Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Wan In L Koo, DO

Individual provider Family Medicine Physician · NPI 1871554865

Dr. Wan In L Koo, DO is a Family Practice in O Fallon, Missouri. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1998, 28 years ago. Practices with SSM Medical Group Inc, a 560-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
28
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
MO
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1101 Highway K
O Fallon, MO 63366-8431
Phone: (636) 379-8138
Fax: (636) 669-2401
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 2002009359 (MO)

Record details

NPI number1871554865
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 29, 2006
Last updated in NPPESOctober 23, 2020
Certification dateOctober 23, 2020
Mailing addressPo Box 955534, Saint Louis, MO 63195-5534

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1998 (28 years in practice)
Group practice Ssm Medical Group Inc — 560 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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