Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Haley Jane Brewer, PA

Physician Assistant in Lake Barrington, IL · enumerated 2022 · practices at Regency Medical Center, P.C..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1154044964

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Registry record

Entity type Individual (Type 1)

Name Mrs. Haley Jane Brewer

Credential PA

Sex Female

Practice address Lake Barrington, IL, 60010

Phone (847) 726-0774

Fax (847) 277-1549

Enumeration date Sep 26, 2022

Last updated in NPPES Jan 10, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085.009231 (IL) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

Other identifiers

Identifier	Type	State	Issuer
MB7618789	Other	IL	DEA
085009231	Medicaid	IL	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Haley Brewer's NPI record?

Cross-check NPI 1154044964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154044964 active?

Yes, as of the latest NPPES snapshot, NPI 1154044964 is active (record last updated 2024-01-10).

Other providers at this practice address

Browse all →

Regency Medical Center, P.C. Family Medicine Physician · Lake Barrington, IL NPI 1972687481 Nader Aziz Family Medicine Physician · Lake Barrington, IL NPI 1396829727 Ankita Patel Family Medicine Physician · Lake Barrington, IL NPI 1528287620 Mary Cotey Family Nurse Practitioner · Lake Barrington, IL NPI 1851708622 Vivian Shin Physician Assistant · Lake Barrington, IL NPI 1134763840 Stephanie Tyree Nurse Practitioner · Lake Barrington, IL NPI 1447926126

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-10.