Dr John Daniel Grigas, MD - Medicare Internal Medicine in Jacksonville, FL

Dr John Daniel Grigas, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Jacksonville, Florida. His current practice location is 800 Prudential Dr, 4th Floor Main North, Jacksonville, Florida. You can reach out to his office (for appointments etc.) via phone at (904) 202-2963.

Dr John Daniel Grigas is licensed to practice in Florida (license number ME0034374) 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 1457339772.

Contact Information

Dr John Daniel Grigas, MD
800 Prudential Dr, 4th Floor Main North,
Jacksonville, FL 32207-8202
(904) 202-2963
(904) 202-4225

Map and Direction




Physician's Profile

Full NameDr John Daniel Grigas
GenderMale
SpecialityInternal Medicine - Pulmonary Disease
Location800 Prudential Dr, Jacksonville, Florida
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1457339772
  • Provider Enumeration Date: 01/06/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 3870692874
  • Enrollment ID: I20100112000770

Medical Identifiers

Medical identifiers for Dr John Daniel Grigas such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1457339772NPI-NPPES
56099OtherFLBCBS OF FLORIDA
4213732OtherFLAETNA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RP1001XInternal Medicine - Pulmonary Disease ME0034374 (Florida)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 John Daniel Grigas allows following entities to bill medicare on his behalf.
Entity NameRespiratory Critical Care And Sleep Medicine Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1386622629
PECOS PAC ID: 3971602970
Enrollment ID: O20070615000138

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 John Daniel Grigas 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 John Daniel Grigas, MD
800 Prudential Dr, 4th Floor Main North,
Jacksonville, FL 32207-8202

Ph: (904) 202-2963
Dr John Daniel Grigas, MD
800 Prudential Dr, 4th Floor Main North,
Jacksonville, FL 32207-8202

Ph: (904) 202-2963

Reviews and Comments


Internal Medicine Doctors in Jacksonville, FL

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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.

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