Dr Harelle Cassy Duncan, MD - Medicare Internal Medicine in Jacksonville, FL

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Dr Harelle Cassy Duncan, MD is a medicare enrolled "Internal Medicine" physician in Jacksonville, Florida. Her current practice location is 655 W 8th St, Jacksonville, Florida. You can reach out to her office (for appointments etc.) via phone at (904) 244-4963.

Dr Harelle Cassy Duncan is licensed to practice in Florida (license number ME105010) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1174718837.

Contact Information

Dr Harelle Cassy Duncan, MD
655 W 8th St,
Jacksonville, FL 32209-6511
(904) 244-4963
(904) 244-4799

Map and Direction




Physician's Profile

Full NameDr Harelle Cassy Duncan
GenderFemale
SpecialityInternal Medicine
Location655 W 8th St, Jacksonville, Florida
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1174718837
  • Provider Enumeration Date: 09/06/2007
  • Last Update Date: 05/27/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 2567509490
  • Enrollment ID: I20091027000270

Medical Identifiers

Medical identifiers for Dr Harelle Cassy Duncan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174718837NPI-NPPES
146J2OtherFLBC/BC
002023100MedicaidFL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine ME105010 (Florida)Primary
207R00000XInternal Medicine 062882 (Georgia)Secondary

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 Harelle Cassy Duncan allows following entities to bill medicare on her behalf.
Entity NameCogent Healthcare Of Jacksonville, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124252333
PECOS PAC ID: 1759435944
Enrollment ID: O20090824000043

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 Harelle Cassy Duncan 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 Harelle Cassy Duncan, MD
5410 Maryland Way, #300,
Brentwood, TN 37027-5064

Ph: (615) 377-5658		Dr Harelle Cassy Duncan, MD
655 W 8th St,
Jacksonville, FL 32209-6511

Ph: (904) 244-4963

Reviews and Comments


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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.

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.