Dr. Tam Nguyen, DO
- Medicare services, 2024
- 557
- Medicare patients, 2024
- 144
- Part D claims, 2024
- 376
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 101 Main St, Neenah, WI 54956
- Practice phone
- Call (920) 727-4200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ascension Medical Group
Neenah, Wisconsin
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. Tam Nguyen is a dermatologist in Neenah, Wisconsin
Dr. Nguyen practices at Ascension Medical Group in Neenah, Wisconsin.
Dr. Nguyen's NPI, 1619437365, was assigned on March 20, 2019. Dr. Nguyen graduated from Nova Southeastern College of Osteo Medicine in 2019. Dr. Nguyen holds Wisconsin license 81269.
- NPI
- 1619437365NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779912183
- NPI enumeration date
- March 20, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 727-4200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tam Nguyen practices at Ascension Medical Group in Neenah, Wisconsin
Dr. Nguyen's primary practice is Ascension Medical Group, at 101 Main St, Neenah, WI 54956 in Winnebago County. The practice phone is (920) 727-4200.
- Ascension Medical Group101 Main St, Neenah, WI 54956 · Winnebago CountyPhone(920) 727-4200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Tam Nguyen is affiliated with 3 sites of care and 1 medical group
Dr. Nguyen's primary practice is Ascension Medical Group in Neenah, Wisconsin. Dr. Nguyen is also affiliated with Ascension Columbia St. Mary's Hospital - Milwaukee Campus. The medical group on file is Ascension Medical Group WI - Main Street - Family Medicine. Dmand AI also links Dr. Nguyen to 1 more group practice or clinic, 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. Tam 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 |
|---|---|
| Ascension Medical Group | 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. Tam Nguyen is one of 436 dermatologists in Wisconsin
Dermatology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Nguyen is licensed in Wisconsin.
Specialties and state licenses
- Dermatology, WisconsinPrimary
Dermatologists near Dr. Nguyen
Counts of dermatologists 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. Tam Nguyen billed Medicare for 557 services in 2024
CMS data shows 557 Medicare services from Dr. Nguyen across 11 procedure codes in 2024, for 144 Medicare patients. Medicare paid $51,348 for them. Every service was in an office.
Dr. Nguyen's Medicare services by type, 2024
- Surgery439
- Office and hospital visits118
Dr. Nguyen compared with the Wisconsin median for dermatologists, 2024
- Dr. Nguyen
- Wisconsin median
- Medicare services
- 557vs 1,89371% below
- Medicare patients
- 144vs 51872% below
- Part D claims
- 283vs 51845% below
Medians across 439 dermatologists in Wisconsin 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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other dermatologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tam Nguyen treated 144 Medicare patients in 2024, average age 74
CMS counts 144 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 79 patients. 72% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 72, with 48% 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
- Women6646%
- Men7854%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High cholesterol72%
- High blood pressure60%
- Arthritis51%
- Diabetes22%
- Ischemic heart disease22%
- Anxiety19%
- Chronic kidney disease19%
- Cancer17%
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 72
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tam Nguyen wrote 376 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 376 Medicare Part D claims for 208 patients. 98% of them were for generic drugs. CMS names the drug for 283 of them, across 10 drugs with 11 or more claims each, at $4,787 in total drug cost.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic369 claims98%
- Brand-name and other7 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
- Antibiotics29%109 of 376 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Dr. Tam Nguyen ranks in the 93rd percentile for melanoma (skin cancer) excision in Medicare
Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 96 procedures of melanoma (skin cancer) excision by Dr. Nguyen, more than 93% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Nguyen ranks in Medicare procedure volume
- Removal of skin lesions
- 87th percentile555 procedures
- Removal of skin cancer
- 37th percentile233 procedures
- Skin biopsy
- 81st percentile158 procedures
- Melanoma (skin cancer) excision
- 93rd percentile96 procedures
- Removal or shaving of skin growth
- 76th percentile35 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Tam Nguyen has 1 publication on record
Dmand AI links 1 paper to Dr. Nguyen in 2025. Dr. Nguyen's most frequent co-authors are Steven Barilla, MD and Eli Richard Saleeby, MD.
Dr. Nguyen's most frequent co-authors
Recent publications by Dr. Nguyen
See who Dr. Nguyen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nguyen works with, so you can find a warm path to the right dermatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Tam Nguyen received $3,330 in industry payments from 2022 to 2025
CMS Open Payments shows 82 general payments to Dr. Nguyen from 15 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $1,304.
General payments to Dr. Nguyen by program year, 2022 to 2025
General payments to Dr. Nguyen by kind, 2022 to 2025
- Food and beverage$3,16195%
- Speaker and faculty fees$973%
- Education$722%
Companies that paid Dr. Nguyen the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Tam Nguyen graduated from Nova Southeastern College of Osteo Medicine
Dr. Nguyen graduated from Nova Southeastern College of Osteo Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Tam 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)Doctors and Clinicians Utilization Data (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) |
| 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. Tam 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. Tam Nguyen's NPI number?
Dr. Tam Nguyen's NPI number is 1619437365. It was assigned on March 20, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Tam Nguyen?
Dr. Tam Nguyen is a dermatologist in Neenah, Wisconsin. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. Tam Nguyen practice?
Dr. Nguyen practices at 101 Main St, Neenah, WI 54956. Dr. Nguyen's primary practice is Ascension Medical Group in Neenah, Wisconsin. Dmand AI also links Dr. Nguyen to 1 group practice or clinic.
What is Dr. Tam Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (920) 727-4200.
What is Dr. Tam Nguyen's medical license number?
Dr. Nguyen holds Wisconsin license 81269.
Which hospitals is Dr. Tam Nguyen affiliated with?
Dr. Nguyen is affiliated with Ascension Columbia St. Mary's Hospital - Milwaukee Campus.
What medical group is Dr. Tam Nguyen part of?
Dr. Nguyen is linked to Ascension Medical Group WI - Main Street - Family Medicine.
Does Dr. Tam Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 557 services in 2024, and Dr. Nguyen accepts Medicare assignment.
How many Medicare patients does Dr. Tam Nguyen see?
CMS counts 144 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 74.
What services does Dr. Tam Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were surgery: skin and soft tissue (17003), surgery: skin and soft tissue (17000) and office visit, new patient (99203).
Show 6 more questionsShow fewer questions
Where did Dr. Tam Nguyen go to medical school?
Dr. Nguyen graduated from Nova Southeastern College of Osteo Medicine in 2019.
What drugs does Dr. Tam Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Doxycycline Monohydrate, Triamcinolone Acetonide and Clobetasol Propionate.
Has Dr. Tam Nguyen received payments from drug or device companies?
CMS Open Payments shows $3,330 in general payments to Dr. Nguyen from 15 companies from 2022 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Tam Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2019, 7 years ago.
Does Dr. Tam Nguyen do research?
Dmand AI links 1 publication to Dr. Nguyen.
Who does Dr. Tam Nguyen publish with?
Dr. Nguyen's most frequent co-authors are Steven Barilla, MD (1 shared paper) and Eli Richard Saleeby, MD (1 shared paper).
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