DR. WAN IN L KOO D.O.
NPI 1871554865
Family Medicine in O Fallon, MO

Active since March 29, 2006PECOS EnrolledAccepts Medicare Assignment
1101 HIGHWAY K, O FALLON, MO 63366(636) 379-8138(636) 669-2401 Get Directions Write a Review

NPPES record last updated: October 23, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Wan In L Koo D.o. NPPES

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

DR. WAN IN L KOO D.O. (NPI 1871554865) is an individual family medicine provider in O Fallon, Missouri, licensed in Missouri (2002009359) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (1998).

NPPES Registry Identity

NPI1871554865
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. WAN IN L KOOCredential: D.O.
Location Address1101 HIGHWAY KO Fallon, MO 63366-8431
Mailing AddressPo Box 955534Saint Louis, MO 63195-5534
Fax(636) 669-2401
Sole ProprietorNo
Medical School CMSAt Still University Of Health Sciences, College Of Osteo Med, KirksvilleGraduated 1998
Enumeration DateMarch 29, 2006
Last NPPES UpdateOctober 23, 2020
NPPES CertifiedOctober 23, 2020
NPI 1871554865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in MO · 2002009359
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1101 HIGHWAY K, O Fallon, MO 63366

Other Identifiers 1

Medicaid206011504MO

Accepted 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

Dr. Wan In L Koo D.o. 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 ID4385778000
PECOS Enrollment IDI20100817001215
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.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
117 services78 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
47 services33 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
42 services42 patients

Hospital Affiliations CMS Care Compare 3

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

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260005
Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County
Emergency services

Ssm St Joseph Hospital West

Acute Care Hospitals · Lake Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260200
Location100 Medical PlazaLake Saint Louis, MO 63367 · St. Charles County
Emergency services Birthing friendly

Progress West Hospital

Acute Care Hospitals · O Fallon, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260219
Location2 Progress Point PkwyO Fallon, MO 63368 · St. Charles County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63366 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
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.

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.

Physician Assistant
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366
Physical Therapist
1101 HIGHWAY K
O FALLON, MO 63366
Nurse Practitioner
1101 HIGHWAY K
O FALLON, MO 63366
Obstetrics & Gynecology
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366
Nurse Practitioner (Family)
1101 HIGHWAY K
O FALLON, MO 63366
Family Medicine
1101 HIGHWAY K
O FALLON, MO 63366

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 Wan In Koo's NPI number?

The NPI number for Wan In Koo is 1871554865. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is Wan In Koo located?

Wan In Koo practices at 1101 Highway K, O Fallon, MO 63366. The listed phone number is (636) 379-8138.

What is Wan In Koo's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Wan In Koo enrolled in Medicare?

Yes. Wan In Koo 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.

What insurance does Wan In Koo accept?

Health plans from Anthem Blue Cross and Blue Shield and Oscar Insurance Company list Wan In Koo 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 Wan In Koo affiliated with any hospitals?

According to CMS data, Wan In Koo is affiliated with Ssm St Joseph Health Center, Ssm St Joseph Hospital West and Progress West Hospital.

When was this NPI record last updated?

The NPPES record for Wan In Koo was last updated on October 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.