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Dr. Michael A Less , MD

Anesthesiology โ€ข Elmhurst, IL

Active NPI 1689600611 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

155 E Brush Hill Rd
Elmhurst, IL 601265658

Call 3312211000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

155 E Brush Hill Rd

Elmhurst, IL 601265658

Telephone 3312211000
Organization at the Same NPPES Address or Phone
Elmhurst Memorial Hospital Facility NPI 1932141645

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: University Of Chicago. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1983

Medicare patients

251 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $21,393 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $16,960 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Open Payments general payments, program year 2023

All general payments: $100.24 across 4 records.

By nature of payment

  • Food and Beverage: $100.24 across 4 records.

Reporting-company totals

  • Medtronic, Inc.: $64.77 across 2 records.
  • Chiesi USA, Inc.: $35.47 across 2 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2023 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

43 years (graduated 1983)

CMS Doctors and Clinicians data list 1983 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Less has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Less as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Elmhurst and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 85% of clinicians listed under Anesthesiology in Elmhurst, IL (2024, 15 clinicians with data). Median for this group: 65. Middle half: 31 to 100.

Close to the middle for clinicians listed under Anesthesiology in Illinois (2024, 1,277 clinicians with data). Median for this group: 111. Middle half: 49 to 202.

Medicare-allowed amount

A higher Medicare-allowed amount than 90% of clinicians listed under Anesthesiology in Elmhurst, IL (2024, 15 clinicians with data). Median for this group: $8,877. Middle half: $2,967 to $16,356.

A higher Medicare-allowed amount than 65% of clinicians listed under Anesthesiology in Illinois (2024, 1,277 clinicians with data). Median for this group: $13,888. Middle half: $5,137 to $26,211.

Paid by Medicare

A higher Medicare payment amount than 90% of clinicians listed under Anesthesiology in Elmhurst, IL (2024, 15 clinicians with data). Median for this group: $7,073. Middle half: $2,439 to $13,128.

A higher Medicare payment amount than 65% of clinicians listed under Anesthesiology in Illinois (2024, 1,277 clinicians with data). Median for this group: $11,048. Middle half: $4,093 to $21,014.

30 active clinicians are listed under Anesthesiology with a practice address in Elmhurst, IL (2,577 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Elmhurst

0% of these 30 clinicians have the CMS telehealth indicator.

70% of these 30 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2023
Disclosure Year:

Program year 2023 (payments made January 1 โ€“ December 31, 2023): fewer than 11 records totaling $100.24.

Manufacturer Payment Nature Product Type Amount ($)
Medtronic, Inc.
Food and Beverage
In-kind items and services
MCGRATH MAC General $39.81
Medtronic, Inc.
Food and Beverage
In-kind items and services
MCGRATH MAC General $24.96
Chiesi USA, Inc.
Food and Beverage
Cash or cash equivalent
KENGREAL General $18.53
Chiesi USA, Inc.
Food and Beverage
Cash or cash equivalent
CLEVIPREX General $16.94

Source: CMS Open Payments, program year 2023, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ€“2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2017โ€“2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
21 21 $959.64 $95.09
36620 Insertion of artery tube for blood sampling or infusion through skin
17 17 $486.53 $45.62
00790 Anesthesia for other procedure on upper abdomen
15 15 $3275.83 $363.25
00811 Anesthesia for other procedure on large bowel using an endoscope
15 15 $975.97 $101.36
00910 Anesthesia for other procedure on urinary system through urethra
14 14 $974.64 $110.22
01402 Anesthesia for procedure for total knee joint replacement
13 13 $2950.77 $233.98
01922 Anesthesia for x-ray or radiation therapy
12 11 $1270.00 $148.65
00670 Anesthesia for extensive surgery on spine
11 11 $4421.41 $480.25

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES IL 036070085

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ANESTHESIOLOGY

Medicare Enrollment ID

I20071108000608

Enrollment State Jurisdiction

IL

PECOS Control ID

2769374313

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

University Of Chicago

5841 S Maryland Ave, Chicago, IL 606371443

Phone: 8888240200

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

31 listed
Dr. Christian Bautista , MD

Anesthesiology - Pain Medicine

NPI 1669401113

Doctor of Medicine (M.D.)

Dr. Natalie Behnke , MD

Emergency Medicine

NPI 1730612797

Doctor of Medicine (M.D.)

NPI 1841226776

Doctor of Medicine (M.D.)

Darlene Bingham , CRNA

Nurse Anesthetist, Certified Registered

NPI 1861469579

Certified Registered Nurse Anesthetist

NPI 1144548330

Doctor of Medicine (M.D.)

NPI 1083185904

Doctor of Nursing Practice, Advanced Practice Registered Nurse, Family Nurse Practitioner (Board Certified)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

11 Historical Events
โœ…
NPI Profile Active May 12, 2017

NPI status registered as active in NPPES database

๐Ÿ“
Updated Practice Location May 12, 2017

Registered at 155 E BRUSH HILL RD, ELMHURST, IL 601265658 (Tel: 3312211000)

๐Ÿ“
Updated Business Mailing Address May 12, 2017

Registered at 255 W MICHIGAN AVE, JACKSON, MI 492012218 (Tel: 5177876440)

๐Ÿ‘ค
Provider Name / Credentials Updated May 12, 2017

Recorded as MICHAEL LESS, M.D

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) May 12, 2017

Anesthesiology (license number reported to NPPES: IL 036070085)

โœ…
NPI Profile Active October 10, 2007

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) October 10, 2007

Registered at 200 BERTEAU AVE, ELMHURST, IL 601262966 (Tel: 6308331400)

๐Ÿ“
Business Mailing Address (Initial Record) October 10, 2007

Registered at 255 W MICHIGAN AVE, JACKSON, MI 492012218 (Tel: 5177876440)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) October 10, 2007

Recorded as MICHAEL LESS, M.D

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) October 10, 2007

Anesthesiology

๐ŸŸข
Initial NPI Registration & Enumeration June 23, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1689600611
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 23, 2006
Last Update: May 12, 2017
Sole Proprietor: No

Other Anesthesiology Specialists in Elmhurst

All Anesthesiology Specialists in Elmhurst

Mailing Address

255 W Michigan Ave

Jackson, MI 492012218

Phone: 5177876440

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.