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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: August 7, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 7, 2026, Mar 9, 2026, Mar 6, 2026 (3 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 UpdateAugust 7, 20263 updates tracked since enumeration
NPPES CertifiedAugust 7, 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, billing reassignment, and ordering and referring status from CMS.

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.

Medicare Billing Reassignments

5

Medicare enrollment records show Harelle Duncan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Patient Focus Physicians Associates Inc
8.6 mi
Multi-Specialty
101 CENTURY 21 DR
Jacksonville, FL 32216
  • Reassigned Medicare billing, Florida enrollment
  • 9 clinicians in this Medicare group
NPI 1801407291 (904) 821-7372
Cogent Healthcare Of Jacksonville, LLC
12 mi
Internal Medicine
655 W 8TH ST
Jacksonville, FL 32209
  • Reassigned Medicare billing, Florida enrollment
  • 440 clinicians in this Medicare group
NPI 1124252333 (904) 244-3850
Haven Medical Group, LLC
62 mi
Hospice and Palliative Medicine
4200 NW 90TH BLVD
Gainesville, FL 32606
  • Reassigned Medicare billing, Florida enrollment
  • 42 clinicians in this Medicare group
NPI 1407143316 (352) 378-2121
Central Florida Inpatient Medicine LLC
101 mi
Internal Medicine
525 TECHNOLOGY PARK STE 109
Lake Mary, FL 32746
  • Reassigned Medicare billing, Florida enrollment
  • 329 clinicians in this Medicare group
NPI 1649228859 (407) 647-2346
Progress Medical Center
285 mi
Adult Medicine
1800 N FEDERAL HWY STE 207
Pompano Beach, FL 33062
  • Reassigned Medicare billing, Florida enrollment
  • 3 clinicians in this Medicare group
NPI 1285366427 (954) 606-5050

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 3

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
HCM WELLNESS LLC
Internal Medicine
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.

Which organizations bill Medicare for Harelle Duncan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harelle Duncan reassigns Medicare benefits to 5 organizations: Patient Focus Physicians Associates Inc (Jacksonville, FL), Cogent Healthcare Of Jacksonville, LLC (Jacksonville, FL), Haven Medical Group, LLC (Gainesville, FL), Central Florida Inpatient Medicine LLC (Lake Mary, FL) and Progress Medical Center (Pompano Beach, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Harelle Duncan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Harelle Duncan was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.