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DR. ERIC RILEY PATTEN MD
NPI 1912643305
Hospitalist in Elmhurst, IL

Active since May 09, 2022PECOS EnrolledAccepts Medicare Assignment
155 E. BRUSH HILL RD., HOSPITAL MEDICINE, ELMHURST, IL 60126(331) 221-8952(331) 221-3782 Get Directions Write a Review

NPPES record last updated: August 10, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 10, 2026, Aug 7, 2025, May 9, 2022 (3 updates tracked since 2022).

About Dr. Eric Riley Patten Md NPPES

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

DR. ERIC RILEY PATTEN MD (NPI 1912643305) is an individual hospitalist provider in Elmhurst, Illinois, licensed in Illinois (036176454) and active in the NPI registry since May 2022. He is enrolled in Medicare PECOS, is affiliated with Swedish Hospital, and maintains a secondary practice location in Chillicothe.

NPPES Registry Identity

NPI1912643305
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. ERIC RILEY PATTENCredential: MD
Location Address155 E. BRUSH HILL RD., HOSPITAL MEDICINEElmhurst, IL 60126-5658
Mailing Address4461 State Route 159 Ste AChillicothe, OH 45601-6000 · (740) 779-4900 · Fax (740) 779-4909
Phone(331) 221-8952
Fax(331) 221-3782
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMay 9, 2022
Last NPPES UpdateAugust 10, 20263 updates tracked since enumeration
NPPES CertifiedAugust 10, 2026
✔ NPI 1912643305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in IL · 036176454
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License 036176454 (IL)
155 E. BRUSH HILL RD., Elmhurst, IL 60126
Open in Google Maps ↗

Secondary Practice Location 1

Location 14461 State Route 159 Ste AChillicothe, OH 45601-6000 · Phone (740) 779-4900 · Fax (740) 779-4909

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Eric Riley Patten Md 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 ID1456739051
PECOS Enrollment IDI20250819004882
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.

Medicare Billing Reassignment

Medicare enrollment records show Eric Patten reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Endeavor Health Medical Group
19 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 2

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

Swedish Hospital

Acute Care Hospitals · Chicago, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140114
Location5145 N California AveChicago, IL 60625 · Cook County
Emergency services Birthing friendly

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL
4/5 CMS rating
OwnershipProprietary
CMS Certification Number140200
Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60126 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

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

MR. VITALIY ALEXANDER VULYKH APN-CRNA
Nurse Anesthetist, Certified Registered
155 E. BRUSH HILL RD., DEPARTMENT OF ANESTHESIA
ELMHURST, IL 60126
Dupage County (331) 221-3521
MARGARET M, BIANCOFIORI CRNA
Nurse Anesthetist, Certified Registered
155 E. BRUSH HILL RD., DEPARTMENT OF ANESTHESIA
ELMHURST, IL 60126
Dupage County (331) 221-3521
DR. ANUJ KHETARPAL MD
Anesthesiology (Pain Medicine)
155 E. BRUSH HILL RD., DEPARTMENT OF ANESETHESIA
ELMHURST, IL 60126
Dupage County (331) 221-3521
JENNIFER QUAM MD
Anesthesiology
155 E. BRUSH HILL RD., DEPARTMENT OF ANESTHESIA
ELMHURST, IL 60126
Dupage County (331) 221-1000
HUSSAM A. SYED MD
Internal Medicine
155 E. BRUSH HILL RD., HOSPITAL MEDICINE
ELMHURST, IL 60126
Dupage County (331) 221-1174
KEVIN THENGUMTHARAYIL MATHEW DO
Radiology (Diagnostic Radiology)
155 E. BRUSH HILL RD., DEPARTMENT OF RADIOLOGY
ELMHURST, IL 60126
Dupage County (331) 221-5420

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 Eric Patten's NPI number?

The NPI number for Eric Patten is 1912643305. It was assigned to this individual provider in the NPPES registry on May 9, 2022.

Where is Eric Patten located?

Eric Patten practices at 155 E. Brush Hill Rd. Hospital Medicine, Elmhurst, IL 60126. The listed phone number is (331) 221-8952.

What is Eric Patten's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Eric Patten enrolled in Medicare?

Yes. Eric Patten 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.

Which organization bills Medicare for Eric Patten's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eric Patten reassigns Medicare benefits to Endeavor Health Medical Group (Evanston, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Eric Patten's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Eric Patten affiliated with any hospitals?

According to CMS data, Eric Patten is affiliated with Swedish Hospital and Elmhurst Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Eric Patten was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.