Tammy Phuong Nguyen, OD
- Medicare patients, 2024
- 16
- Part D claims, 2024
- 48
- Industry payments
- $18
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 111 E 4th St, Alton, IL 62002
- Practice phone
- Call (830) 896-2600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aeg Texas Professional
Alton, Illinois
Find Tammy 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.
Tammy Phuong Nguyen is an optometrist in Alton, Illinois
Tammy Nguyen practices at Aeg Texas Professional in Alton, Illinois.
Tammy Nguyen's NPI, 1073179891, was assigned on May 16, 2019. Tammy Nguyen graduated from Southern California College of Optometry in 2019. Tammy Nguyen holds Texas license 9813.
- NPI
- 1073179891NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022346006
- NPI enumeration date
- May 16, 2019
- NPI status
- Active
- Practice phone
- (830) 896-2600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Tammy Phuong Nguyen practices at Aeg Texas Professional in Alton, Illinois
Tammy Nguyen's primary practice is Aeg Texas Professional, at 111 E 4th St, Alton, IL 62002 in Madison County. The practice phone is (830) 896-2600.
- Aeg Texas Professional111 E 4th St, Alton, IL 62002 · Madison CountyPhone(830) 896-2600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Tammy Phuong Nguyen is affiliated with 3 sites of care and 2 medical groups
Tammy Nguyen's primary practice is Aeg Texas Professional in Alton, Illinois. Dmand AI also links Tammy Nguyen to 2 group practices and clinics and 2 medical groups, 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 Tammy Phuong Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Tammy Nguyen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aeg Texas Professional | 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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Tammy Phuong Nguyen is one of 2,194 optometrists in Illinois
Optometrist is Tammy Nguyen's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Tammy Nguyen is licensed in Texas.
Specialties and state licenses
- Optometrist, TexasPrimary
Optometrists near Tammy Nguyen
Counts of optometrists 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
Tammy Phuong Nguyen treated 16 Medicare patients in 2024, average age 77
CMS counts 16 Medicare patients who saw Tammy Nguyen in 2024. The largest group is under 65, with 0 patients. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Tammy Nguyen's median patient age at 68, with 60% women.
Tammy Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Tammy 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 68
Patient panel by sex, all payers
- Women60%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Tammy Phuong Nguyen wrote 48 Medicare Part D claims in 2024
In 2024, Tammy Nguyen wrote 48 Medicare Part D claims for 16 patients. 42% of them were for generic drugs.
Tammy Nguyen's Part D claims by kind of drug, 2024
- Generic20 claims42%
- Brand-name28 claims58%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Tammy Phuong Nguyen received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Tammy Nguyen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $18.
Companies that paid Tammy Nguyen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Tammy Phuong Nguyen graduated from Southern California College of Optometry
Tammy Nguyen graduated from Southern California College of Optometry in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Tammy Phuong 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 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 (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 Tammy Phuong 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 Tammy Phuong Nguyen's NPI number?
Tammy Phuong Nguyen's NPI number is 1073179891. It was assigned on May 16, 2019, and it is active in the NPI Registry.
What does Tammy Phuong Nguyen specialize in?
Tammy Phuong Nguyen is an optometrist in Alton, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Tammy Phuong Nguyen practice?
Tammy Nguyen practices at 111 E 4th St, Alton, IL 62002. Tammy Nguyen's primary practice is Aeg Texas Professional in Alton, Illinois. Dmand AI also links Tammy Nguyen to 2 group practices and clinics and 2 medical groups.
What is Tammy Phuong Nguyen's office phone number?
The practice phone on file for Tammy Nguyen is (830) 896-2600.
What is Tammy Phuong Nguyen's medical license number?
Tammy Nguyen holds Texas license 9813.
How many Medicare patients does Tammy Phuong Nguyen see?
CMS counts 16 Medicare patients who saw Tammy Nguyen in 2024, with an average age of 77.
Where did Tammy Phuong Nguyen go to medical school?
Tammy Nguyen graduated from Southern California College of Optometry in 2019.
Has Tammy Phuong Nguyen received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Tammy Nguyen from 1 company from 2025 to 2025. The largest total came from CooperVision Inc.
How long has Tammy Phuong Nguyen been practicing?
Tammy Nguyen graduated from medical school in 2019, 7 years ago.
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