Clin Infect Dis
Abdominal AbscessActinomycesActinomycosis
Dr. Hernan Robert Chang, MD
NPI1891720629
- Medicare services, 2021
- 979
- Part D claims, 2021
- 44
- Publications
- 4
- Hospital affiliations
- 1
- Industry payments
- $252
- Practice address
- 3625 University Blvd S, Jacksonville, FL 32216
- Practice phone
- Call (904) 702-6111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Hernan Robert Chang is an infectious disease specialist in Jacksonville, Florida
Dr. Chang practices at HCA Florida Memorial Hospital in Jacksonville, Florida, part of HCA Healthcare.
Dr. Chang's NPI, 1891720629, was assigned on July 11, 2006. Dr. Chang holds Florida license ME88878.
NPI and contact details
- NPI
- 1891720629NPI Registry (opens in a new tab)
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Practice phone
- (904) 702-6111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Hernan Robert Chang practices at HCA Florida Memorial Hospital in Jacksonville, Florida
Dr. Chang's primary practice is HCA Florida Memorial Hospital, at 3625 University Blvd S, Jacksonville, FL 32216 in Duval County. The practice phone is (904) 702-6111.
- HCA Florida Memorial Hospital3625 University Blvd S, Jacksonville, FL 32216 · Duval CountyPhone(904) 702-6111
Source: Dmand AI Affiliation Data
Dr. Hernan Robert Chang is affiliated with 2 sites of care and 1 medical group
Dr. Chang's primary practice is HCA Florida Memorial Hospital in Jacksonville, Florida, part of HCA Healthcare. Dmand AI also links Dr. Chang to 1 group practice or clinic and 1 medical group, 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. Hernan Robert Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HCA Florida Memorial Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hernan Robert Chang is one of 692 infectious disease specialists in Florida
Infectious disease is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Chang is licensed in Florida.
Specialties and state licenses
- Infectious disease, FloridaPrimary
Clinical focus
Dmand AI lists bile duct problems among the conditions Dr. Chang treats.
Infectious disease specialists near Dr. Chang
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
692infectious disease specialists in Florida40infectious disease specialists in Jacksonville2infectious disease specialists at HCA Florida Memorial Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Hernan Robert Chang billed Medicare for 979 services in 2021
CMS data shows 979 Medicare services from Dr. Chang across 4 procedure codes in 2021. Medicare paid $89,252 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2021979
Paid by Medicare$89,252
Procedure codes4
Dr. Chang's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1,5172021: 97935%
Dr. Chang compared with the Florida median for infectious disease specialists, 2021
- Dr. Chang
- Florida median
- Medicare services
- 979vs 9058% above
- Part D claims
- 44vs 24482% below
Medians across 664 infectious disease specialists in Florida with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2021
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. Chang and other infectious disease specialists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hernan Robert Chang's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 55, with 8% women.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women8%
- Men92%
Source: Dmand AI Patient Panel Data
Dr. Hernan Robert Chang wrote 44 Medicare Part D claims in 2021
In 2021, Dr. Chang wrote 44 Medicare Part D claims. They cover 3 drugs, with $62,453 in total drug cost. In 2020, CMS named 134 claims across 7 drugs.
Part D claims, 202144
Drugs named by CMS3
Total drug cost$62,453
Dr. Chang's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1342021: 4467%
Drugs named by CMS: 3 in 2021, 7 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Hernan Robert Chang has 4 publications on record
Dmand AI links 4 papers to Dr. Chang, published from 2004 to 2006. The most frequent topics are HIV Infections and Antiretroviral Therapy, Highly Active. Dr. Chang has published most often in Clin Infect Dis. Dr. Chang's most frequent co-author is Paul R. Skolnik, MD.
Papers4
Years published2004 to 2006
Topics Dr. Chang writes about most
- HIV Infections
- Antiretroviral Therapy, Highly Active
Dr. Chang's most frequent co-authors
Recent publications by Dr. Chang
Highly active antiretroviral therapy and viral response in HIV type 2 infection (opens in a new tab)
Clin Infect Dis
Antiretroviral Therapy, Highly ActiveCD4 Lymphocyte CountHIV-2
N Engl J Med
Antiretroviral Therapy, Highly ActiveAtazanavir SulfateHIV-1
CachexiaCytokinesEndocrine Glands
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hernan Robert Chang received $252 in industry payments from 2016 to 2025
CMS Open Payments shows 5 general payments to Dr. Chang from 4 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $99.
General payments to Dr. Chang by program year, 2016 to 2025
Companies that paid Dr. Chang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hernan Robert Chang accepts plans from 2 insurance carriers
Dr. Chang is in network with 2 carriers, including Excellus BlueCross BlueShield and GA State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- GA State Medicaid
Plan types Dr. Chang accepts, by number of carriers
- EPO1
- HMO1
- Medicaid1
- Medicare1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Hernan Robert Chang'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Hernan Robert Chang
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. Hernan Robert Chang's NPI number?
Dr. Hernan Robert Chang's NPI number is 1891720629. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hernan Robert Chang?
Dr. Hernan Robert Chang is an infectious disease specialist in Jacksonville, Florida. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Hernan Robert Chang practice?
Dr. Chang practices at 3625 University Blvd S, Jacksonville, FL 32216. Dr. Chang's primary practice is HCA Florida Memorial Hospital in Jacksonville, Florida, part of HCA Healthcare. Dmand AI also links Dr. Chang to 1 group practice or clinic and 1 medical group.
What is Dr. Hernan Robert Chang's office phone number?
The practice phone on file for Dr. Chang is (904) 702-6111.
What is Dr. Hernan Robert Chang's medical license number?
Dr. Chang holds Florida license ME88878.
Which hospitals is Dr. Hernan Robert Chang affiliated with?
Dr. Chang practices at HCA Florida Memorial Hospital in Jacksonville, Florida.
Does Dr. Hernan Robert Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 979 services in 2021.
What services does Dr. Hernan Robert Chang bill to Medicare?
In 2021, Dr. Chang's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and hospital inpatient care (99239).
What drugs does Dr. Hernan Robert Chang prescribe most?
In 2021 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Biktarvy, Levothyroxine Sodium and Lactulose.
Has Dr. Hernan Robert Chang received payments from drug or device companies?
CMS Open Payments shows $252 in general payments to Dr. Chang from 4 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
Show 4 more questionsShow fewer questions
How long has Dr. Hernan Robert Chang been practicing?
Dr. Chang graduated from medical school in 1982, 44 years ago.
Does Dr. Hernan Robert Chang do research?
Dmand AI links 4 publications to Dr. Chang, published from 2004 to 2006.
Who does Dr. Hernan Robert Chang publish with?
Dr. Chang's most frequent co-authors are Paul R. Skolnik, MD (1 shared paper).
What insurance does Dr. Hernan Robert Chang accept?
Dr. Chang is in network with 2 carriers, including Excellus BlueCross BlueShield and GA State Medicaid. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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