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TRUMAN NGUYEN MD
NPI 1285201855
Allergy & Immunology in Iowa City, IA

Active since June 10, 2021PECOS EnrolledAccepts Medicare Assignment
200 HAWKINS DR, IOWA CITY, IA 52242(319) 356-8133(319) 353-6290 Get Directions Write a Review

NPPES record last updated: August 10, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 10, 2026, Jun 10, 2021 (2 updates tracked since 2021).

About Truman Nguyen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TRUMAN NGUYEN MD (NPI 1285201855) is an individual allergy & immunology provider in Iowa City, Iowa, licensed in Iowa (MD-52837) and active in the NPI registry since June 2021. He is enrolled in Medicare PECOS, is affiliated with University Of Iowa Hospital & Clinics, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1285201855
Entity TypeIndividualMale
Primary Taxonomy207K00000X
Provider Legal NameTRUMAN NGUYENCredential: MD
Location Address200 HAWKINS DRIowa City, IA 52242-1009
Mailing Address200 Hawkins DrIowa City, IA 52242-1009 · (319) 356-8133 · Fax (319) 353-6290
Phone(319) 356-8133
Fax(319) 353-6290
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJune 10, 2021
Last NPPES UpdateAugust 10, 20262 updates tracked since enumeration
NPPES CertifiedAugust 10, 2026
✔ NPI 1285201855 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in IA · MD-52837
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD-52837 (IA)
200 HAWKINS DR, Iowa City, IA 52242
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1500 E Market StIowa City, IA 52245-2633 · Phone (319) 339-3551 · Fax (319) 248-7945
Location 2105 E 9th StCoralville, IA 52241-2209 · Phone (319) 467-2627 · Fax (319) 353-6290

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Truman Nguyen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6406259738
PECOS Enrollment IDI20260804004660
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Truman Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

State University Of Iowa
Same address
Dentist
200 HAWKINS DRIVE, 51300 POMERANTZ FAMILY PAVILION
Iowa City, IA 52242
  • Reassigned Medicare billing, Iowa enrollment
  • 2,190 clinicians in this Medicare group
NPI 1114905387 (319) 356-2743

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Iowa Hospital & Clinics

Acute Care Hospitals · Iowa City, IA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number160058
Location200 Hawkins DriveIowa City, IA 52242 · Johnson County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SANGIL LEE M.D.
Emergency Medicine
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2233
RAMI G. EL ABIAD M.D.
Internal Medicine (Gastroenterology)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-4901
GRERK SUTAMTEWAGUL MD
Internal Medicine (Hematology & Oncology)
200 HAWKINS DR, DEPT OF INTERNAL MEDICINE
IOWA CITY, IA 52242
Johnson County (319) 356-1616
DR. KALEB TANNER VEIT D.O.
Internal Medicine (Critical Care Medicine)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2320
OMAR JABER M.D
Chronic Disease Hospital
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 471-8958
JENNIFER MANCUSO MS, CGC
Genetic Counselor, MS
200 HAWKINS DR, 31663 PFP
IOWA CITY, IA 52242
Johnson County (319) 384-7983
ASHLEY KAISER M.D.
Obstetrics & Gynecology
200 HAWKINS DR, DEPT OF OBGYN
IOWA CITY, IA 52242
Johnson County (319) 356-2294
MRS. NANCY JANE MILLICE
Health Educator
200 HAWKINS DR, 0733 JPP
IOWA CITY, IA 52242
Johnson County (319) 356-3825

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Truman Nguyen's NPI number?

The NPI number for Truman Nguyen is 1285201855. It was assigned to this individual provider in the NPPES registry on June 10, 2021.

Where is Truman Nguyen located?

Truman Nguyen practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 356-8133.

What is Truman Nguyen's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Truman Nguyen enrolled in Medicare?

Yes. Truman Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Truman Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Truman Nguyen reassigns Medicare benefits to State University Of Iowa (Iowa City, IA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Truman Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Truman Nguyen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 2 other insurers list Truman Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Truman Nguyen affiliated with any hospitals?

According to CMS data, Truman Nguyen is affiliated with University Of Iowa Hospital & Clinics.

When was this NPI record last updated?

The NPPES record for Truman Nguyen was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.