Thomas Chen
- Medicare services, 2024
- 846
- Medicare patients, 2024
- 263
- Part D claims, 2024
- 368
- Hospital affiliations
- 1
- Industry payments
- $155
- Practice address
- 24 Hospital Ave, Danbury, CT 06810
- Practice phone
- Call (203) 739-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Thomas Chen's professional email, personal email and mobile number
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Thomas Chen is an infectious disease specialist in Danbury, Connecticut
Thomas Chen practices at Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health.
Thomas Chen's NPI, 1184042384, was assigned on April 3, 2014. Thomas Chen graduated from St. George's University School of Medicine in 2014. Thomas Chen holds New York license 289729.
- NPI
- 1184042384NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183968787
- NPI enumeration date
- April 3, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 739-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Thomas Chen practices at Northwell Danbury Hospital in Danbury, Connecticut
Thomas Chen's primary practice is Northwell Danbury Hospital, at 24 Hospital Ave, Danbury, CT 06810 in Fairfield County. The practice phone is (203) 739-7000.
- Northwell Danbury Hospital24 Hospital Ave, Danbury, CT 06810 · Fairfield CountyPhone(203) 739-7000
Source: Dmand AI Affiliation Data
Thomas Chen is affiliated with 2 sites of care and 3 medical groups
Thomas Chen's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI also links Thomas Chen to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Thomas Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwell Danbury Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwell Health and 6.2K+ hospitals, with verified contacts in the same login.
Thomas Chen is one of 168 infectious disease specialists in Connecticut
Infectious disease is Thomas Chen's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dmand AI has Thomas Chen's licenses on file in 2 states: New York and Connecticut.
Specialties and state licenses
- Infectious disease, New YorkPrimary
- Connecticut license
Infectious disease specialists near Thomas Chen
Counts of infectious disease specialists 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
Thomas Chen billed Medicare for 846 services in 2024
CMS data shows 846 Medicare services from Thomas Chen across 10 procedure codes in 2024, for 263 Medicare patients. Medicare paid $78,595 for them.
Thomas Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5782024: 76232%
- Other services
- 2023: 02024: 84
Where Thomas Chen's Medicare services took place, 2024
- In an office27132%
- In a facility57568%
Thomas Chen compared with the Connecticut median for infectious disease specialists, 2024
- Thomas Chen
- Connecticut median
- Medicare services
- 846vs 2183.9 times
- Medicare patients
- 263vs 1032.6 times
- Part D claims
- 246vs 1202.0 times
Medians across 151 infectious disease specialists in Connecticut with Dmand AI profiles that report each measure.
Thomas Chen'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Thomas Chen and other infectious disease specialists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Thomas Chen treated 263 Medicare patients in 2024, average age 75
CMS counts 263 Medicare patients who saw Thomas Chen in 2024. The largest group is 65 to 74, with 90 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Thomas Chen's median patient age at 72, with 47% women.
Thomas Chen's Medicare patients by age, 2024
Thomas Chen's Medicare patients by sex, 2024
- Women11644%
- Men14756%
Chronic conditions among Thomas Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease57%
- Arthritis54%
- Mood disorders44%
- Atrial fibrillation43%
- Chronic kidney disease43%
- Diabetes42%
Share of Medicare patients with each condition. A patient can have several.
Thomas Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Thomas Chen wrote 368 Medicare Part D claims in 2024
In 2024, Thomas Chen wrote 368 Medicare Part D claims for 77 patients. 80% of them were for generic drugs. CMS names the drug for 246 of them, across 11 drugs with 11 or more claims each, at $31,791 in total drug cost. In 2023, CMS named 100 claims across 6 drugs.
Thomas Chen's Part D claims by kind of drug, 2024
- Generic296 claims80%
- Brand-name and other72 claims20%
Thomas Chen'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 Thomas Chen's Part D claims, 2024
- Antibiotics75%276 of 368 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: 1002024: 246146%
Drugs named by CMS: 11 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
Thomas Chen ranks in the 82nd percentile for removal of tissue in Medicare
Thomas Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Thomas Chen as offering telehealth. CMS counts 70 procedures of removal of tissue by Thomas Chen, more than 82% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Thomas Chen ranks in Medicare procedure volume
- Removal of tissue
- 82nd percentile70 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Thomas Chen received $155 in industry payments from 2023 to 2025
CMS Open Payments shows 6 general payments to Thomas Chen from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $67.
General payments to Thomas Chen by program year, 2023 to 2025
Companies that paid Thomas Chen the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Thomas Chen graduated from St. George's University School of Medicine
Thomas Chen graduated from St. George's University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Thomas Chen'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)Doctors and Clinicians Utilization Data (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 |
| 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 Thomas Chen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Thomas Chen's NPI number?
Thomas Chen's NPI number is 1184042384. It was assigned on April 3, 2014, and it is active in the NPI Registry.
What does Thomas Chen specialize in?
Thomas Chen is an infectious disease specialist in Danbury, Connecticut. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Thomas Chen practice?
Thomas Chen practices at 24 Hospital Ave, Danbury, CT 06810. Thomas Chen's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. Dmand AI also links Thomas Chen to 2 medical groups and 1 group practice or clinic.
What is Thomas Chen's office phone number?
The practice phone on file for Thomas Chen is (203) 739-7000.
What is Thomas Chen's medical license number?
Thomas Chen holds New York license 289729, one of the licenses on file in 2 states.
Which states has Thomas Chen been licensed in?
Dmand AI has state licenses on file for Thomas Chen in New York and Connecticut.
Which hospitals is Thomas Chen affiliated with?
Thomas Chen practices at Northwell Danbury Hospital in Danbury, Connecticut.
What medical group is Thomas Chen part of?
Thomas Chen is linked to Northwell Health Physician Partners Cardiology at Great Neck. Dmand AI links Thomas Chen to 2 more medical groups.
Does Thomas Chen accept Medicare?
Yes. CMS data shows Thomas Chen billed Medicare for 846 services in 2024, and Thomas Chen accepts Medicare assignment.
Does Thomas Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Thomas Chen as offering telehealth services.
Show 6 more questionsShow fewer questions
How many Medicare patients does Thomas Chen see?
CMS counts 263 Medicare patients who saw Thomas Chen in 2024, with an average age of 75.
What services does Thomas Chen bill to Medicare?
In 2024, Thomas Chen's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99223).
Where did Thomas Chen go to medical school?
Thomas Chen graduated from St. George's University School of Medicine in 2014.
What drugs does Thomas Chen prescribe most?
In 2024 Medicare Part D data, Thomas Chen's most prescribed drugs by claims were Cefadroxil, Sulfamethoxazole-Trimethoprim and Vancomycin HCl.
Has Thomas Chen received payments from drug or device companies?
CMS Open Payments shows $155 in general payments to Thomas Chen from 3 companies from 2023 to 2025. The largest total came from Abbvie Inc.
How long has Thomas Chen been practicing?
Thomas Chen graduated from medical school in 2014, 12 years ago.
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