Dr. Brian Thomas Layden, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 18
- Part D claims, 2024
- 278
- Publications
- 121
- MIPS score, 2024
- 93
- Practice address
- 1740 West Taylor St Suite 1400, Chicago, IL 60612
- Practice phone
- Call (312) 996-3900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Layden's professional email, personal email and mobile number
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Dr. Brian Thomas Layden is an endocrinologist in Chicago, Illinois
Dr. Layden practices at University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System.
Dr. Layden's NPI, 1841474913, was assigned on December 24, 2007. Dr. Layden graduated from Illinois Medical College in 2005. Dr. Layden holds Illinois license 036.120870.
- NPI
- 1841474913NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456483049
- NPI enumeration date
- December 24, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 996-3900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Thomas Layden practices at University of Illinois Hospital in Chicago, Illinois
Dr. Layden's primary practice is University of Illinois Hospital, at 1740 West Taylor St Suite 1400, Chicago, IL 60612 in Cook County. The practice phone is (312) 996-3900.
- University of Illinois Hospital1740 West Taylor St Suite 1400, Chicago, IL 60612 · Cook CountyPhone(312) 996-3900
Source: Dmand AI Affiliation Data
Dr. Brian Thomas Layden is affiliated with 2 sites of care and 2 medical groups
Dr. Layden's primary practice is University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Layden to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian Thomas Layden's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Layden practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Illinois Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Thomas Layden is one of 358 endocrinologists in Illinois
Endocrinology, diabetes and metabolism is Dr. Layden's primary specialty in the NPI Registry, under taxonomy code 207RE0101X. Dr. Layden is licensed in Illinois.
Specialties and state licenses
- Endocrinology, diabetes and metabolism, IllinoisPrimary
Endocrinologists near Dr. Layden
Counts of endocrinologists 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. Brian Thomas Layden billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Layden across 1 procedure code in 2024, all of them office visits, for 18 Medicare patients. Medicare paid $1,560 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Layden's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 252024: 2212%
Dr. Layden compared with the Illinois median for endocrinologists, 2024
- Dr. Layden
- Illinois median
- Medicare services
- 22vs 73697% below
- Medicare patients
- 18vs 28894% below
- Part D claims
- 160vs 1,28088% below
Medians across 359 endocrinologists in Illinois with Dmand AI profiles that report each measure.
Dr. Layden'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Layden and other endocrinologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Thomas Layden treated 18 Medicare patients in 2024, average age 72
CMS counts 18 Medicare patients who saw Dr. Layden in 2024. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 2.05, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Layden's median patient age at 69, with 61% women.
Chronic conditions among Dr. Layden's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Layden's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women61%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Thomas Layden wrote 278 Medicare Part D claims in 2024
In 2024, Dr. Layden wrote 278 Medicare Part D claims for 29 patients. 41% of them were for generic drugs. CMS names the drug for 160 of them, across 8 drugs with 11 or more claims each, at $102,302 in total drug cost. In 2023, CMS named 118 claims across 6 drugs.
Dr. Layden's Part D claims by kind of drug, 2024
- Generic113 claims41%
- Brand-name127 claims46%
- Other38 claims14%
Dr. Layden's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1182024: 16036%
Drugs named by CMS: 8 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Brian Thomas Layden scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Layden for performance year 2024, reported as part of a group. Dr. Layden accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Layden's MIPS scores, performance year 2024
- 93of 100Final score
- 73.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Brian Thomas Layden has 121 publications on record
Dmand AI links 121 papers to Dr. Layden, published from 2010 to 2025. 2024 was the busiest year, with 19. The most frequent topics are Gastrointestinal Microbiome, Mice, Inbred C57BL and Receptors, G-Protein-Coupled. Dr. Layden has published most often in Sci Rep. Dr. Layden's most frequent co-authors are Joseph Louis Zapater, MD, PhD, Yuval Eisenberg, MD and Sirimon Reutrakul, MD.
Dr. Layden's papers by year, 2016 to 2025
Topics Dr. Layden writes about most
- Gastrointestinal Microbiome
- Mice, Inbred C57BL
- Receptors, G-Protein-Coupled
- Fatty Acids, Volatile
- Glucose
- Diabetes Mellitus, Type 2
- Obesity
- Hexokinase
Dr. Layden's most frequent co-authors
- Joseph Louis Zapater, MD, PhD11 shared papers
- Yuval Eisenberg, MD10 shared papers
- Sirimon Reutrakul, MD8 shared papers
Recent publications by Dr. Layden
Am J Physiol Gastrointest Liver Physiol
See who Dr. Layden researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Layden works with, so you can find a warm path to the right endocrinologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Brian Thomas Layden received $34,037 in industry payments from 2016 to 2025
CMS Open Payments shows 47 general payments to Dr. Layden from 11 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 55% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $20,242.
General payments to Dr. Layden by program year, 2016 to 2025
General payments to Dr. Layden by kind, 2016 to 2025
- Speaker and faculty fees$18,71055%
- Consulting fees$12,30136%
- Travel and lodging$1,5585%
- Food and beverage$1,4694%
Companies that paid Dr. Layden 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. Brian Thomas Layden graduated from Illinois Medical College
Dr. Layden graduated from Illinois Medical College in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian Thomas Layden'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Brian Thomas Layden
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brian Thomas Layden's NPI number?
Dr. Brian Thomas Layden's NPI number is 1841474913. It was assigned on December 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Thomas Layden?
Dr. Brian Thomas Layden is an endocrinologist in Chicago, Illinois. The primary specialty in the NPI Registry is Endocrinology, Diabetes & Metabolism Physician (taxonomy code 207RE0101X).
Where does Dr. Brian Thomas Layden practice?
Dr. Layden practices at 1740 West Taylor St Suite 1400, Chicago, IL 60612. Dr. Layden's primary practice is University of Illinois Hospital in Chicago, Illinois, part of University of Illinois System. Dmand AI also links Dr. Layden to 1 group practice or clinic and 1 medical group.
What is Dr. Brian Thomas Layden's office phone number?
The practice phone on file for Dr. Layden is (312) 996-3900.
What is Dr. Brian Thomas Layden's medical license number?
Dr. Layden holds Illinois license 036.120870.
Which hospitals is Dr. Brian Thomas Layden affiliated with?
Dr. Layden practices at University of Illinois Hospital in Chicago, Illinois.
What medical group is Dr. Brian Thomas Layden part of?
Dr. Layden is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Layden to 1 more medical group.
Does Dr. Brian Thomas Layden accept Medicare?
Yes. CMS data shows Dr. Layden billed Medicare for 22 services in 2024, and Dr. Layden accepts Medicare assignment.
What is Dr. Brian Thomas Layden's MIPS score?
Dr. Layden's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Dr. Brian Thomas Layden see?
CMS counts 18 Medicare patients who saw Dr. Layden in 2024, with an average age of 72.
Show 7 more questionsShow fewer questions
What services does Dr. Brian Thomas Layden bill to Medicare?
In 2024, Dr. Layden's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Brian Thomas Layden go to medical school?
Dr. Layden graduated from Illinois Medical College in 2005.
What drugs does Dr. Brian Thomas Layden prescribe most?
In 2024 Medicare Part D data, Dr. Layden's most prescribed drugs by claims were Levothyroxine Sodium, Trulicity and Teriparatide.
Has Dr. Brian Thomas Layden received payments from drug or device companies?
CMS Open Payments shows $34,037 in general payments to Dr. Layden from 11 companies from 2016 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Brian Thomas Layden been practicing?
Dr. Layden graduated from medical school in 2005, 21 years ago.
Does Dr. Brian Thomas Layden do research?
Dmand AI links 121 publications to Dr. Layden, published from 2010 to 2025.
Who does Dr. Brian Thomas Layden publish with?
Dr. Layden's most frequent co-authors are Joseph Louis Zapater, MD, PhD (11 shared papers), Yuval Eisenberg, MD (10 shared papers) and Sirimon Reutrakul, MD (8 shared papers).
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