Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CHRISTOPHER MICHAEL NGUYEN DO
NPI 1649833237
Internal Medicine - Gastroenterology in Chesterfield, MO

Q: What is Christopher Nguyen's NPI number?

The NPI number for Christopher Nguyen is 1649833237. It was assigned to this individual provider in the NPPES registry on April 18, 2019.

Q: What is Christopher Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since April 18, 2019PECOS Enrolled

74.96/100

CMS Quality Rating

17298 N OUTER 40 RD STE 200, CHESTERFIELD, MO 63005(314) 529-4900 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 6, 2026, Jul 28, 2026, Jun 19, 2024 and 2 more (5 updates tracked since 2019).

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About Christopher Michael Nguyen Do NPPES

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

CHRISTOPHER MICHAEL NGUYEN DO (NPI 1649833237) is an individual gastroenterology provider in Chesterfield, Missouri, licensed in Missouri (2023019628) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital - St Louis, and is a graduate of University Of North Texas Hsc, College Of Osteopathic Med (2019).

NPPES Registry Identity

NPI1649833237

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameCHRISTOPHER MICHAEL NGUYENCredential: DO

Location Address17298 N OUTER 40 RD STE 200Chesterfield, MO 63005-1456

Mailing Address17298 N Outer 40 Rd Ste 200Chesterfield, MO 63005-1456 · (314) 529-4900

Phone(314) 529-4900

Sole ProprietorNo

Medical School CMSUniversity Of North Texas Hsc, College Of Osteopathic MedGraduated 2019

Enumeration DateApril 18, 2019

Last NPPES UpdateAugust 6, 20265 updates tracked since enumeration

NPPES CertifiedAugust 6, 2026

✔ NPI 1649833237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in MO · 2023019628

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License T6979 (TX)

17298 N OUTER 40 RD STE 200, Chesterfield, MO 63005

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.Insurance ›

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

Christopher Michael Nguyen Do 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 ID9133455900

PECOS Enrollment IDI20250207001463

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.

Hospital Affiliations CMS Care Compare 2

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

Ssm Health St Mary's Hospital - St Louis

Acute Care Hospitals · Richmond Heights, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260091

Location6420 Clayton RdRichmond Heights, MO 63117 · St. Louis County

Emergency services Birthing friendly

Ssm Health Saint Louis University Hospital

Acute Care Hospitals · Saint Louis, MO

1/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number260105

Location3635 Vista AveSaint Louis, MO 63110 · St. Louis City County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63005 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

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.96/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

73.77

Promoting Interoperability

Improvement Activities

Cost

47.75

Other Providers at the Same Location NPPES 12

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

CHRISTI HUGUET CRNA

Nurse Anesthetist, Certified Registered