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JEFFREY MERZ M.D.
NPI 1063862985
Hospitalist in Chicago, IL

Active since June 21, 2016PECOS EnrolledAccepts Medicare Assignment
94.1/100
CMS Quality Rating
251 E HURON ST STE 16-738, CHICAGO, IL 60611(312) 926-5924(312) 926-6134 Get Directions Write a Review

NPPES record last updated: August 6, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 6, 2020, Jun 21, 2016 (2 updates tracked since 2016).

About Jeffrey Merz M.d. NPPES

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

JEFFREY MERZ M.D. (NPI 1063862985) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036152033) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Delnor Community Hospital, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1063862985
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameJEFFREY MERZCredential: M.D.
Location Address251 E HURON ST STE 16-738Chicago, IL 60611-3055
Mailing Address251 E Huron St Ste 16-738Chicago, IL 60611-3055 · (312) 926-5924 · Fax (312) 926-6134
Phone(312) 926-5924
Fax(312) 926-6134
Sole ProprietorNo
Medical School CMSUniversity Of Louisville School Of MedicineGraduated 2016
Enumeration DateJune 21, 2016
Last NPPES UpdateAugust 6, 20202 updates tracked since enumeration
NPPES CertifiedAugust 6, 2020
✔ NPI 1063862985 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in IL · 036152033
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 125068509 (IL)
Also ListedPediatricsTaxonomy 208000000X · License 125068509 (IL)
251 E HURON ST STE 16-738, Chicago, IL 60611
Open in Google Maps ↗

Secondary Practice Location 1

Location 11653 W Congress PkwyChicago, IL 60612-3833 · Phone (312) 942-5000

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

Jeffrey Merz M.d. 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 ID1759673700
PECOS Enrollment IDI20200610003374
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 Jeffrey Merz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Central Dupage Physician Group
24 mi
Family Medicine
5777 DEPARTMENT
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 1,664 clinicians in this Medicare group
NPI 1033149844 (630) 933-3300
Northwestern Medical Faculty Foundation
34 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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

Areas of Expertise CMS Part B claims 5

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 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
484 services226 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
160 services155 patients
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.
95 services64 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
83 services81 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
19 services19 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 Delnor Community Hospital

Acute Care Hospitals · Geneva, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140211
Location300 Randall RdGeneva, IL 60134 · Kane County
Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page 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 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

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 20

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

AISHA T AMUDA
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DR. PETER SOOHOON PARK MD
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
RITIKA DHAWAN
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
MRS. MARGARET CANTARA SCHIFFHAUER
Physician Assistant
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
JACK CARTER PA-C
Physician Assistant
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DAVE U SONI MD
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DR. JUAN P ALBAN MD
Internal Medicine (Hematology & Oncology)
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
ELIZABETH A WALTERS PA-C
Physician Assistant (Medical)
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924

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 Jeffrey Merz's NPI number?

The NPI number for Jeffrey Merz is 1063862985. It was assigned to this individual provider in the NPPES registry on June 21, 2016.

Where is Jeffrey Merz located?

Jeffrey Merz practices at 251 E Huron St Ste 16-738, Chicago, IL 60611. The listed phone number is (312) 926-5924.

What is Jeffrey Merz's specialty?

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

Is Jeffrey Merz enrolled in Medicare?

Yes. Jeffrey Merz 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 Jeffrey Merz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Merz reassigns Medicare benefits to 2 organizations: Central Dupage Physician Group (Carol Stream, IL) and Northwestern Medical Faculty Foundation (Carol Stream, 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 Jeffrey Merz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Jeffrey Merz affiliated with any hospitals?

According to CMS data, Jeffrey Merz is affiliated with Northwestern Medicine Delnor Community Hospital, Northwestern Medicine Central Dupage Hospital and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Jeffrey Merz was last updated on August 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.