Duyhuu Nguyen, M.D.
NPI 1366561458 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duyhuu Nguyen, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1366561458).
Provider details
- NPI number
- 1366561458
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301085787 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
691 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 223 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 186 | $79 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 123 | $174 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 114 | $114 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 30 | $136 |
| Initial Hospital Care With Same-Day Admission and Discharge With High Level of Medical Decision Making, Per Day, If Using Time, at Least 85 Minutes |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-28
- Last updated
- 2021-12-18
- Certified
- 2021-12-18
Frequently asked questions
- What is Duyhuu Nguyen's NPI number?
- Duyhuu Nguyen's National Provider Identifier (NPI) is 1366561458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duyhuu Nguyen's specialty?
- Duyhuu Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Duyhuu Nguyen located?
- Duyhuu Nguyen's practice location on file with NPPES is 836 W Wellington Ave, Chicago, IL 60657-5147.
- What is Duyhuu Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Duyhuu Nguyen is (312) 609-0300.
- Does Duyhuu Nguyen accept Medicare?
- Duyhuu Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duyhuu Nguyen's NPI active?
- Yes — Duyhuu Nguyen's NPI (1366561458) is active in the NPPES registry as of the last update on 2021-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.