Gretchen Kemner
Psychiatric/Mental Health Nurse Practitioner · Chicago, IL
Gretchen Kemner is a psychiatric/mental health nurse practitioner with a practice address in Chicago, Illinois, and NPI 1598234726, issued on Nov 16, 2018. Check the license (Illinois 209.018351, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gretchen Kemner
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 209.018351 IL
Self-reported in NPPES; status is on the state search - Practice location
- 734 W 47TH St, Chicago, IL 60609
- Phone
- (773) 388-1600
- Enumerated
- Nov 16, 2018
- Record last updated
- Nov 16, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (773) 388-1602
- Medicare enrollment
- Enrolled (PECOS I20181206000018); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 1,530 in Illinois → Look up another NPI →
Also registered at 734 W 47TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raj Chablani, M.D.Psychiatry Physician1770894198
- Hannah Lamar, LCSWClinical Social Worker1225495484
- Valerie Matthiesen, NPAdult Health Nurse Practitioner1366629172
- Susan Niezgoda, APN,CNS,PMHNPPsychiatric/Mental Health Nurse Practitioner1952491110
- Regina Shasha, APNPsychiatric/Mental Health Nurse Practitioner1508993031
- Matthew Zemburski, PMHNP-BCPsychiatric/Mental Health Registered Nurse1629319009
Verify Gretchen Kemner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.018351Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,311 Medicare Part D claims for 64 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Trazodone Hcl97 claims
- Risperidone86 claims
- Quetiapine Fumarate85 claims
- Invega Sustenna83 claims
- Clozapine77 claims
- Sertraline Hcl75 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.
Industry payments in 2024: $658.46
30 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. 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.
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
- Howard Brown Health CenterChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gretchen Kemner among 1,530 psychiatric/mental health nurse practitioner records in Illinois
Gretchen Kemner 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 2018, is newer than 27% of them.
- NPI issued2018 · 27% of these records are older, 69% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2018 · median 2021 among the 917 with a school on file
- Record last updated2018 · 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.
All 1,530 in Illinois → Every provider in Chicago → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Susan Niezgoda, APN,CNS,PMHNPChicago, IL 606091952491110
- Regina Shasha, APNChicago, IL 606091508993031
- Ryan Anselmo, PMHNPChicago, IL 606101487428355
- Allegra ConnorsChicago, IL 606081295231397
- Sara Flanagan, APNChicago, IL 606081336475565
- Crystal Goods, APRN, PMHNP-BCChicago, IL 606101730759614
- Cynthia Jacinthe, APN, PMHNP-BC, CNMChicago, IL 606081114193042
- Umeko Jones, N.P.Chicago, IL 606081013310382
Common questions
What is Gretchen Kemner's NPI number?
Gretchen Kemner's National Provider Identifier (NPI) is 1598234726, issued on Nov 16, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen Kemner located?
The NPPES record lists a practice address at 734 W 47TH St, Chicago, IL, 60609. Phone: (773) 388-1600. Providers update this record themselves, so call before visiting.
How can I verify Gretchen Kemner's license?
NPPES lists Illinois license number 209.018351, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Gretchen Kemner prescribe under Medicare Part D?
In 2024, Gretchen Kemner had 1,311 Medicare Part D claims for 64 beneficiaries; 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.