NPPES file of Aug 9, 2026

Grant Erich Berquist

Acute Care Nurse Practitioner · Oak Lawn, IL

Grant Erich Berquist is an acute care nurse practitioner with a practice address in Oak Lawn, Illinois, and NPI 1083311393, issued on Feb 8, 2023. Check the license (Illinois 209.026753, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1083311393
Name
Grant Erich Berquist
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
209.026753 IL
Self-reported in NPPES; status is on the state search
Practice location
4440 W 95TH St, Oak Lawn, IL 60453
Phone
(708) 684-8000
Enumerated
Feb 8, 2023
Record last updated
Nov 12, 2024
Medicare enrollment
Enrolled (PECOS I20230413002609); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 2022
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 acute care nurse practitioner records → All 639 in Illinois → Look up another NPI →

Also registered at 4440 W 95TH St

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

  1. Nadia Abdessalam, FNP-BCFamily Nurse Practitioner1356888283
  2. Akram Abdoue, M.D.Anesthesiology Physician1992752489
  3. Ahmad Abdulla, MDEmergency Medicine Physician1467202556
  4. Joseph Abraham, CRNACertified Registered Nurse Anesthetist1831653401
  5. Katherine Absalon, MOT, OTR/LOccupational Therapist1457753436
  6. Tassneem Abu-Rezeq, DNP, APRN, CPNP-ACPediatric Nurse Practitioner1831904663

Verify Grant Erich Berquist 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 209.026753    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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Bills Medicare through one group practice

  1. Advocate Health And Hospitals CorporationOak Lawn, IL

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

Grant Erich Berquist among 639 acute care nurse practitioner records in Illinois

Grant Erich Berquist is one of 639 acute care nurse practitioner records with a practice address in Illinois. 79% 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 77% of them.

  • NPI issued2023 · 77% of these records are older, 16% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2022 · median 2017 among the 434 with a school on file
  • Record last updated2024 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Acute Care Nurse Practitioner providers in Illinois

There are 639 acute care nurse practitioner records in Illinois.

All 639 in Illinois → Every provider in Oak Lawn → Acute Care Nurse Practitioner nationwide →

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Megan BaroOak Lawn, IL 604531811587686
  2. Alison Bartnicki, AGACNP-BCOak Lawn, IL 604531366862005
  3. Joanne Brown, APN, ACNP-BCOak Lawn, IL 604531750545505
  4. Laura Coyle, RN, MSN, NP-BCOak Lawn, IL 604531881864213
  5. Kristen Dudzik, ANPOak Lawn, IL 604531831646991
  6. Kelly Keating, AGACNP-BCOak Lawn, IL 604531346708971
  7. Stavroula Melegos, ACNPOak Lawn, IL 604531639448707
  8. Marissa Newtoff, M.S.N., ACNP-BCOak Lawn, IL 604531740519552

Common questions

What is Grant Erich Berquist's NPI number?

Grant Erich Berquist's National Provider Identifier (NPI) is 1083311393, issued on Feb 8, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Grant Erich Berquist located?

The NPPES record lists a practice address at 4440 W 95TH St, Oak Lawn, IL, 60453. Phone: (708) 684-8000. Providers update this record themselves, so call before visiting.

How can I verify Grant Erich Berquist's license?

NPPES lists Illinois license number 209.026753, 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. Medicare files from data.cms.gov. 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.