Dr. Hien Tan Nguyen, MD
- Medicare services, 2024
- 150
- Medicare patients, 2024
- 131
- Hospital affiliations
- 2
- Industry payments
- $75,024
- Medical groups
- 3
- Practice address
- 4940 Eastern Avenue, Baltimore, MD 21224
- Practice phone
- Call (410) 550-0123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nguyen's professional email, personal email and mobile number
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Dr. Hien Tan Nguyen is a general surgeon in Baltimore, Maryland
Dr. Nguyen practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System.
Dr. Nguyen's NPI, 1528246634, was assigned on January 31, 2008. Dr. Nguyen graduated from University of California, Davis School of Medicine in 2003. Dr. Nguyen holds Maryland license D67008.
- NPI
- 1528246634NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416015722
- NPI enumeration date
- January 31, 2008
- NPI status
- Active
- Practice phone
- (410) 550-0123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Hien Tan Nguyen practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland
Dr. Nguyen's primary practice is Johns Hopkins Bayview Medical Center, at 4940 Eastern Avenue, Baltimore, MD 21224 in Baltimore City. The practice phone is (410) 550-0123.
- Johns Hopkins Bayview Medical Center4940 Eastern Avenue, Baltimore, MD 21224 · Baltimore CityPhone(410) 550-0123
Source: Dmand AI Affiliation Data
Dr. Hien Tan Nguyen is affiliated with 3 sites of care and 3 medical groups
Dr. Nguyen's primary practice is Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System. Dr. Nguyen is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University. Dmand AI also links Dr. Nguyen to 2 more medical groups and 1 home health agency, 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. Hien Tan Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Johns Hopkins Bayview Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hien Tan Nguyen is one of 532 general surgeons in Maryland
Surgery is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Nguyen's licenses on file in 2 states: Maryland and California.
Specialties and state licenses
- Surgery, MarylandPrimary
- California license
General surgeons near Dr. Nguyen
Counts of general 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. Hien Tan Nguyen billed Medicare for 150 services in 2024
CMS data shows 150 Medicare services from Dr. Nguyen across 7 procedure codes in 2024, for 131 Medicare patients. Medicare paid $24,564 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 572024: 117105%
- Surgery
- 2023: 02024: 33
Dr. Nguyen compared with the Maryland median for general surgeons, 2024
- Dr. Nguyen
- Maryland median
- Medicare services
- 150vs 23035% below
- Medicare patients
- 131vs 16219% below
Medians across 485 general surgeons in Maryland with Dmand AI profiles that report each measure.
Dr. Nguyen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hien Tan Nguyen treated 131 Medicare patients in 2024, average age 71
CMS counts 131 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.67, 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. Nguyen's median patient age at 69, with 44% women.
Dr. Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nguyen's Medicare patients by sex, 2024
- Women5240%
- Men7960%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis50%
- Mood disorders31%
- Diabetes30%
- Anxiety29%
- Cancer28%
- Depression27%
Share of Medicare patients with each condition. A patient can have several.
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 69
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hien Tan Nguyen ranks in the 95th percentile for hernia repair (minimally invasive) in Medicare
CMS counts 30 procedures of hernia repair (minimally invasive) by Dr. Nguyen, more than 95% of the clinicians it reports for that procedure.
Where Dr. Nguyen ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 95th percentile30 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
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Dr. Hien Tan Nguyen received $75,024 in industry payments from 2016 to 2025
CMS Open Payments shows 182 general payments to Dr. Nguyen from 13 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 44% of the total. Allergan Inc. paid the most, $38,943.
General payments to Dr. Nguyen by program year, 2016 to 2025
General payments to Dr. Nguyen by kind, 2016 to 2025
- Speaker and faculty fees$33,11944%
- Consulting fees$17,76024%
- Travel and lodging$14,16619%
- Food and beverage$7,28810%
- Other$2,6914%
Companies that paid Dr. Nguyen 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. Hien Tan Nguyen graduated from University of California, Davis School of Medicine
Dr. Nguyen graduated from University of California, Davis School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Hien Tan 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 | 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | 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 Dr. Hien Tan 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. Hien Tan Nguyen's NPI number?
Dr. Hien Tan Nguyen's NPI number is 1528246634. It was assigned on January 31, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Hien Tan Nguyen?
Dr. Hien Tan Nguyen is a general surgeon in Baltimore, Maryland. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Hien Tan Nguyen practice?
Dr. Nguyen practices at 4940 Eastern Avenue, Baltimore, MD 21224. Dr. Nguyen's primary practice is Johns Hopkins Bayview Medical Center in Baltimore, Maryland, part of Johns Hopkins Health System. Dmand AI also links Dr. Nguyen to 2 medical groups and 1 home health agency.
What is Dr. Hien Tan Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (410) 550-0123.
What is Dr. Hien Tan Nguyen's medical license number?
Dr. Nguyen holds Maryland license D67008, one of the licenses on file in 2 states.
Which states has Dr. Hien Tan Nguyen been licensed in?
Dmand AI has state licenses on file for Dr. Nguyen in Maryland and California.
Which hospitals is Dr. Hien Tan Nguyen affiliated with?
Dr. Nguyen practices at Johns Hopkins Bayview Medical Center in Baltimore, Maryland. Dr. Nguyen is also affiliated with The Johns Hopkins Hospital.
What medical group is Dr. Hien Tan Nguyen part of?
Dr. Nguyen is linked to Johns Hopkins University. Dmand AI links Dr. Nguyen to 2 more medical groups.
Does Dr. Hien Tan Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 150 services in 2024.
How many Medicare patients does Dr. Hien Tan Nguyen see?
CMS counts 131 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Hien Tan Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, new patient (99203), office visit, new patient (99204) and office visit, established patient (99214).
Where did Dr. Hien Tan Nguyen go to medical school?
Dr. Nguyen graduated from University of California, Davis School of Medicine in 2003.
Has Dr. Hien Tan Nguyen received payments from drug or device companies?
CMS Open Payments shows $75,024 in general payments to Dr. Nguyen from 13 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. Hien Tan Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2003, 23 years ago.
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