Dr. Harelle Cassy Duncan, MD
- Medicare services, 2016
- 233
- Part D claims, 2024
- 587
- Industry payments
- $383
- Affiliated sites
- 6
- Medical groups
- 5
- Practice address
- 4200 Nw 90th Blvd, Gainesville, FL 32606
- Practice phone
- Call (904) 378-2121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Haven Hospice - Gainesville
Hospice - Independent · Gainesville, Florida
Find Dr. Duncan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Harelle Cassy Duncan is an internist in Gainesville, Florida
Dr. Duncan practices at Haven Hospice - Gainesville in Gainesville, Florida.
Dr. Duncan's NPI, 1174718837, was assigned on September 6, 2007. Dr. Duncan graduated from Ross University School of Medicine in 2006. Dr. Duncan holds Florida license ME105010.
- NPI
- 1174718837NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567509490
- NPI enumeration date
- September 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (904) 378-2121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Harelle Cassy Duncan practices at Haven Hospice - Gainesville in Gainesville, Florida
Dr. Duncan's primary practice is Haven Hospice - Gainesville, at 4200 Nw 90th Blvd, Gainesville, FL 32606 in Alachua County. The practice phone is (904) 378-2121.
- Haven Hospice - Gainesville4200 Nw 90th Blvd, Gainesville, FL 32606 · Alachua CountyPhone(904) 378-2121
Source: Dmand AI Affiliation Data
Dr. Harelle Cassy Duncan is affiliated with 6 sites of care and 5 medical groups
Dr. Duncan's primary practice is Haven Hospice - Gainesville in Gainesville, Florida. The medical group on file is Central Florida Inpatient Medicine. Dmand AI also links Dr. Duncan to 4 more medical groups, 3 group practices and clinics and 2 skilled nursing facilities, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Harelle Cassy Duncan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duncan practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Haven Hospice - Gainesville | Available with a free account |
| +5 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Harelle Cassy Duncan is one of 9,009 internists in Florida
Internal medicine is Dr. Duncan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Duncan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Duncan's licenses on file in 2 states: Florida and Georgia.
Specialties and state licenses
- Internal medicine, FloridaPrimary
- Georgia license
Internists near Dr. Duncan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Harelle Cassy Duncan billed Medicare for 233 services in 2016
CMS data shows 233 Medicare services from Dr. Duncan across 4 procedure codes in 2016. Medicare paid $20,408 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Duncan compared with the Florida median for internists, 2016
- Dr. Duncan
- Florida median
- Medicare services
- 233vs 55558% below
- Part D claims
- 263vs 46644% below
Medians across 8,488 internists in Florida with Dmand AI profiles that report each measure.
Dr. Duncan's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duncan and other internists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Harelle Cassy Duncan's patients have a median age of 82
Across all payers, Dmand AI patient panel data puts Dr. Duncan's median patient age at 82, with 56% women.
Dr. Duncan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 82
Patient panel by sex, all payers
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Harelle Cassy Duncan wrote 587 Medicare Part D claims in 2024
In 2024, Dr. Duncan wrote 587 Medicare Part D claims for 195 patients. 88% of them were for generic drugs. CMS names the drug for 263 of them, across 17 drugs with 11 or more claims each, at $2,029 in total drug cost. In 2017, CMS named 101 claims across 7 drugs.
Dr. Duncan's Part D claims by kind of drug, 2024
- Generic514 claims88%
- Brand-name and other73 claims12%
Dr. Duncan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Duncan's Part D claims, 2024
- Antibiotics6%36 of 587 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2017 to 2024
- 2017
- 2024
- Claims for drugs CMS names
- 2017: 1012024: 263160%
Drugs named by CMS: 17 in 2024, 7 in 2017.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Harelle Cassy Duncan takes part in Medicare
Dr. Duncan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Harelle Cassy Duncan received $383 in industry payments from 2016 to 2019
CMS Open Payments shows 10 general payments to Dr. Duncan from 7 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 74% of the total. Mentor Worldwide LLC paid the most, $106.
General payments to Dr. Duncan by program year, 2016 to 2019
General payments to Dr. Duncan by kind, 2016 to 2019
- Food and beverage$28374%
- Consulting fees$10026%
Companies that paid Dr. Duncan the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Harelle Cassy Duncan graduated from Ross University School of Medicine
Dr. Duncan graduated from Ross University School of Medicine in 2006. Dr. Duncan is a member of SHM.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Harelle Cassy Duncan accepts plans from 7 insurance carriers
Dr. Duncan is in network with 7 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Excellus BlueCross BlueShield
- United Healthcare
- Cigna
- Blue Cross and Blue Shield of Kansas City
- Elevance
- HCSC
Plan types Dr. Duncan accepts, by number of carriers
- HMO5
- PPO5
- Medicare4
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Harelle Cassy Duncan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Harelle Cassy Duncan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Harelle Cassy Duncan's NPI number?
Dr. Harelle Cassy Duncan's NPI number is 1174718837. It was assigned on September 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Harelle Cassy Duncan?
Dr. Harelle Cassy Duncan is an internist in Gainesville, Florida. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Harelle Cassy Duncan practice?
Dr. Duncan practices at 4200 Nw 90th Blvd, Gainesville, FL 32606. Dr. Duncan's primary practice is Haven Hospice - Gainesville in Gainesville, Florida. Dmand AI also links Dr. Duncan to 4 medical groups, 3 group practices and clinics and 2 skilled nursing facilities.
What is Dr. Harelle Cassy Duncan's office phone number?
The practice phone on file for Dr. Duncan is (904) 378-2121.
What is Dr. Harelle Cassy Duncan's medical license number?
Dr. Duncan holds Florida license ME105010, one of the licenses on file in 2 states.
Which states has Dr. Harelle Cassy Duncan been licensed in?
Dmand AI has state licenses on file for Dr. Duncan in Florida (2009 to 2027) and Georgia (2009 to 2010).
What medical group is Dr. Harelle Cassy Duncan part of?
Dr. Duncan is linked to Central Florida Inpatient Medicine. Dmand AI links Dr. Duncan to 4 more medical groups.
Does Dr. Harelle Cassy Duncan accept Medicare?
Yes. CMS data shows Dr. Duncan billed Medicare for 233 services in 2016, and Dr. Duncan accepts Medicare assignment.
Is Dr. Harelle Cassy Duncan board certified?
Yes. Dr. Duncan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Harelle Cassy Duncan bill to Medicare?
In 2016, Dr. Duncan's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).
Show 5 more questionsShow fewer questions
Where did Dr. Harelle Cassy Duncan go to medical school?
Dr. Duncan graduated from Ross University School of Medicine in 2006.
What drugs does Dr. Harelle Cassy Duncan prescribe most?
In 2024 Medicare Part D data, Dr. Duncan's most prescribed drugs by claims were Amlodipine Besylate, Albuterol Sulfate Hfa and Atorvastatin Calcium.
Has Dr. Harelle Cassy Duncan received payments from drug or device companies?
CMS Open Payments shows $383 in general payments to Dr. Duncan from 7 companies from 2016 to 2019. The largest total came from Mentor Worldwide LLC.
How long has Dr. Harelle Cassy Duncan been practicing?
Dr. Duncan graduated from medical school in 2006, 20 years ago.
What insurance does Dr. Harelle Cassy Duncan accept?
Dr. Duncan is in network with 7 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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