Harelle Cassy Duncan, M.D.
Internal Medicine Physician · Jacksonville, FL
Harelle Cassy Duncan, M.D. is an internal medicine physician with a practice address in Jacksonville, Florida, and NPI 1174718837, issued on Sep 6, 2007. Check the license (Florida ME105010, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Harelle Cassy Duncan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- ME105010 FL
062882 GA
Self-reported in NPPES; status is on the state search - Practice location
- 10365 Hood RD S Ste 204, Jacksonville, FL 32257
- Phone
- (904) 326-0181
- Enumerated
- Sep 6, 2007
- Record last updated
- Aug 7, 2026
- Fax
- (855) 538-2401
- Medicaid ID
- 002023100 FL
- Medicare enrollment
- Enrolled (PECOS I20091027000270); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Also registered at 10365 Hood RD S Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darnelle Mondesir, DNP, MHSL, FNP-CNurse Practitioner1013576396
Verify Harelle Cassy Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME105010Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average internal medicine physician in 2024
587 Medicare Part D claims for 195 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate24 claims
- Albuterol Sulfate Hfa20 claims
- Atorvastatin Calcium20 claims
- Pantoprazole Sodium19 claims
- Gabapentin18 claims
- Cyclobenzaprine Hcl17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Central Florida Inpatient Medicine LLCLake Mary, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harelle Cassy Duncan among 10,151 internal medicine physician records in Florida
Harelle Cassy Duncan, M.D. is one of 10,151 internal medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 48% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2006 · median 2004 among the 6,606 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
546 internal medicine physician records list a practice address in Jacksonville
They are 546 of the 24,194 NPPES records with a practice address in Jacksonville, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Jacksonville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Anez, MDJacksonville, FL 322571437899226
- Latasha Hayes, MDJacksonville, FL 322571073967220
- Stefanie Lord, MDJacksonville, FL 322571710032032
- Prita Madkaiker, MDJacksonville, FL 322571508832361
- Elizabeth McCullough, M.D.Jacksonville, FL 322571508060898
- Ananthy Nallapillai, M.D.Jacksonville, FL 322571023198009
- Chitra Rajpal, M.B.B.S.,M.D.Jacksonville, FL 322571376723205
- Ruth Streeter, MDJacksonville, FL 322571538126230
Common questions
What is Harelle Cassy Duncan, M.D.'s NPI number?
Harelle Cassy Duncan, M.D.'s National Provider Identifier (NPI) is 1174718837, issued on Sep 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Harelle Cassy Duncan, M.D. located?
The NPPES record lists a practice address at 10365 Hood RD S Ste 204, Jacksonville, FL, 32257. Phone: (904) 326-0181. Providers update this record themselves, so call before visiting.
How can I verify Harelle Cassy Duncan, M.D.'s license?
NPPES lists Florida license number ME105010, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Harelle Cassy Duncan, M.D. prescribe under Medicare Part D?
In 2024, Harelle Cassy Duncan, M.D. had 587 Medicare Part D claims for 195 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.