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DR. HARELLE CASSY DUNCAN M.D.
NPI 1174718837
Internal Medicine in Jacksonville, FL

Active since September 06, 2007PECOS EnrolledAccepts Medicare Assignment
10365 HOOD RD S STE 204, JACKSONVILLE, FL 32257(904) 326-0181(855) 538-2401 Get Directions Write a Review

NPPES record last updated: March 9, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 9, 2026, Mar 6, 2026 (2 updates tracked since 2026).

About Dr. Harelle Cassy Duncan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. HARELLE CASSY DUNCAN M.D. (NPI 1174718837) is an individual internal medicine provider in Jacksonville, Florida, licensed in Florida (ME105010) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1174718837
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. HARELLE CASSY DUNCANCredential: M.D.
Location Address10365 HOOD RD S STE 204Jacksonville, FL 32257-3261
Mailing Address10365 Hood Rd S Ste 204Jacksonville, FL 32257-3261 · (904) 326-0181 · Fax (855) 538-2401
Phone(904) 326-0181
Fax(855) 538-2401
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateSeptember 6, 2007
Last NPPES UpdateMarch 9, 20262 updates tracked since enumeration
NPPES CertifiedMarch 9, 2026
✔ NPI 1174718837 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in FL · ME105010✔ Licensed in GA · 062882
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
10365 HOOD RD S STE 204, Jacksonville, FL 32257
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Other Names 1

Former Name (1)Dr. Harelle Cassy Menard M.d.

Other Identifiers 2

Other146J2FL · Bc/bc
Medicaid002023100FL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Harelle Cassy Duncan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2567509490
PECOS Enrollment IDI20091027000270
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32257 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.04 typical visit price
range $56.00 – $171.84
Typical copayment $32.51 (range $14.00 – $42.96)
Most-billed visit code 99204
Established Patient
$99.16 typical visit price
range $17.57 – $139.16
Typical copayment $24.79 (range $4.39 – $34.79)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DARNELLE MONDESIR DNP, MHSL, FNP-C
Nurse Practitioner
10365 HOOD RD S STE 204
JACKSONVILLE, FL 32257
Duval County (904) 326-0181
MINDFUL MEDICINE COUNSELING CENTER LLC
Pediatrics
10365 HOOD RD S STE 204
JACKSONVILLE, FL 32257
Duval County (217) 480-7298

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Harelle Duncan's NPI number?

The NPI number for Harelle Duncan is 1174718837. It was assigned to this individual provider in the NPPES registry on September 6, 2007. The provider is also known as Dr. Harelle Cassy Menard M.D..

Where is Harelle Duncan located?

Harelle Duncan practices at 10365 Hood Rd S Ste 204, Jacksonville, FL 32257. The listed phone number is (904) 326-0181.

What is Harelle Duncan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Harelle Duncan enrolled in Medicare?

Yes. Harelle Duncan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Harelle Duncan was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.