NPPES file of Aug 9, 2026

Samantha O'Brien, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner · Chicago, IL

Samantha O'Brien, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Chicago, Illinois, and NPI 1336848035, issued on Mar 1, 2023. Check the license (Illinois 209026845, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336848035
Name
Samantha O'Brien
Credential
PMHNP-BC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
209026845 IL
Self-reported in NPPES; status is on the state search
Practice location
1202 W Monroe St FL 1, Chicago, IL 60607
Phone
(630) 517-2934
Enumerated
Mar 1, 2023
Record last updated
Aug 16, 2023
Medicare enrollment
Enrolled (PECOS I20230420000514); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Samantha O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 209026845
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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97% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

25 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Samantha O'Brien25
  2. Specialty average906

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.

Industry payments in 2024: $146.07

7 payments; by number, the most common kind was food and beverage; the largest payer was Alkermes, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Samantha O'Brien$146.07
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Rockford Psychiatric Medical Services SCChicago, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Samantha O'Brien among 1,530 psychiatric/mental health nurse practitioner records in Illinois

Samantha O'Brien, PMHNP-BC is one of 1,530 psychiatric/mental health nurse practitioner records with a practice address in Illinois. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 56% of them.

  • NPI issued2023 · 56% of these records are older, 33% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2022 · median 2021 among the 917 with a school on file
  • Record last updated2023 · 17% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in Illinois

There are 1,530 psychiatric/mental health nurse practitioner records in Illinois.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Emmanuel Annang, APRNChicago, IL 606071336742568
  2. Oluwakemi Aregbesola, APRNChicago, IL 606071568065514
  3. Samuel Assam, PChicago, IL 606071881323905
  4. Deborah Bump, PMHNP-BCChicago, IL 606071326385824
  5. Erin Holden, APRN, PMHNP-BCChicago, IL 606071184320327
  6. Yuliya Ihlitskaya, PMHNP-BCChicago, IL 606071558819664
  7. Deanna JacksonChicago, IL 606071548055239
  8. Angela Lechowicz, PMHNPChicago, IL 606071760236152

Common questions

What is Samantha O'Brien, PMHNP-BC's NPI number?

Samantha O'Brien, PMHNP-BC's National Provider Identifier (NPI) is 1336848035, issued on Mar 1, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Samantha O'Brien, PMHNP-BC located?

The NPPES record lists a practice address at 1202 W Monroe St FL 1, Chicago, IL, 60607. Phone: (630) 517-2934. Providers update this record themselves, so call before visiting.

How can I verify Samantha O'Brien, PMHNP-BC's license?

NPPES lists Illinois license number 209026845, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Samantha O'Brien, PMHNP-BC prescribe under Medicare Part D?

In 2024, Samantha O'Brien, PMHNP-BC had 25 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.