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FIONA THUY THI CHIU MD
NPI 1437759172
Internal Medicine in Fort Collins, CO

Active since October 30, 2020PECOS EnrolledAccepts Medicare Assignment
2021 BATTLECREEK DR UNIT A, FORT COLLINS, CO 80528(970) 818-5725 Get Directions Write a Review

NPPES record last updated: January 29, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 29, 2026, Jun 24, 2025, Jun 3, 2025 and 1 more (4 updates tracked since 2020).

About Fiona Thuy Thi Chiu Md NPPES

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

FIONA THUY THI CHIU MD (NPI 1437759172) is an individual internal medicine provider in Fort Collins, Colorado, licensed in Colorado (DR.0074797) and active in the NPI registry since October 2020. She is enrolled in Medicare PECOS and is a graduate of University Of New Mexico School Of Medicine (2022).

NPPES Registry Identity

NPI1437759172
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameFIONA THUY THI CHIUCredential: MD
Location Address2021 BATTLECREEK DR UNIT AFort Collins, CO 80528-5120
Mailing Address2021 Battlecreek Dr Unit AFort Collins, CO 80528-5120
Phone(970) 818-5725
Sole ProprietorNo
Medical School CMSUniversity Of New Mexico School Of MedicineGraduated 2022
Enumeration DateOctober 30, 2020
Last NPPES UpdateJanuary 29, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 29, 2026
✔ NPI 1437759172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CO · DR.0074797
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2021 BATTLECREEK DR UNIT A, Fort Collins, CO 80528
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Other Names 1

Former Name (1)Fiona Thuy Thi Nguyen

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Fiona Thuy Thi Chiu 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 ID4981084225
PECOS Enrollment IDI20250605002537
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80528 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

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

DR. LYNDIE RAY WILKINS PARKER D.O.
Internal Medicine
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 556-1603
DILAAWAR J. MISTRY M.D.
Internal Medicine
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (883) 992-2742
KYLE RICHARD HIGBEE MD
Internal Medicine
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 818-5725
DILAAWAR J. MISTRY, M.D., PLLC
Clinic/Center (Medical Specialty)
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (720) 770-0259
DR. REBECCA RAIN JACKSON DO
Family Medicine (Geriatric Medicine)
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 568-5810
CASEY EMIGH MD
Physical Medicine & Rehabilitation
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 682-3516
COLORADO IN MOTION LLC
Physical Therapist
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 221-1201
NORTHERN COLORADO HOSPITALISTS PROFESSIONAL LLC
Hospitalist
2021 BATTLECREEK DR UNIT A
FORT COLLINS, CO 80528
Larimer County (970) 488-1666

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 Fiona Thuy Chiu's NPI number?

The NPI number for Fiona Thuy Chiu is 1437759172. It was assigned to this individual provider in the NPPES registry on October 30, 2020. The provider is also known as Fiona Thuy Thi Nguyen.

Where is Fiona Thuy Chiu located?

Fiona Thuy Chiu practices at 2021 Battlecreek Dr Unit A, Fort Collins, CO 80528. The listed phone number is (970) 818-5725.

What is Fiona Thuy Chiu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Fiona Thuy Chiu enrolled in Medicare?

Yes. Fiona Thuy Chiu 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.

When was this NPI record last updated?

The NPPES record for Fiona Thuy Chiu was last updated on January 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.