Patrick John Gallagher, M.D.
Internal Medicine Physician · Chicago, IL
Patrick John Gallagher, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1669735650, issued on Jun 24, 2012. Check the license (Illinois 125-061987, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Patrick John Gallagher
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125-061987 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1900 W Polk St, Chicago, IL 60612
- Phone
- (312) 864-0060
- Enumerated
- Jun 24, 2012
- Record last updated
- Jun 24, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151119000403); may accept Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 1900 W Polk St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Patrick John Gallagher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 125-061987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,440 Medicare Part D claims for 187 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 90 claims were for opioids.
Most prescribed
- Atorvastatin Calcium142 claims
- Levothyroxine Sodium118 claims
- Amlodipine Besylate102 claims
- Azithromycin51 claims
- Zolpidem Tartrate50 claims
- Eliquis49 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Patrick John Gallagher among 7,238 internal medicine physician records in Illinois
Patrick John Gallagher, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 55% of them.
- NPI issued2012 · 55% of these records are older, 43% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2015 · median 2003 among the 3,580 with a school on file
- Record last updated2012 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Keith Boyd, M.D.Chicago, IL 606121174591978
- Lewis Coulson, M.D.Chicago, IL 606121619944931
- Henry Danko, M.D.Chicago, IL 606121780659524
- Denis Evans, M.D.Chicago, IL 606121952385841
- Tabassum Faruqi, M.D.Chicago, IL 606121013968536
- David Goldberg, MDChicago, IL 606121275588444
- Ionut Ilie, M.D.Chicago, IL 606121619926383
- Padma Kudaravalli, M.D.Chicago, IL 606121427004514
Common questions
What is Patrick John Gallagher, M.D.'s NPI number?
Patrick John Gallagher, M.D.'s National Provider Identifier (NPI) is 1669735650, issued on Jun 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Patrick John Gallagher, M.D. located?
The NPPES record lists a practice address at 1900 W Polk St, Chicago, IL, 60612. Phone: (312) 864-0060. Providers update this record themselves, so call before visiting.
How can I verify Patrick John Gallagher, M.D.'s license?
NPPES lists Illinois license number 125-061987, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Patrick John Gallagher, M.D. prescribe under Medicare Part D?
In 2024, Patrick John Gallagher, M.D. had 2,440 Medicare Part D claims for 187 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.