NPPES file of Aug 9, 2026

Allison Garland Greven, LCSW

Clinical Social Worker · Chicago, IL

Allison Garland Greven, LCSW is a clinical social worker with a practice address in Chicago, Illinois, and NPI 1669126934, issued on Feb 7, 2022. Check the license (Illinois 149019597, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1669126934
Name
Allison Garland Greven
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
149019597 IL
Self-reported in NPPES; status is on the state search
Practice location
333 N Michigan Ave Ste 1900, Chicago, IL 60601
Phone
(312) 964-4614
Enumerated
Feb 7, 2022
Record last updated
Feb 7, 2022
Medicare enrollment
Enrolled (PECOS I20230329001226); accepts Medicare assignment
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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8 nearest clinical social worker records → All 13,637 in Illinois → Look up another NPI →

Also registered at 333 N Michigan Ave Ste 1900

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nicole AhlanderClinical Social Worker1043634405
  2. Svetlana BekPsychiatric/Mental Health Nurse Practitioner1639936131
  3. Kristen Botte, RDRegistered Dietitian1801147566
  4. Haley Bugumba, RDN, LDNRegistered Dietitian1740931138
  5. Alexis CanfieldSocial Worker1215785795
  6. Danielle Doucette, PSY.D.Clinical Psychologist1861824252

Verify Allison Garland Greven 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 149019597    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Allison Garland Greven among 13,637 clinical social worker records in Illinois

Allison Garland Greven, LCSW is one of 13,637 clinical social worker records with a practice address in Illinois. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2022, is newer than 75% of them.

  • NPI issued2022 · 75% of these records are older, 19% newer
  • In a Medicare fileNo · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2014 · median 2010 among the 2,895 with a school on file
  • Record last updated2022 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

4,368 clinical social worker records list a practice address in Chicago

They are 4,368 of the 63,379 NPPES records with a practice address in Chicago, and 13,637 clinical social worker records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 13,637 in Illinois → Every provider in Chicago → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Adrienne Ahlquist, LCSWChicago, IL 606011518040419
  2. Ann Brody, L.C.S.W.Chicago, IL 606011801928866
  3. Judith Chapman, LCSWChicago, IL 606011912047416
  4. Diane Dean, MSWChicago, IL 606011699838110
  5. Robert Feldman, LCSWChicago, IL 606011932134319
  6. Lana Friedman Daugherty, PHD LCSWChicago, IL 606011053463091
  7. Nina Helstein, MA PHDChicago, IL 606011235281213
  8. Robert Mardirossian, PH.D.Chicago, IL 606011568553907

Common questions

What is Allison Garland Greven, LCSW's NPI number?

Allison Garland Greven, LCSW's National Provider Identifier (NPI) is 1669126934, issued on Feb 7, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Allison Garland Greven, LCSW located?

The NPPES record lists a practice address at 333 N Michigan Ave Ste 1900, Chicago, IL, 60601. Phone: (312) 964-4614. Providers update this record themselves, so call before visiting.

How can I verify Allison Garland Greven, LCSW's license?

NPPES lists Illinois license number 149019597, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.