Dr. Garrett D. Nguyen, MD
- Medicare services, 2024
- 198
- Medicare patients, 2024
- 281
- Hospital affiliations
- 2
- Industry payments
- $641
- Medical groups
- 3
- Practice address
- 34 Maple St, Norwalk, CT 06850
- Practice phone
- Call (203) 852-2216
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Norwalk Hospital
Norwalk, Connecticut
Find Dr. Nguyen'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. Garrett D. Nguyen is an anesthesiologist in Norwalk, Connecticut
Dr. Nguyen practices at Norwalk Hospital in Norwalk, Connecticut.
Dr. Nguyen's NPI, 1740283621, was assigned on May 24, 2005. Dr. Nguyen holds Connecticut license 042980.
- NPI
- 1740283621NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840245452
- NPI enumeration date
- May 24, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 852-2216
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Garrett D. Nguyen practices at Norwalk Hospital in Norwalk, Connecticut
Dr. Nguyen's primary practice is Norwalk Hospital, at 34 Maple St, Norwalk, CT 06850 in Western Ct County. The practice phone is (203) 852-2216.
- Norwalk Hospital34 Maple St, Norwalk, CT 06850 · Western Ct CountyPhone(203) 852-2216
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Garrett D. Nguyen is affiliated with 3 sites of care and 3 medical groups
Dr. Nguyen's primary practice is Norwalk Hospital in Norwalk, Connecticut. Dr. Nguyen is also affiliated with Norwalk Hospital. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. Nguyen to 1 more hospital and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Garrett D. 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 |
|---|---|
| Norwalk Hospital | 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. Garrett D. Nguyen is one of 654 anesthesiologists in Connecticut
Anesthesiology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Nguyen is licensed in Connecticut.
Specialties and state licenses
- Anesthesiology, ConnecticutPrimary
Anesthesiologists near Dr. Nguyen
Counts of anesthesiologists 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. Garrett D. Nguyen billed Medicare for 198 services in 2024
CMS data shows 198 Medicare services from Dr. Nguyen across 4 procedure codes in 2024, for 281 Medicare patients. Medicare paid $14,267 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
- Anesthesia
- 2023: 2762024: 19828%
Dr. Nguyen compared with the Connecticut median for anesthesiologists, 2024
- Dr. Nguyen
- Connecticut median
- Medicare services
- 198vs 892.2 times
- Medicare patients
- 281vs 16076% above
Medians across 636 anesthesiologists in Connecticut 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.
Need commercial claims for Dr. Nguyen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other anesthesiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Garrett D. Nguyen treated 281 Medicare patients in 2024, average age 75
CMS counts 281 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 75 to 84, with 114 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 19% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 64, with 50% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women14351%
- Men13849%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis42%
- Ischemic heart disease32%
- Anxiety30%
- Mood disorders28%
- Diabetes27%
- Atrial fibrillation22%
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 64
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Garrett D. 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. Garrett D. Nguyen received $641 in industry payments from 2017 to 2025
CMS Open Payments shows 29 general payments to Dr. Nguyen from 7 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $413.
General payments to Dr. Nguyen by program year, 2017 to 2025
Companies that paid Dr. Nguyen the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Garrett D. 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 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 National Downloadable File (CMS) (opens in a new tab) |
| 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. Garrett D. 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. Garrett D. Nguyen's NPI number?
Dr. Garrett D. Nguyen's NPI number is 1740283621. It was assigned on May 24, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Garrett D. Nguyen?
Dr. Garrett D. Nguyen is an anesthesiologist in Norwalk, Connecticut. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Garrett D. Nguyen practice?
Dr. Nguyen practices at 34 Maple St, Norwalk, CT 06850. Dr. Nguyen's primary practice is Norwalk Hospital in Norwalk, Connecticut. Dmand AI also links Dr. Nguyen to 1 hospital and 2 medical groups.
What is Dr. Garrett D. Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (203) 852-2216.
What is Dr. Garrett D. Nguyen's medical license number?
Dr. Nguyen holds Connecticut license 042980.
Which hospitals is Dr. Garrett D. Nguyen affiliated with?
Dr. Nguyen is affiliated with Norwalk Hospital. Dmand AI links Dr. Nguyen to 1 more hospital.
What medical group is Dr. Garrett D. Nguyen part of?
Dr. Nguyen is linked to Danbury Medical Group. Dmand AI links Dr. Nguyen to 2 more medical groups.
Does Dr. Garrett D. Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 198 services in 2024, and Dr. Nguyen accepts Medicare assignment.
How many Medicare patients does Dr. Garrett D. Nguyen see?
CMS counts 281 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 75.
What services does Dr. Garrett D. Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were anesthesia (00811), anesthesia (00731) and anesthesia (00813).
Has Dr. Garrett D. Nguyen received payments from drug or device companies?
CMS Open Payments shows $641 in general payments to Dr. Nguyen from 7 companies from 2017 to 2025. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.
How long has Dr. Garrett D. Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2020, 6 years ago.
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