accepting Medicare Assignments
Practice Location: 1701 N Senate Blvd, Indianapolis, IN 46202
Phone: 317-678-3900    

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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