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Dr. David Tong Chen, MD
NPI1104453695
- Medicare services, 2024
- 263
- Medicare patients, 2024
- 119
- Part D claims, 2024
- 109
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 22 South Greene Street, Baltimore, MD 21201
- Practice phone
- Call (410) 328-8667
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen'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. David Tong Chen is an internist in Baltimore, Maryland
Dr. Chen practices at University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System.
Dr. Chen's NPI, 1104453695, was assigned on March 24, 2020. Dr. Chen holds Maryland license D97073.
NPI and contact details
- NPI
- 1104453695NPI Registry (opens in a new tab)
- NPI enumeration date
- March 24, 2020
- NPI status
- Active
- Practice phone
- (410) 328-8667
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Tong Chen practices at University of Maryland Medical Center in Baltimore, Maryland
Dr. Chen's primary practice is University of Maryland Medical Center, at 22 South Greene Street, Baltimore, MD 21201 in Baltimore City. The practice phone is (410) 328-8667.
- University of Maryland Medical Center22 South Greene Street, Baltimore, MD 21201 · Baltimore CityPhone(410) 328-8667
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Tong Chen is affiliated with 1 site of care and 1 medical group
Dr. Chen's primary practice is University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System. The medical group on file is University of Maryland Medical Center Gastroenterology and Hepatology.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Tong Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Maryland Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Tong Chen is one of 3,320 internists in Maryland
Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chen is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Chen
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
3,320internists in Maryland882internists in Baltimore47internists at University of Maryland Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David Tong Chen billed Medicare for 263 services in 2024
CMS data shows 263 Medicare services from Dr. Chen across 5 procedure codes in 2024, for 119 Medicare patients. Medicare paid $23,042 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024263
Medicare patients119
Paid by Medicare$23,042
Procedure codes5
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1962024: 23118%
- Other services
- 2023: 02024: 32
Dr. Chen compared with the Maryland median for internists, 2024
- Dr. Chen
- Maryland median
- Medicare services
- 263vs 65660% below
- Medicare patients
- 119vs 25153% below
- Part D claims
- 133vs 30957% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. 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.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Tong Chen treated 119 Medicare patients in 2024, average age 68
CMS counts 119 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 4.08, 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. Chen's median patient age at 81, with 33% women.
Medicare patients, 2024119
Average age68
Average risk score4.08
Also on Medicaid50%
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women6050%
- Men5950%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease61%
- Diabetes61%
- Ischemic heart disease56%
- Heart failure54%
- Arthritis53%
- Mood disorders52%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 81
Patient panel by sex, all payers
- Women33%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Tong Chen wrote 109 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 109 Medicare Part D claims for 42 patients. 79% of them were for generic drugs. They cover 10 drugs, with $2,345 in total drug cost. In 2022, CMS named 58 claims across 5 drugs.
Part D claims, 2024109
Drugs named by CMS10
Total drug cost$2,345
Part D patients42
Dr. Chen's Part D claims by kind of drug, 2024
- Generic86 claims79%
- Brand-name and other23 claims21%
Dr. Chen's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 582023: 133129%
Drugs named by CMS: 10 in 2023, 5 in 2022.
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
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Dr. David Tong Chen has 2 publications on record
Dmand AI links 2 papers to Dr. Chen, published from 2022 to 2023. Dr. Chen's most frequent co-authors are Sai Pavan Kumar Chintalapati, MD, Ahmed Nadi Khalil, MD and Ahmed S. Khalil, MD.
Papers2
Years published2022 to 2023
Dr. Chen's most frequent co-authors
- Sai Pavan Kumar Chintalapati, MD1 shared paper
- Ahmed Nadi Khalil, MD1 shared paper
- Ahmed S. Khalil, MD1 shared paper
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Tong Chen received $422 in industry payments from 2024 to 2025
CMS Open Payments shows 5 general payments to Dr. Chen from 4 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 76% of the total. Janssen Pharmaceuticals, Inc paid the most, $146.
General payments to Dr. Chen by program year, 2024 to 2025
General payments to Dr. Chen by kind, 2024 to 2025
$422in total
- Food and beverage$32276%
- Education$10024%
Companies that paid Dr. Chen the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David Tong 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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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) |
| 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) |
| 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. David Tong 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 Dr. David Tong Chen's NPI number?
Dr. David Tong Chen's NPI number is 1104453695. It was assigned on March 24, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. David Tong Chen?
Dr. David Tong Chen is an internist in Baltimore, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Tong Chen practice?
Dr. Chen practices at 22 South Greene Street, Baltimore, MD 21201. Dr. Chen's primary practice is University of Maryland Medical Center in Baltimore, Maryland, part of University of Maryland Medical System.
What is Dr. David Tong Chen's office phone number?
The practice phone on file for Dr. Chen is (410) 328-8667.
What is Dr. David Tong Chen's medical license number?
Dr. Chen holds Maryland license D97073.
Which hospitals is Dr. David Tong Chen affiliated with?
Dr. Chen practices at University of Maryland Medical Center in Baltimore, Maryland.
What medical group is Dr. David Tong Chen part of?
Dr. Chen is linked to University of Maryland Medical Center Gastroenterology and Hepatology.
Does Dr. David Tong Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 263 services in 2024.
How many Medicare patients does Dr. David Tong Chen see?
CMS counts 119 Medicare patients who saw Dr. Chen in 2024, with an average age of 68.
What services does Dr. David Tong Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Show 5 more questionsShow fewer questions
What drugs does Dr. David Tong Chen prescribe most?
In 2023 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Pantoprazole Sodium.
Has Dr. David Tong Chen received payments from drug or device companies?
CMS Open Payments shows $422 in general payments to Dr. Chen from 4 companies from 2024 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. David Tong Chen been practicing?
Dr. Chen graduated from medical school in 2020, 6 years ago.
Does Dr. David Tong Chen do research?
Dmand AI links 2 publications to Dr. Chen, published from 2022 to 2023.
Who does Dr. David Tong Chen publish with?
Dr. Chen's most frequent co-authors are Sai Pavan Kumar Chintalapati, MD (1 shared paper), Ahmed Nadi Khalil, MD (1 shared paper) and Ahmed S. Khalil, MD (1 shared paper).
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