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DR. CHRISTOPHER THOMAS HOLBROOK M.D.
NPI 1831486281
Hospitalist in Chicago, IL

Active since July 06, 2011PECOS EnrolledAccepts Medicare Assignment
676 N SAINT CLAIR ST, CHICAGO, IL 60611(312) 503-8481 Get Directions Write a Review

NPPES record last updated: April 27, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Christopher Thomas Holbrook M.d. NPPES

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

DR. CHRISTOPHER THOMAS HOLBROOK M.D. (NPI 1831486281) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036141735) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS, is affiliated with Presence Saint Francis Hospital, and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2007).

NPPES Registry Identity

NPI1831486281
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. CHRISTOPHER THOMAS HOLBROOKCredential: M.D.
Location Address676 N SAINT CLAIR STChicago, IL 60611-2927
Mailing Address676 N Saint Clair StChicago, IL 60611-2927 · (312) 503-8481
Phone(312) 503-8481
Sole ProprietorYes
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2007
Enumeration DateJuly 6, 2011
Last NPPES UpdateApril 27, 2017
✔ NPI 1831486281 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 · 036141735
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 ListedSurgeryTaxonomy 208600000X · License 125054037 (IL)
676 N SAINT CLAIR ST, Chicago, IL 60611
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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. Christopher Thomas Holbrook 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 ID4688958069
PECOS Enrollment IDI20170302001752
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

5

Medicare enrollment records show Christopher Holbrook reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cook Physician Services, P.C.
9.6 mi
Internal Medicine
355 RIDGE AVE
Evanston, IL 60202
  • Reassigned Medicare billing, Illinois enrollment
  • 87 clinicians in this Medicare group
NPI 1487416376 (847) 316-4000
Chicago Physician Services, P.C.
12 mi
Internal Medicine
7435 W TALCOTT AVE
Chicago, IL 60631
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Chicago Physician Services PC
  • 79 clinicians in this Medicare group
NPI 1538921424 (773) 774-8000
Endeavor Health Medical Group
12 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
Prime Healthcare Illinois Medical Group LLC
16 mi
Multi-Specialty
2380 E DEMPSTER ST
Des Plaines, IL 60016
  • Reassigned Medicare billing, Illinois enrollment
  • 443 clinicians in this Medicare group
NPI 1023837689 (833) 291-0464
Freeport Memorial Hospital
107 mi
General Acute Care Hospital
1045 W STEPHENSON ST
Freeport, IL 61032
  • Reassigned Medicare billing, Illinois enrollment
  • 478 clinicians in this Medicare group
NPI 1447228788 (815) 599-6000

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.
398 services132 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.
102 services96 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.
97 services60 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.
76 services75 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
52 services50 patients

Hospital Affiliations CMS Care Compare 3

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

Presence Saint Francis Hospital

Acute Care Hospitals · Evanston, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140080
Location355 Ridge AveEvanston, IL 60202 · Cook County
Emergency services

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

Presence Saint Joseph Hospital - Chicago

Acute Care Hospitals · Chicago, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140224
Location2900 North Lake Shore DriveChicago, IL 60657 · 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.

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.

MS. LISA RAUBOLT
Social Worker (Clinical)
676 N SAINT CLAIR ST
CHICAGO, IL 60611
Cook County (312) 926-4512
JULIANNA L ROTH MD
Internal Medicine
676 N SAINT CLAIR ST, SUITE 2300
CHICAGO, IL 60611
Cook County (312) 926-6000
ANKIT BHARAT MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
676 N SAINT CLAIR ST, SUITE 650
CHICAGO, IL 60611
Cook County (312) 926-7628
JOAQUIN CARLOS BRIEVA MD
Dermatology
676 N SAINT CLAIR ST, SUITE 1600
CHICAGO, IL 60611
Cook County (312) 695-8106
JOHN M SHAW MD
Internal Medicine (Medical Oncology)
676 N SAINT CLAIR ST, STE 2140
CHICAGO, IL 60611
Cook County (312) 664-5400
MELVIN J GOLDSTEIN, M.D.,S.C.
Internal Medicine (Gastroenterology)
676 N SAINT CLAIR ST, SUITE 1525
CHICAGO, IL 60611
Cook County (312) 337-1556
DR. HOWARD M. AROF M.D.
Obstetrics & Gynecology
676 N SAINT CLAIR ST, #1880
CHICAGO, IL 60611
Cook County (312) 642-9844
DR. MARIA MATSANGOU M.D.
Internal Medicine (Hematology & Oncology)
676 N SAINT CLAIR ST, SUITE 850
CHICAGO, IL 60611
Cook County (312) 695-6182

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 Christopher Holbrook's NPI number?

The NPI number for Christopher Holbrook is 1831486281. It was assigned to this individual provider in the NPPES registry on July 6, 2011.

Where is Christopher Holbrook located?

Christopher Holbrook practices at 676 N Saint Clair St, Chicago, IL 60611. The listed phone number is (312) 503-8481.

What is Christopher Holbrook's specialty?

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

Is Christopher Holbrook enrolled in Medicare?

Yes. Christopher Holbrook 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 Christopher Holbrook's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Holbrook reassigns Medicare benefits to 5 organizations: Cook Physician Services, P.C. (Evanston, IL), Chicago Physician Services, P.C. (Chicago, IL), Endeavor Health Medical Group (Evanston, IL), Prime Healthcare Illinois Medical Group LLC (Des Plaines, IL) and Freeport Memorial Hospital (Freeport, 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 Christopher Holbrook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Christopher Holbrook affiliated with any hospitals?

According to CMS data, Christopher Holbrook is affiliated with Presence Saint Francis Hospital, Swedish Hospital and Presence Saint Joseph Hospital - Chicago.

When was this NPI record last updated?

The NPPES record for Christopher Holbrook was last updated on April 27, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.