Walter James Gray, MD - Medicare Internal Medicine in Indianapolis, IN

Walter James Gray, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Indianapolis, Indiana. His current practice location is 1701 Senate Blvd, Indianapolis, Indiana. You can reach out to his office (for appointments etc.) via phone at (317) 962-5820.

Walter James Gray is licensed to practice in West Virginia (license number 31668) 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 1821040353.

Contact Information

Walter James Gray, MD
1701 Senate Blvd,
Indianapolis, IN 46202-1239
(317) 962-5820
(317) 962-0500

Map and Direction




Physician's Profile

Full NameWalter James Gray
GenderMale
SpecialityInternal Medicine - Critical Care Medicine
Location1701 Senate Blvd, Indianapolis, Indiana
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1821040353
  • Provider Enumeration Date: 05/16/2006
  • Last Update Date: 09/27/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0749274413
  • Enrollment ID: I20040414000645

Medical Identifiers

Medical identifiers for Walter James Gray such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1821040353NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine ME43081 (Florida)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 01088744A (Indiana)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 2014-02018 (North Carolina)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 31668 (West Virginia)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. Walter James Gray allows following entities to bill medicare on his behalf.
Entity NameHalifax Healthcare Systems Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245283530
PECOS PAC ID: 1254238090
Enrollment ID: O20031218000443
Entity NameCogent Healthcare Of Jacksonville, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124252333
PECOS PAC ID: 1759435944
Enrollment ID: O20090824000043
Entity NameLandmark Hospital Of Southwest Florida, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932595659
PECOS PAC ID: 3072827880
Enrollment ID: O20160624000695

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. Walter James Gray 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
Walter James Gray, MD
250 N Shadeland Ave,
Indianapolis, IN 46219-4959

Ph: () -
Walter James Gray, MD
1701 Senate Blvd,
Indianapolis, IN 46202-1239

Ph: (317) 962-5820

Reviews and Comments


Internal Medicine Doctors in Indianapolis, IN

Irene A Carrothers, M.D.
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1701 Senate Blvd, Indianapolis, IN 46202
Phone: 317-963-8776    Fax: 317-963-5285
Liam P Howley, MD
Critical Care Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1001 West 10th St Opw-m200, Indiana University Department Of Medicine, Indianapolis, IN 46202
Phone: 317-630-6560    
Cristina Nancy Perez Chumbiauca, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 550 University Blvd, Indianapolis, IN 46202
Phone: 317-944-5000    
Dr. Andrew Jonathen Ortega, DO
Critical Care Medicine
Medicare: Medicare Enrolled
Practice Location: 702 Rotary Cir, Indianapolis, IN 46202
Phone: 317-278-4427    
Lawrence John Born, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 8424 Naab Rd, #3-j, Indianapolis, IN 46260
Phone: 317-872-7396    Fax: 317-879-8328
Brian T Robinson, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1001 W 10th St, Indianapolis, IN 46202
Phone: 317-630-7979    Fax: 317-630-2668
Steven T Hugenberg, M.D.
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 550 University Blvd, Indianapolis, IN 46202
Phone: 317-944-8660    

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.