DR. THOMAS ADAM MESSER M.D.
NPI 1205085255
Surgery in Chicago, IL

Q: What is Thomas Messer's NPI number?

The NPI number for Thomas Messer is 1205085255. It was assigned to this individual provider in the NPPES registry on September 15, 2008.

Q: What is Thomas Messer's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Thomas Messer was last updated on April 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 September 15, 2008PECOS EnrolledAccepts Medicare Assignment

84.57/100

CMS Quality Rating

1901 W HARRISON ST, DIVISION OF BURNS, ROOM 3229, CHICAGO, IL 60612(312) 864-2744(312) 864-9169 Get Directions Write a Review

NPPES record last updated: April 27, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 27, 2021, Jun 26, 2020 (2 updates tracked since 2020).

On this page

About Dr. Thomas Adam Messer M.d. NPPES

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

DR. THOMAS ADAM MESSER M.D. (NPI 1205085255) is an individual surgery provider in Chicago, Illinois, licensed in Illinois (036-116125) and active in the NPI registry since September 2008. He is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Rush Medical College Of Rush University (2002).

NPPES Registry Identity

NPI1205085255

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameDR. THOMAS ADAM MESSERCredential: M.D.

Location Address1901 W HARRISON ST, DIVISION OF BURNS, ROOM 3229Chicago, IL 60612-3714

Mailing Address1901 W Polk St, Room 1307Chicago, IL 60612 · (312) 864-2744 · Fax (312) 864-9169

Phone(312) 864-2744

Fax(312) 864-9169

Sole ProprietorNo

Medical School CMSRush Medical College Of Rush UniversityGraduated 2002

Enumeration DateSeptember 15, 2008

Last NPPES UpdateApril 27, 20212 updates tracked since enumeration

NPPES CertifiedApril 27, 2021

✔ NPI 1205085255 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in IL · 036-116125

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.

Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 036-116125 (IL)

1901 W HARRISON ST, Chicago, IL 60612

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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. Thomas Adam Messer 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 ID2365622859

PECOS Enrollment IDI20110216000403

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 Reassignment

Medicare enrollment records show Thomas Messer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cook County

Same address

Multi-Specialty

1901 W HARRISON ST
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
1,047 clinicians in this Medicare group

NPI 1245350040 (312) 864-4649

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

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.

37 services17 patients

Hospital Affiliations CMS Care Compare

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

John H Stroger Jr Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number140124

Location1901 W Harrison StChicago, 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

$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.

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.

84.57/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

60.25

Promoting Interoperability

100

Improvement Activities

Cost

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.

JOHANNA WEFES-POTTER

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (847) 843-2000

ARON BERHANU GUDETTA MD

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

DR. LIGAYA VILLAFRANCA MARASIGAN M.D.

Obstetrics & Gynecology (Gynecology)

1901 W HARRISON ST
CHICAG, IL 60612

Cook County (312) 864-5901

TIN TIN THOMAS M.D.

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

COOK COUNTY

Pharmacy (Clinic Pharmacy)

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6189

HELEN ELIZABETH STRAUS MD

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-0060

MR. GLEN DERRICK TRAMMELL PA-C

Physician Assistant

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 869-7488

JOHN H STROGER, JR. HOSPITAL OF COOK COUNTY

General Acute Care Hospital

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 319-2085

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 Thomas Messer's NPI number?

The NPI number for Thomas Messer is 1205085255. It was assigned to this individual provider in the NPPES registry on September 15, 2008.

Where is Thomas Messer located?

Thomas Messer practices at 1901 W Harrison St Division Of Burns, Room 3229, Chicago, IL 60612. The listed phone number is (312) 864-2744.

What is Thomas Messer's specialty?

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

Is Thomas Messer enrolled in Medicare?

Yes. Thomas Messer 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 organization bills Medicare for Thomas Messer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Messer reassigns Medicare benefits to Cook County (Chicago, IL). The 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 Thomas Messer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Thomas Messer affiliated with any hospitals?

According to CMS data, Thomas Messer is affiliated with John H Stroger Jr Hospital.

When was this NPI record last updated?

The NPPES record for Thomas Messer was last updated on April 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.