JOHN ERNZEN MD
NPI 1346615663
Psychiatry & Neurology - Psychiatry in Chicago, IL

Q: What is John Ernzen's NPI number?

The NPI number for John Ernzen is 1346615663. It was assigned to this individual provider in the NPPES registry on December 11, 2015.

Q: What is John Ernzen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for John Ernzen was last updated on May 27, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.

Active since December 11, 2015PECOS EnrolledAccepts Medicare Assignment

225 E CHICAGO AVE, CHICAGO, IL 60611(312) 227-4000 Get Directions Write a Review

NPPES record last updated: May 27, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 27, 2022, Jan 24, 2022, Dec 6, 2019 and 2 more (5 updates tracked since 2015).

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About John Ernzen Md NPPES

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

JOHN ERNZEN MD (NPI 1346615663) is an individual psychiatry provider in Chicago, Illinois, licensed in Illinois (036157705) and active in the NPI registry since December 2015. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Northwestern University Feinberg Medical School (2019).

NPPES Registry Identity

NPI1346615663

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameJOHN ERNZENCredential: MD

Location Address225 E CHICAGO AVEChicago, IL 60611-2991

Mailing AddressAnn & Robert H. Lurie Children's Hospital Of Chicago, 225 E. Chicago AveChicago, IL 60611

Phone(312) 227-4000

Sole ProprietorNo

Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2019

Enumeration DateDecember 11, 2015

Last NPPES UpdateMay 27, 20225 updates tracked since enumeration

NPPES CertifiedMay 12, 2022

✔ NPI 1346615663 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in IL · 036157705

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

225 E CHICAGO AVE, Chicago, IL 60611

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Secondary Practice Locations 3

Location 11740 W Taylor StChicago, IL 60612-7232 · Phone (866) 600-2273

Location 2240 E Huron St, Suite 1-200Chicago, IL 60611-2909 · Phone (312) 503-7975

Location 32650 Ridge Ave., Department of PsychiatryEvanston, IL 60201-1718 · Phone (847) 570-2540 · Fax (847) 570-2939

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

John Ernzen 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 ID1759714454

PECOS Enrollment IDI20211230000573

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 2

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

84 services57 patients

Psychiatric diagnostic evaluation with medical services 90792

A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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.

BESSEY ELIZABETH JOSE GEEVARGHESE DO

Pediatrics