Katleen Tiongson, APN
Nurse Practitioner · Bolingbrook, IL
Katleen Tiongson, APN is a nurse practitioner with a practice address in Bolingbrook, Illinois, and NPI 1538804364, issued on May 5, 2022. Check the license (Illinois 209025188, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katleen Tiongson
- Credential
- APN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 209025188 IL
Self-reported in NPPES; status is on the state search - Practice location
- 396 Remington Blvd Ste 140, Bolingbrook, IL 60440
- Phone
- (630) 495-9356
- Enumerated
- May 5, 2022
- Record last updated
- May 5, 2022
- Medicare enrollment
- Enrolled (PECOS I20220608002370); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 396 Remington Blvd Ste 140
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katleen Tiongson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209025188Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average nurse practitioner in 2024
420 Medicare Part D claims for 91 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 109 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen63 claims
- Warfarin Sodium36 claims
- Alprazolam19 claims
- Tramadol Hcl17 claims
- Morphine Sulfate Er16 claims
- Levothyroxine Sodium14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Value Based Long Term Care H PCChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nurse Practitioner providers in Illinois
There are 4,892 nurse practitioner records in Illinois.
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Common questions
What is Katleen Tiongson, APN's NPI number?
Katleen Tiongson, APN's National Provider Identifier (NPI) is 1538804364, issued on May 5, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Katleen Tiongson, APN located?
The NPPES record lists a practice address at 396 Remington Blvd Ste 140, Bolingbrook, IL, 60440. Phone: (630) 495-9356. Providers update this record themselves, so call before visiting.
How can I verify Katleen Tiongson, APN's license?
NPPES lists Illinois license number 209025188, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Katleen Tiongson, APN prescribe under Medicare Part D?
In 2024, Katleen Tiongson, APN had 420 Medicare Part D claims for 91 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.