Dr. Patrick John Gallagher, MD
- Medicare services, 2024
- 199
- Medicare patients, 2024
- 125
- Part D claims, 2024
- 2,440
- Hospital affiliations
- 4
- Industry payments
- $87
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Patrick John Gallagher is an internist in Chicago, Illinois
Dr. Gallagher practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Gallagher's NPI, 1669735650, was assigned on June 24, 2012. Dr. Gallagher graduated from Northwestern University Feinberg Medical School in 2015. Dr. Gallagher holds Illinois license 125-061987.
- NPI
- 1669735650NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739499203
- NPI enumeration date
- June 24, 2012
- NPI status
- Active
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Patrick John Gallagher practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Gallagher's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. Patrick John Gallagher is affiliated with 6 sites of care
Dr. Gallagher's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dr. Gallagher is also affiliated with Shirley Ryan AbilityLab. Dmand AI also links Dr. Gallagher to 2 more hospitals, 1 physician office and 1 skilled nursing facility, 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. Patrick John Gallagher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gallagher practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Patrick John Gallagher is one of 5,652 internists in Illinois
Internal medicine is Dr. Gallagher's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gallagher is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Gallagher
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 John Gallagher billed Medicare for 199 services in 2024
CMS data shows 199 Medicare services from Dr. Gallagher across 3 procedure codes in 2024, for 125 Medicare patients. Medicare paid $18,578 for them. Every service was in an office.
Dr. Gallagher's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1262024: 1303%
- Other services
- 2023: 1022024: 6932%
- Tests and treatments
- 2023: 242024: 0100%
Dr. Gallagher compared with the Illinois median for internists, 2024
- Dr. Gallagher
- Illinois median
- Medicare services
- 199vs 56665% below
- Medicare patients
- 125vs 20840% below
- Part D claims
- 1,812vs 2846.4 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Gallagher'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick John Gallagher treated 125 Medicare patients in 2024, average age 79
CMS counts 125 Medicare patients who saw Dr. Gallagher in 2024. The largest group is 75 to 84, with 50 patients. 50% of them have high blood pressure, and 45% have high cholesterol. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gallagher's median patient age at 78, with 51% women.
Dr. Gallagher's Medicare patients by age, 2024
Dr. Gallagher's Medicare patients by sex, 2024
- Women7056%
- Men5544%
Chronic conditions among Dr. Gallagher's Medicare patients, 2024
- High blood pressure50%
- High cholesterol45%
- Arthritis40%
- Cancer28%
- Ischemic heart disease26%
- Heart failure22%
- Atrial fibrillation21%
- Osteoporosis21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gallagher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women51%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick John Gallagher wrote 2,440 Medicare Part D claims in 2024
In 2024, Dr. Gallagher wrote 2,440 Medicare Part D claims for 187 patients. 82% of them were for generic drugs. CMS names the drug for 1,812 of them, across 68 drugs with 11 or more claims each, at $197,103 in total drug cost. In 2023, CMS named 1,617 claims across 59 drugs.
Dr. Gallagher's Part D claims by kind of drug, 2024
- Generic2,011 claims82%
- Brand-name415 claims17%
- Other14 claims1%
Dr. Gallagher'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. Gallagher's Part D claims, 2024
- Opioids4%90 of 2,440 claims
- Antibiotics6%140 of 2,440 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: 1,6172024: 1,81212%
Drugs named by CMS: 68 in 2024, 59 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 John Gallagher received $87 in industry payments from 2016 to 2023
CMS Open Payments shows 3 general payments to Dr. Gallagher from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $34.
General payments to Dr. Gallagher by program year, 2016 to 2023
Companies that paid Dr. Gallagher the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Patrick John Gallagher graduated from Northwestern University Feinberg Medical School
Dr. Gallagher graduated from Northwestern University Feinberg Medical School in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Patrick John Gallagher'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) |
| 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. Patrick John Gallagher
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 John Gallagher's NPI number?
Dr. Patrick John Gallagher's NPI number is 1669735650. It was assigned on June 24, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick John Gallagher?
Dr. Patrick John Gallagher is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Patrick John Gallagher practice?
Dr. Gallagher practices at 251 E Huron St, Chicago, IL 60611. Dr. Gallagher's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Gallagher to 2 hospitals, 1 physician office and 1 skilled nursing facility.
What is Dr. Patrick John Gallagher's office phone number?
The practice phone on file for Dr. Gallagher is (312) 926-2000.
What is Dr. Patrick John Gallagher's medical license number?
Dr. Gallagher holds Illinois license 125-061987.
Which hospitals is Dr. Patrick John Gallagher affiliated with?
Dr. Gallagher practices at Northwestern Memorial Hospital in Chicago, Illinois. Dr. Gallagher is also affiliated with Shirley Ryan AbilityLab. Dmand AI links Dr. Gallagher to 2 more hospitals.
Does Dr. Patrick John Gallagher accept Medicare?
Yes. CMS data shows Dr. Gallagher billed Medicare for 199 services in 2024.
How many Medicare patients does Dr. Patrick John Gallagher see?
CMS counts 125 Medicare patients who saw Dr. Gallagher in 2024, with an average age of 79.
What services does Dr. Patrick John Gallagher bill to Medicare?
In 2024, Dr. Gallagher's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Dr. Patrick John Gallagher go to medical school?
Dr. Gallagher graduated from Northwestern University Feinberg Medical School in 2015.
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What drugs does Dr. Patrick John Gallagher prescribe most?
In 2024 Medicare Part D data, Dr. Gallagher's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Patrick John Gallagher received payments from drug or device companies?
CMS Open Payments shows $87 in general payments to Dr. Gallagher from 3 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Patrick John Gallagher been practicing?
Dr. Gallagher graduated from medical school in 2015, 11 years ago.
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