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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK TOYAMA M.D.
NPI 1821085358
Surgery in Chicago, IL

Active since September 30, 2005PECOS Enrolled
676 N SAINT CLAIR ST, SUITE 1525, CHICAGO, IL 60611(312) 255-1451(312) 266-0478 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mark Toyama M.d. NPPES

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

MARK TOYAMA M.D. (NPI 1821085358) is an individual surgery provider in Chicago, Illinois and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821085358
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameMARK TOYAMACredential: M.D.
Location Address676 N SAINT CLAIR ST, SUITE 1525Chicago, IL 60611-2927
Mailing AddressPo Box 388320Chicago, IL 60638-8320 · (773) 767-8283 · Fax (773) 767-8320
Phone(312) 255-1451
Fax(312) 266-0478
Sole ProprietorNo
Enumeration DateSeptember 30, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1821085358 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
676 N SAINT CLAIR ST, Chicago, IL 60611
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Other Identifiers 1

Other01621690IL · Blue Shield

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Toyama M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
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.

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 Mark Toyama's NPI number?

The NPI number for Mark Toyama is 1821085358. It was assigned to this individual provider in the NPPES registry on September 30, 2005.

Where is Mark Toyama located?

Mark Toyama practices at 676 N Saint Clair St Suite 1525, Chicago, IL 60611. The listed phone number is (312) 255-1451.

What is Mark Toyama's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Mark Toyama enrolled in Medicare?

Yes. Mark Toyama is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Toyama was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.