Dr. Dieu-Thi Thi Nguyen, MD
- Medicare services, 2021
- 541
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 3,599
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 6111 Executive Blvd, Rockville, MD 20852
- Practice phone
- Call (301) 816-2424
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Caton Hill Medical Center
Rockville, Maryland
Find Dr. Nguyen's professional email, personal email and mobile number
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Dr. Dieu-Thi Thi Nguyen is an internist in Rockville, Maryland
Dr. Nguyen practices at Caton Hill Medical Center in Rockville, Maryland.
Dr. Nguyen's NPI, 1134419419, was assigned on April 7, 2011. Dr. Nguyen graduated from Geisel School of Medicine at Dartmouth in 2011. Dr. Nguyen holds Virginia license 0101256365.
- NPI
- 1134419419NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092944835
- NPI enumeration date
- April 7, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (301) 816-2424
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dieu-Thi Thi Nguyen practices at Caton Hill Medical Center in Rockville, Maryland
Dr. Nguyen's primary practice is Caton Hill Medical Center, at 6111 Executive Blvd, Rockville, MD 20852 in Montgomery County. The practice phone is (301) 816-2424.
- Caton Hill Medical Center6111 Executive Blvd, Rockville, MD 20852 · Montgomery CountyPhone(301) 816-2424
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dieu-Thi Thi Nguyen is affiliated with 3 sites of care and 1 medical group
Dr. Nguyen's primary practice is Caton Hill Medical Center in Rockville, Maryland. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Nguyen to 1 more group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dieu-Thi Thi Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Caton Hill Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dieu-Thi Thi Nguyen is one of 3,320 internists in Maryland
Internal medicine is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Nguyen is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Nguyen
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. Dieu-Thi Thi Nguyen billed Medicare for 541 services in 2021
CMS data shows 541 Medicare services from Dr. Nguyen across 7 procedure codes in 2021, for 13 Medicare patients. Medicare paid $16,819 for them. Every service was in an office.
Dr. Nguyen's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Other services
- 2020: 02021: 541
- Office and hospital visits
- 2020: 162021: 0100%
Dr. Nguyen compared with the Maryland median for internists, 2021
- Dr. Nguyen
- Maryland median
- Medicare services
- 541vs 65618% below
- Medicare patients
- 13vs 25195% below
- Part D claims
- 3,120vs 30910.1 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Nguyen'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. Nguyen and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dieu-Thi Thi Nguyen treated 13 Medicare patients in 2024, average age 73
CMS counts 13 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.64, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 56, with 66% women.
Dr. Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nguyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women66%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dieu-Thi Thi Nguyen wrote 3,599 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 3,599 Medicare Part D claims for 323 patients. 86% of them were for generic drugs. CMS names the drug for 3,120 of them, across 68 drugs with 11 or more claims each, at $153,155 in total drug cost. In 2023, CMS named 3,500 claims across 70 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic3,106 claims86%
- Brand-name434 claims12%
- Other59 claims2%
Dr. Nguyen'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. Nguyen's Part D claims, 2024
- Antibiotics1%43 of 3,599 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: 3,5002024: 3,12011%
Drugs named by CMS: 68 in 2024, 70 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
How Dr. Dieu-Thi Thi Nguyen takes part in Medicare
Dr. Nguyen 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. Dieu-Thi Thi Nguyen graduated from Geisel School of Medicine at Dartmouth
Dr. Nguyen graduated from Geisel School of Medicine at Dartmouth in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Dieu-Thi Thi Nguyen'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Dieu-Thi Thi Nguyen
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. Dieu-Thi Thi Nguyen's NPI number?
Dr. Dieu-Thi Thi Nguyen's NPI number is 1134419419. It was assigned on April 7, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Dieu-Thi Thi Nguyen?
Dr. Dieu-Thi Thi Nguyen is an internist in Rockville, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dieu-Thi Thi Nguyen practice?
Dr. Nguyen practices at 6111 Executive Blvd, Rockville, MD 20852. Dr. Nguyen's primary practice is Caton Hill Medical Center in Rockville, Maryland. Dmand AI also links Dr. Nguyen to 1 group practice or clinic and 1 home health agency.
What is Dr. Dieu-Thi Thi Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (301) 816-2424.
What is Dr. Dieu-Thi Thi Nguyen's medical license number?
Dr. Nguyen holds Virginia license 0101256365.
What medical group is Dr. Dieu-Thi Thi Nguyen part of?
Dr. Nguyen is linked to Mid-Atlantic Permanente Medical Group.
Does Dr. Dieu-Thi Thi Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 541 services in 2021, and Dr. Nguyen accepts Medicare assignment.
How many Medicare patients does Dr. Dieu-Thi Thi Nguyen see?
CMS counts 13 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 73.
What services does Dr. Dieu-Thi Thi Nguyen bill to Medicare?
In 2021, Dr. Nguyen's most billed Medicare services were medical service (0002A), medical service (0001A) and medical service (0004A).
Where did Dr. Dieu-Thi Thi Nguyen go to medical school?
Dr. Nguyen graduated from Geisel School of Medicine at Dartmouth in 2011.
What drugs does Dr. Dieu-Thi Thi Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
How long has Dr. Dieu-Thi Thi Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2011, 15 years ago.
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