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ELLIOTT BAKER
NPI 1518537307
Psychiatry & Neurology - Psychiatry in Chicago, IL

Active since June 25, 2021PECOS EnrolledAccepts Medicare Assignment
1620 W HARRISON ST, CHICAGO, IL 60612(312) 942-5000 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 14, 2026, Jun 25, 2021 (2 updates tracked since 2021).

About Elliott Baker NPPES

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

ELLIOTT BAKER (NPI 1518537307) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (036.174757) and active in the NPI registry since June 2021. He is enrolled in Medicare PECOS, is affiliated with Rush University Medical Center, and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1518537307
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameELLIOTT BAKER
Location Address1620 W HARRISON STChicago, IL 60612-3801
Mailing Address1725 W Harrison St Ste 755Chicago, IL 60612-3863 · (312) 563-2030
Phone(312) 942-5000
Sole ProprietorNo
Medical School CMSCreighton University School Of MedicineGraduated 2021
Enumeration DateJune 25, 2021
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1518537307 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in IL · 036.174757
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1620 W HARRISON ST, Chicago, IL 60612
Open in Google Maps ↗

Secondary Practice Location 1

Location 1800 Washington StBoston, MA 02111-1552 · Phone (617) 636-6033

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

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

Elliott Baker 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 ID749795276
PECOS Enrollment IDI20260814004775
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 Reassignments

2

Medicare enrollment records show Elliott Baker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rush Medical Group
Same address
Internal Medicine
1620 W HARRISON ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • 548 clinicians in this Medicare group
NPI 1467312850 (312) 942-5000
Rush University Medical Group
Same address
Internal Medicine
1620 W HARRISON ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • 2,169 clinicians in this Medicare group
NPI 1093819542 (312) 942-5000

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

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

Rush University Medical Center

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140119
Location1653 West Congress ParkwayChicago, IL 60612 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 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
$183.39 typical visit price
range $60.08 – $183.39
Typical copayment $45.84 (range $15.02 – $45.84)
Most-billed visit code 99205
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
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.

Other Providers at the Same Location NPPES 20

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

NICHOLAS RIGLER
Internal Medicine
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
KABEER RAJAN MASIH MD
Radiology (Vascular & Interventional Radiology)
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
MARGARET C SCHERMERHORN MD
Obstetrics & Gynecology
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
ANDREW MAX MELCHIORIS MD, MBA
Internal Medicine
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (314) 942-5000
NICOLE HALEY SULIMA DNP
Nurse Practitioner (Gerontology)
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
KRINA PATEL MD
Psychiatry & Neurology (Psychiatry)
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
LAYNE MITCHELL BESSA
Registered Nurse
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5000
COLETTE MITCHELL OT
Occupational Therapist
1620 W HARRISON ST
CHICAGO, IL 60612
Cook County (312) 942-5800

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 Elliott Baker's NPI number?

The NPI number for Elliott Baker is 1518537307. It was assigned to this individual provider in the NPPES registry on June 25, 2021.

Where is Elliott Baker located?

Elliott Baker practices at 1620 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 942-5000.

What is Elliott Baker's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Elliott Baker enrolled in Medicare?

Yes. Elliott Baker 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 organizations bill Medicare for Elliott Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elliott Baker reassigns Medicare benefits to 2 organizations: Rush Medical Group (Chicago, IL) and Rush University Medical Group (Chicago, IL). Each 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 Elliott Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elliott Baker accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Elliott Baker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Elliott Baker affiliated with any hospitals?

According to CMS data, Elliott Baker is affiliated with Rush University Medical Center.

When was this NPI record last updated?

The NPPES record for Elliott Baker was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.