Dr. Patrick S. Lay, MD
- Medicare services, 2024
- 718
- Medicare patients, 2024
- 282
- Part D claims, 2024
- 6,267
- Industry payments
- $1,188
- Affiliated sites
- 2
- Practice address
- 6450 W Touhy Ave, Niles, IL 60714
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northshore Immediate Care Center - HOPD
Acute Care Hospital outpatient department · Niles, Illinois
Find Dr. Lay's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Patrick S. Lay is an internist in Niles, Illinois
Dr. Lay practices at Northshore Immediate Care Center - HOPD in Niles, Illinois.
Dr. Lay's NPI, 1639238405, was assigned on December 7, 2006. Dr. Lay holds Illinois license 036-092840.
- NPI
- 1639238405NPI Registry (opens in a new tab)
- NPI enumeration date
- December 7, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Patrick S. Lay practices at Northshore Immediate Care Center - HOPD in Niles, Illinois
Dr. Lay's primary practice is Northshore Immediate Care Center - HOPD, at 6450 W Touhy Ave, Niles, IL 60714.
- Northshore Immediate Care Center - HOPD6450 W Touhy Ave, Niles, IL 60714
Source: Dmand AI Affiliation Data
Dr. Patrick S. Lay is affiliated with 2 sites of care and 1 medical group
Dr. Lay's primary practice is Northshore Immediate Care Center - HOPD in Niles, Illinois. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Dr. Lay to 1 more group practice or clinic, named with a free account. Dr. Lay's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Patrick S. Lay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lay practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northshore Immediate Care Center - HOPD | 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. Patrick S. Lay is one of 5,652 internists in Illinois
Internal medicine is Dr. Lay's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lay is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Lay
Counts of internists 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. Patrick S. Lay billed Medicare for 718 services in 2024
CMS data shows 718 Medicare services from Dr. Lay across 8 procedure codes in 2024, for 282 Medicare patients. Medicare paid $58,919 for them. Every service was in an office.
Dr. Lay's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4492024: 4353%
- Other services
- 2023: 1892024: 25032%
- Tests and treatments
- 2023: 322024: 333%
Dr. Lay compared with the Illinois median for internists, 2024
- Dr. Lay
- Illinois median
- Medicare services
- 718vs 56627% above
- Medicare patients
- 282vs 20836% above
- Part D claims
- 5,662vs 28419.9 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Lay'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. Lay and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick S. Lay treated 282 Medicare patients in 2024, average age 77
CMS counts 282 Medicare patients who saw Dr. Lay in 2024. The largest group is 65 to 74, with 119 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 11% are also on Medicaid. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lay's median patient age at 64, with 29% women.
Dr. Lay's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lay's Medicare patients by sex, 2024
- Women9935%
- Men18365%
Chronic conditions among Dr. Lay's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis37%
- Diabetes27%
- Chronic kidney disease20%
- Ischemic heart disease20%
- Atrial fibrillation17%
- Heart failure14%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women29%
- Men70%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick S. Lay wrote 6,267 Medicare Part D claims in 2024
In 2024, Dr. Lay wrote 6,267 Medicare Part D claims for 619 patients. 90% of them were for generic drugs. CMS names the drug for 5,662 of them, across 89 drugs with 11 or more claims each, at $344,336 in total drug cost. In 2023, CMS named 5,391 claims across 83 drugs.
Dr. Lay's Part D claims by kind of drug, 2024
- Generic5,654 claims90%
- Brand-name564 claims9%
- Other49 claims1%
Dr. Lay'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.
Drug classes CMS tracks in Dr. Lay's Part D claims, 2024
- Opioids1%59 of 6,267 claims
- Antibiotics1%49 of 6,267 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,3912024: 5,6625%
Drugs named by CMS: 89 in 2024, 83 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
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Dr. Patrick S. Lay received $1,188 in industry payments from 2016 to 2019
CMS Open Payments shows 20 general payments to Dr. Lay from 3 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,045.
General payments to Dr. Lay by program year, 2016 to 2019
Companies that paid Dr. Lay the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Patrick S. Lay'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Patrick S. Lay
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. Patrick S. Lay's NPI number?
Dr. Patrick S. Lay's NPI number is 1639238405. It was assigned on December 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick S. Lay?
Dr. Patrick S. Lay is an internist in Niles, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Patrick S. Lay practice?
Dr. Lay practices at 6450 W Touhy Ave, Niles, IL 60714. Dr. Lay's primary practice is Northshore Immediate Care Center - HOPD in Niles, Illinois. Dmand AI also links Dr. Lay to 1 group practice or clinic.
What is Dr. Patrick S. Lay's medical license number?
Dr. Lay holds Illinois license 036-092840.
What medical group is Dr. Patrick S. Lay part of?
Dr. Lay is linked to Endeavor Health Medical Group.
Does Dr. Patrick S. Lay accept Medicare?
Yes. CMS data shows Dr. Lay billed Medicare for 718 services in 2024.
How many Medicare patients does Dr. Patrick S. Lay see?
CMS counts 282 Medicare patients who saw Dr. Lay in 2024, with an average age of 77.
What services does Dr. Patrick S. Lay bill to Medicare?
In 2024, Dr. Lay's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99215).
What drugs does Dr. Patrick S. Lay prescribe most?
In 2024 Medicare Part D data, Dr. Lay's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Patrick S. Lay received payments from drug or device companies?
CMS Open Payments shows $1,188 in general payments to Dr. Lay from 3 companies from 2016 to 2019. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Patrick S. Lay been practicing?
Dr. Lay graduated from medical school in 1977, 49 years ago.
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