Oksana Chien, APRN, CNP
Nurse Practitioner · Chicago, IL
Oksana Chien, APRN, CNP is a nurse practitioner with a practice address in Chicago, Illinois, and NPI 1740846112, issued on May 11, 2019. Check the license (Illinois 209019070, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oksana Chien
- Credential
- APRN, CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 209019070 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 N Saint Clair St Ste 19-100, Chicago, IL 60611
- Phone
- (312) 664-3278
- Enumerated
- May 11, 2019
- Record last updated
- Oct 10, 2024
- Fax
- (312) 695-5774
- Medicare enrollment
- Enrolled (PECOS I20190530001232); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 675 N Saint Clair St Ste 19-100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Oksana Chien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209019070Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average nurse practitioner in 2024
38 Medicare Part D claims for 14 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
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 2 group practices
- Northwestern Medical Faculty FoundationChicago, IL
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oksana Chien among 4,892 nurse practitioner records in Illinois
Oksana Chien, APRN, CNP is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 54% of them.
- NPI issued2019 · 54% of these records are older, 39% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2018 among the 3,389 with a school on file
- Record last updated2024 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
952 nurse practitioner records list a practice address in Chicago
They are 952 of the 63,379 NPPES records with a practice address in Chicago, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Chicago → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Sarah Anderson, NPChicago, IL 606111043243355
- Larry Boehlke, NPChicago, IL 606111972575231
- Joanne Cullina, MSN, APNChicago, IL 606111619904885
- Florence Denby, RN, CNP, APNChicago, IL 606111598773103
- Rebecca DukeChicago, IL 606111932204286
- Sylvia Duraski, CNP, APNChicago, IL 606111417965039
- Barbara Guido, APN-CNPChicago, IL 606111780784611
- Susanna Miranda, DNP, APRN, AGNP-CChicago, IL 606111831118512
Common questions
What is Oksana Chien, APRN, CNP's NPI number?
Oksana Chien, APRN, CNP's National Provider Identifier (NPI) is 1740846112, issued on May 11, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Oksana Chien, APRN, CNP located?
The NPPES record lists a practice address at 675 N Saint Clair St Ste 19-100, Chicago, IL, 60611. Phone: (312) 664-3278. Providers update this record themselves, so call before visiting.
How can I verify Oksana Chien, APRN, CNP's license?
NPPES lists Illinois license number 209019070, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Oksana Chien, APRN, CNP prescribe under Medicare Part D?
In 2024, Oksana Chien, APRN, CNP had 38 Medicare Part D claims for 14 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.