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

Kelly Keh Lih Tan, MD

Individual provider Hospitalist Physician · NPI 1023299799

Kelly Keh Lih Tan, MD practises Internal Medicine in Long Grove, Illinois. Graduated from Rush Medical College of Rush University in 2005, 21 years ago. Practices with Best Practices Inpatient Care, Ltd, a 83-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
21
Trained at
Rush Medical College of Rush University
Licensed in
IL
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3880 Salem Lake Dr Ste F
Long Grove, IL 60047-5292
Phone: (847) 719-2220
Fax: (847) 719-2265
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 125049167 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 036119745 (IL)

Record details

NPI number1023299799
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 21, 2007
Last updated in NPPESMarch 7, 2023
Certification dateDecember 28, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 2005 (21 years in practice)
Group practice Best Practices Inpatient Care, Ltd. — 83 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients430
Services billed 1,069 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Best Practices Inpatient Care, Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 83 clinicians in the practice; 12 are shown here.

Other providers in Long Grove