Dr. Gregory W. Barrett, MD
- Medicare services, 2024
- 86
- Medicare patients, 2024
- 169
- Hospital affiliations
- 1
- Industry payments
- $840
- Medical group
- 1
- Practice address
- 2725 Technology Dr, Lombard, IL 60148
- Practice phone
- Call (630) 348-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Duly Surgery Center Lombard
Lombard, Illinois
Find Dr. Barrett's professional email, personal email and mobile number
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Dr. Gregory W. Barrett is an anesthesiologist in Lombard, Illinois
Dr. Barrett practices at Duly Surgery Center Lombard in Lombard, Illinois.
Dr. Barrett's NPI, 1841248069, was assigned on May 4, 2006. Dr. Barrett graduated from Ohio Medical University in 1998. Dr. Barrett holds Illinois license 036107389.
- NPI
- 1841248069NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133252398
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 348-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory W. Barrett practices at Duly Surgery Center Lombard in Lombard, Illinois
Dr. Barrett's primary practice is Duly Surgery Center Lombard, at 2725 Technology Dr, Lombard, IL 60148 in Dupage County. The practice phone is (630) 348-3300.
- Duly Surgery Center Lombard2725 Technology Dr, Lombard, IL 60148 · Dupage CountyPhone(630) 348-3300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory W. Barrett is affiliated with 2 sites of care and 1 medical group
Dr. Barrett's primary practice is Duly Surgery Center Lombard in Lombard, Illinois. Dr. Barrett is also affiliated with Edward Hospital. The medical group on file is DuPage Valley Anesthesiologists.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory W. Barrett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barrett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duly Surgery Center Lombard | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory W. Barrett is one of 1,887 anesthesiologists in Illinois
Anesthesiology is Dr. Barrett's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Barrett is licensed in Illinois.
Specialties and state licenses
- Anesthesiology, IllinoisPrimary
Anesthesiologists near Dr. Barrett
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory W. Barrett billed Medicare for 86 services in 2024
CMS data shows 86 Medicare services from Dr. Barrett across 6 procedure codes in 2024, for 169 Medicare patients. Medicare paid $8,589 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Barrett's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 502024: 7550%
- Surgery
- 2023: 02024: 11
Dr. Barrett compared with the Illinois median for anesthesiologists, 2024
- Dr. Barrett
- Illinois median
- Medicare services
- 86vs 915% below
- Medicare patients
- 169vs 1578% above
Medians across 1,742 anesthesiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Barrett's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Barrett?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barrett and other anesthesiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory W. Barrett treated 169 Medicare patients in 2024, average age 73
CMS counts 169 Medicare patients who saw Dr. Barrett in 2024. The largest group is 65 to 74, with 86 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Barrett's median patient age at 47, with 59% women.
Dr. Barrett's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Barrett's Medicare patients by sex, 2024
- Women10562%
- Men6438%
Chronic conditions among Dr. Barrett's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis47%
- Ischemic heart disease29%
- Anxiety28%
- Depression27%
- Mood disorders27%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barrett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Gregory W. Barrett takes part in Medicare
Dr. Barrett accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory W. Barrett received $840 in industry payments from 2016 to 2025
CMS Open Payments shows 22 general payments to Dr. Barrett from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Merck Sharp & Dohme Corporation paid the most, $464.
General payments to Dr. Barrett by program year, 2016 to 2025
General payments to Dr. Barrett by kind, 2016 to 2025
- Food and beverage$71986%
- Consulting fees$10012%
- Education$213%
Companies that paid Dr. Barrett the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory W. Barrett graduated from Ohio Medical University
Dr. Barrett graduated from Ohio Medical University in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory W. Barrett's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory W. Barrett
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What is Dr. Gregory W. Barrett's NPI number?
Dr. Gregory W. Barrett's NPI number is 1841248069. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory W. Barrett?
Dr. Gregory W. Barrett is an anesthesiologist in Lombard, Illinois. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gregory W. Barrett practice?
Dr. Barrett practices at 2725 Technology Dr, Lombard, IL 60148. Dr. Barrett's primary practice is Duly Surgery Center Lombard in Lombard, Illinois.
What is Dr. Gregory W. Barrett's office phone number?
The practice phone on file for Dr. Barrett is (630) 348-3300.
What is Dr. Gregory W. Barrett's medical license number?
Dr. Barrett holds Illinois license 036107389.
Which hospitals is Dr. Gregory W. Barrett affiliated with?
Dr. Barrett is affiliated with Edward Hospital.
What medical group is Dr. Gregory W. Barrett part of?
Dr. Barrett is linked to DuPage Valley Anesthesiologists.
Does Dr. Gregory W. Barrett accept Medicare?
Yes. CMS data shows Dr. Barrett billed Medicare for 86 services in 2024, and Dr. Barrett accepts Medicare assignment.
How many Medicare patients does Dr. Gregory W. Barrett see?
CMS counts 169 Medicare patients who saw Dr. Barrett in 2024, with an average age of 73.
What services does Dr. Gregory W. Barrett bill to Medicare?
In 2024, Dr. Barrett's most billed Medicare services were anesthesia (00811), anesthesia (00731) and anesthesia (00142).
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Where did Dr. Gregory W. Barrett go to medical school?
Dr. Barrett graduated from Ohio Medical University in 1998.
Has Dr. Gregory W. Barrett received payments from drug or device companies?
CMS Open Payments shows $840 in general payments to Dr. Barrett from 10 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Gregory W. Barrett been practicing?
Dr. Barrett graduated from medical school in 1998, 28 years ago.
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