1. Home
  2. Directory
  3. Illinois
  4. Lake Forest
  5. Physician Assistant
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. RILEY IRENE SYKES PA-C
NPI 1538733647
Physician Assistant in Lake Forest, IL

Active since May 14, 2021PECOS EnrolledAccepts Medicare Assignment
94.1/100
CMS Quality Rating
1000 N WESTMORELAND RD FL B3, LAKE FOREST, IL 60045(847) 535-8500(847) 535-8499 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 11, 2026, Mar 13, 2022, May 14, 2021 (3 updates tracked since 2021).

About Ms. Riley Irene Sykes Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. RILEY IRENE SYKES PA-C (NPI 1538733647) is an individual physician assistant in Lake Forest, Illinois, licensed in Illinois (085008588) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1538733647
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMS. RILEY IRENE SYKESCredential: PA-C
Location Address1000 N WESTMORELAND RD FL B3Lake Forest, IL 60045-1658
Mailing Address1000 N Westmoreland Rd Fl B3Lake Forest, IL 60045-1658 · (847) 535-8500 · Fax (847) 535-8499
Phone(847) 535-8500
Fax(847) 535-8499
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMay 14, 2021
Last NPPES UpdateSeptember 11, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1538733647 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in IL · 085008588
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Also ListedOrthopaedic Surgery · Foot and Ankle SurgeryTaxonomy 207XX0004X · License 085.008588 (IL)
1000 N WESTMORELAND RD FL B3, Lake Forest, IL 60045
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Riley Irene Sykes Pa-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID42617078
PECOS Enrollment IDI20210917002303
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140116
Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County
Emergency services Birthing friendly

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140130
Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County
Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60045 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.1/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.59
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NORTHWESTERN MEDICAL FACULTY FOUNDATION
Durable Medical Equipment & Medical Supplies
1000 N WESTMORELAND RD FL B3
LAKE FOREST, IL 60045
Lake County (847) 535-8029

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Riley Sykes's NPI number?

The NPI number for Riley Sykes is 1538733647. It was assigned to this individual provider in the NPPES registry on May 14, 2021.

Where is Riley Sykes located?

Riley Sykes practices at 1000 N Westmoreland Rd Fl B3, Lake Forest, IL 60045. The listed phone number is (847) 535-8500.

What is Riley Sykes's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Riley Sykes enrolled in Medicare?

Yes. Riley Sykes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Riley Sykes affiliated with any hospitals?

According to CMS data, Riley Sykes is affiliated with Northwestern Medicine Mchenry, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Riley Sykes was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.