Update this page – If you believe information in your NPPES record is inaccurate, or if you wish to update or deactivate your NPI, you can do so directly with CMS.
Individual
DR. SENG M LEONG
Active
Individual
DR. SENG M LEONG
Active
Sole proprietor
Yes
Provider details
NPI number
Gender
Man
Credential
MD
Taxonomy
Speciality
Code
Description
License number
State
207R00000X
Internal Medicine Physician
Primary
036-055809
IL
Other
Other identifiers
Code
Description
Identifier
Issuer
State
05
—
03655809
—
IL
01
—
110209671
RAILROAD MEDICARE
IL
01
—
CH2241
RAIL ROAD MEDICARE GROUP
IL
01
—
L96137
MEDICARE ID
IL
Enumeration date
09/15/2006
Last updated
03/31/2025
About Stedi
Stedi is the only programmable healthcare clearinghouse. You can use Stedi's APIs to process eligibility checks, claims, remits, and more.
Sign up