Cardiovasc Revasc Med
Aortic ValveAortic Valve StenosisHeart Valve Prosthesis
Dr. Chiwon Hahn, MD
NPI1598784704PAC ID4587729520
- Medicare services, 2024
- 293
- Medicare patients, 2024
- 218
- Part D claims, 2024
- 259
- Publications
- 11
- Clinical trials
- 1
- Practice address
- 1602 Skipwith Road, Richmond, VA 23229
- Practice phone
- Call (804) 289-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hahn'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. Chiwon Hahn is a cardiothoracic surgeon in Henrico, Virginia
Dr. Hahn practices at Henrico Doctors' Hospital in Richmond, Virginia, part of HCA Healthcare.
Dr. Hahn's NPI, 1598784704, was assigned on July 19, 2006. Dr. Hahn graduated from Columbia University College of Physicians and Surgeons in 1987. Dr. Hahn holds Virginia license 0101055201.
NPI and contact details
- NPI
- 1598784704NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587729520
- NPI enumeration date
- July 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (804) 289-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chiwon Hahn practices at Henrico Doctors' Hospital in Richmond, Virginia
Dr. Hahn's primary practice is Henrico Doctors' Hospital, at 1602 Skipwith Road, Richmond, VA 23229 in Henrico County. The practice phone is (804) 289-4500.
- Henrico Doctors' Hospital1602 Skipwith Road, Richmond, VA 23229 · Henrico CountyPhone(804) 289-4500
Source: Dmand AI Affiliation Data
Dr. Chiwon Hahn is affiliated with 5 sites of care and 1 medical group
Dr. Hahn's primary practice is Henrico Doctors' Hospital in Richmond, Virginia, part of HCA Healthcare. Dr. Hahn is also affiliated with Chippenham Hospital. The medical group on file is Cardiothoracic Surgical Associates. Dmand AI also links Dr. Hahn to 1 more hospital and 2 home health agencies, each named with a free account.
Chippenham HospitalCardiothoracic Surgical Associates1 hospitalName with a free account2 home health agenciesNames with a free account
See all 6 affiliations for Dr. HahnSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chiwon Hahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hahn practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Henrico Doctors' Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chiwon Hahn is one of 130 cardiothoracic surgeons in Virginia
Thoracic surgery (cardiothoracic vascular surgery) is Dr. Hahn's primary specialty in the NPI Registry, under taxonomy code 208G00000X. Dr. Hahn is licensed in Virginia.
Specialties and state licenses
- Thoracic surgery (cardiothoracic vascular surgery), VirginiaPrimary
Cardiothoracic surgeons near Dr. Hahn
Counts of cardiothoracic surgeons 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. Chiwon Hahn billed Medicare for 293 services in 2024
CMS data shows 293 Medicare services from Dr. Hahn across 9 procedure codes in 2024, for 218 Medicare patients. Medicare paid $95,145 for them.
Medicare services, 2024293
Medicare patients218
Paid by Medicare$95,145
Procedure codes9
Dr. Hahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1462024: 146No change
- Surgery
- 2023: 1272024: 1356%
- Tests and treatments
- 2023: 162024: 1225%
Where Dr. Hahn's Medicare services took place, 2024
- In an office11439%
- In a facility17961%
Dr. Hahn compared with the Virginia median for cardiothoracic surgeons, 2024
- Dr. Hahn
- Virginia median
- Medicare services
- 293vs 1282.3 times
- Medicare patients
- 218vs 12180% above
- Part D claims
- 180vs 1810.0 times
Medians across 117 cardiothoracic surgeons in Virginia with Dmand AI profiles that report each measure.
Dr. Hahn's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hahn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hahn and other cardiothoracic surgeons in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chiwon Hahn treated 218 Medicare patients in 2024, average age 78
CMS counts 218 Medicare patients who saw Dr. Hahn in 2024. The largest group is 75 to 84, with 94 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.65, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hahn's median patient age at 75, with 34% women.
Medicare patients, 2024218
Average age78
Average risk score1.65
Also on Medicaid6%
Dr. Hahn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hahn's Medicare patients by sex, 2024
- Women10046%
- Men11854%
Chronic conditions among Dr. Hahn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease75%
- Heart failure64%
- Atrial fibrillation52%
- Arthritis51%
- Diabetes41%
- Chronic kidney disease38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women34%
- Men65%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chiwon Hahn wrote 259 Medicare Part D claims in 2024
In 2024, Dr. Hahn wrote 259 Medicare Part D claims for 129 patients. 99% of them were for generic drugs. CMS names the drug for 180 of them, across 5 drugs with 11 or more claims each, at $886 in total drug cost. In 2023, CMS named 203 claims across 6 drugs.
Part D claims, 2024259
Drugs named by CMS5
Total drug cost$886
Part D patients129
Dr. Hahn's Part D claims by kind of drug, 2024
- Generic256 claims99%
- Brand-name and other3 claims1%
Dr. Hahn'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. Hahn's Part D claims, 2024
- Antibiotics38%98 of 259 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2032024: 18011%
Drugs named by CMS: 5 in 2024, 6 in 2023.
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
Dr. Chiwon Hahn scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Hahn for performance year 2024, reported as part of a group. Dr. Hahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hahn as offering telehealth. CMS counts 25 procedures of coronary artery bypass graft (cabg) by Dr. Hahn, more than 76% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Hahn's MIPS scores, performance year 2024
- 89of 100Final score
- 80.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Hahn ranks in Medicare procedure volume
- Coronary artery bypass graft (CABG)
- 76th percentile25 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chiwon Hahn has 11 publications on record
Dmand AI links 11 papers to Dr. Hahn, published from 2018 to 2021. 2020 was the busiest year, with 5. The most frequent topics are Heart Valve Prosthesis, Transcatheter Aortic Valve Replacement and Aortic Valve. Dr. Hahn has published most often in Cardiovasc Revasc Med. Dr. Hahn's most frequent co-authors are Thomas Bilfinger, MD, Christian C. Shults, MD and Ron Waksman, MD.
Papers11
Years published2018 to 2021
Dr. Hahn's papers by year, 2018 to 2021
Topics Dr. Hahn writes about most
- Heart Valve Prosthesis
- Transcatheter Aortic Valve Replacement
- Aortic Valve
- Aortic Valve Stenosis
- Comorbidity
Dr. Hahn's most frequent co-authors
- Thomas Bilfinger, MD11 shared papers
- Christian C. Shults, MD11 shared papers
- Ron Waksman, MD11 shared papers
Recent publications by Dr. Hahn
Cardiovasc Revasc Med
Aortic ValveClinical Decision-MakingComorbidity
See who Dr. Hahn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hahn works with, so you can find a warm path to the right cardiothoracic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chiwon Hahn has worked on 1 clinical trial
Dmand AI links Dr. Hahn to 1 clinical trial. Conditions studied include Ventricular Outflow Obstruction and Aortic Valve Stenosis.
Conditions in Dr. Hahn's trials
- Ventricular Outflow Obstruction
- Aortic Valve Stenosis
Investigators on the most trials with Dr. Hahn
Recent clinical trials with Dr. Hahn
PROACT Xa - A Trial to Determine if Participants With an On-X Aortic Valve Can be Maintained Safely on Apixaban (opens in a new tab)
TerminatedPhase 3
Ventricular Outflow ObstructionAortic Valve StenosisApixaban 2.5 MGApixaban 5 MGWarfarin
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Chiwon Hahn received $3,115 in industry payments from 2016 to 2025
CMS Open Payments shows 56 general payments to Dr. Hahn from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Edwards Lifesciences Corporation paid the most, $1,181.
General payments to Dr. Hahn by program year, 2016 to 2025
Companies that paid Dr. Hahn 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. Chiwon Hahn graduated from Columbia University College of Physicians and Surgeons
Dr. Hahn graduated from Columbia University College of Physicians and Surgeons in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chiwon Hahn'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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 |
| 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. Chiwon Hahn
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. Chiwon Hahn's NPI number?
Dr. Chiwon Hahn's NPI number is 1598784704. It was assigned on July 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chiwon Hahn?
Dr. Chiwon Hahn is a cardiothoracic surgeon in Henrico, Virginia. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).
Where does Dr. Chiwon Hahn practice?
Dr. Hahn practices at 1602 Skipwith Road, Richmond, VA 23229. Dr. Hahn's primary practice is Henrico Doctors' Hospital in Richmond, Virginia, part of HCA Healthcare. Dmand AI also links Dr. Hahn to 1 hospital and 2 home health agencies.
What is Dr. Chiwon Hahn's office phone number?
The practice phone on file for Dr. Hahn is (804) 289-4500.
What is Dr. Chiwon Hahn's medical license number?
Dr. Hahn holds Virginia license 0101055201.
Which hospitals is Dr. Chiwon Hahn affiliated with?
Dr. Hahn practices at Henrico Doctors' Hospital in Richmond, Virginia. Dr. Hahn is also affiliated with Chippenham Hospital. Dmand AI links Dr. Hahn to 1 more hospital.
What medical group is Dr. Chiwon Hahn part of?
Dr. Hahn is linked to Cardiothoracic Surgical Associates.
Does Dr. Chiwon Hahn accept Medicare?
Yes. CMS data shows Dr. Hahn billed Medicare for 293 services in 2024, and Dr. Hahn accepts Medicare assignment.
Does Dr. Chiwon Hahn offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hahn as offering telehealth services.
What is Dr. Chiwon Hahn's MIPS score?
Dr. Hahn's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Chiwon Hahn see?
CMS counts 218 Medicare patients who saw Dr. Hahn in 2024, with an average age of 78.
What services does Dr. Chiwon Hahn bill to Medicare?
In 2024, Dr. Hahn's most billed Medicare services were surgery: heart and blood vessels (33361), office visit, new patient (99204) and office visit, new patient (99203).
Where did Dr. Chiwon Hahn go to medical school?
Dr. Hahn graduated from Columbia University College of Physicians and Surgeons in 1987.
What drugs does Dr. Chiwon Hahn prescribe most?
In 2024 Medicare Part D data, Dr. Hahn's most prescribed drugs by claims were Amoxicillin, Metoprolol Tartrate and Mupirocin.
Has Dr. Chiwon Hahn received payments from drug or device companies?
CMS Open Payments shows $3,115 in general payments to Dr. Hahn from 11 companies from 2016 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. Chiwon Hahn been practicing?
Dr. Hahn graduated from medical school in 1987, 39 years ago.
Does Dr. Chiwon Hahn do research?
Dmand AI links 11 publications to Dr. Hahn, published from 2018 to 2021. Dr. Hahn has worked on 1 clinical trial.
Who does Dr. Chiwon Hahn publish with?
Dr. Hahn's most frequent co-authors are Thomas Bilfinger, MD (11 shared papers), Christian C. Shults, MD (11 shared papers) and Ron Waksman, MD (11 shared papers).
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