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Registered Dietitian or Nutrition Professional

Jessica L. Barker

Sees patients in Crystal Lake, IL · Barrington, IL · Illinois

Summary

Jessica L. Barker is a dietitian at 650 Dakota St, Suite B, Crystal Lake, IL 60012. Phone: (847) 381-8161. Accepts Medicare assignment. NPI 1336730555. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Dietitian (Medicare lists Registered Dietitian or Nutrition Professional)
  • Address: 650 Dakota St, Suite B, Crystal Lake, IL 60012 · Directions (1 more location)
  • Phone: (847) 381‑8161
  • Medicare: Accepts Medicare assignment
  • Group practice: Advanced Surgical Care of Northern Illinois, Ltd
  • School: graduated 2007
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Jessica L. Barker, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jessica L. Barker accept Medicare assignment?
Yes. Medicare's clinician data says Jessica L. Barker accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Jessica L. Barker's NPI number?
1336730555. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Jessica L. Barker is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jessica L. Barker as a member of this group (CMS data updated October 2, 2026).

  • Advanced Surgical Care of Northern Illinois, Ltd9 clinicians in the group

Specialties

Find other clinicians: Registered Dietitian or Nutrition Professional, Illinois →

Other dietitians in Crystal Lake

Clinicians with the same Medicare primary specialty in Crystal Lake, IL — not a recommendation.

All dietitians in Crystal Lake →

Other clinicians in Advanced Surgical Care of Northern Illinois, Ltd

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

Graduation year2007
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1336730555
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians