NPPES file of Aug 9, 2026

Allison Maas

Psychiatric/Mental Health Nurse Practitioner · Sterling, IL

Allison Maas is a psychiatric/mental health nurse practitioner with a practice address in Sterling, Illinois, and NPI 1518777689, issued on Jan 10, 2025. Check the license (Illinois 209033254, 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
1518777689
Name
Allison Maas
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
209033254 IL
Self-reported in NPPES; status is on the state search
Practice location
100 E Lefevre RD, Sterling, IL 61081
Phone
(815) 625-0400
Enumerated
Jan 10, 2025
Record last updated
Jan 9, 2026
Medicare enrollment
Enrolled (PECOS I20251103000022); 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 psychiatric/mental health nurse practitioner records → All 1,530 in Illinois → Look up another NPI →

Also registered at 100 E Lefevre RD

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

  1. Desiree Laurel Burke, NPNurse Practitioner1104542372
  2. Wendy Burke, PTPhysical Therapist1033454244
  3. Ashlea Canady, M.D.Surgery Physician1730443193
  4. Phong Dang, M.D.Family Medicine Physician1447394465
  5. Kelly DiehlPhysical Therapist1235494055
  6. Courtney Duffy, APRN, CNMAdvanced Practice Midwife1083189823

Verify Allison Maas 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 209033254    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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One hospital affiliation

  1. Cgh Medical CenterSterling, IL · Acute Care Hospitals1 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Allison Maas among 1,530 psychiatric/mental health nurse practitioner records in Illinois

Allison Maas 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 2025, is newer than 77% of them.

  • NPI issued2025 · 77% of these records are older, 8% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2023 · median 2021 among the 917 with a school on file
  • Record last updated2026 · 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).

4 psychiatric/mental health nurse practitioner records list a practice address in Sterling

They are 4 of the 366 NPPES records with a practice address in Sterling, and 1,530 psychiatric/mental health nurse practitioner records in Illinois.

All 1,530 in Illinois → Every provider in Sterling → Psychiatric/Mental Health Nurse Practitioner nationwide →

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

  1. Jenna HarrisSterling, IL 610811508736661
  2. Susan Lathe, NPSterling, IL 610811649845280
  3. Samantha Petty, PMHNPSterling, IL 610811174248405
  4. Michelle Blackmer, APRNRock Falls, IL 610711871923920
  5. Samantha Baney, APRNRockford, IL 611031679128730
  6. Jamie Brewer, APRN-CSRockford, IL 611041386110708
  7. Cassandra Euell, PMHNP-BC, MSN, R.N.Rockford, IL 611041053673194
  8. Judith Heinschel, PHD APRNRockford, IL 611041639246242

Common questions

What is Allison Maas's NPI number?

Allison Maas's National Provider Identifier (NPI) is 1518777689, issued on Jan 10, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Allison Maas located?

The NPPES record lists a practice address at 100 E Lefevre RD, Sterling, IL, 61081. Phone: (815) 625-0400. Providers update this record themselves, so call before visiting.

How can I verify Allison Maas's license?

NPPES lists Illinois license number 209033254, 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.