NPPES file of Aug 9, 2026

Christopher Michael Flinn, M.D.

Internal Medicine Physician · Chicago, IL

Christopher Michael Flinn, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1063668341, issued on Aug 18, 2008. Check the license (Illinois 036127920, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063668341
Name
Christopher Michael Flinn
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
036127920 IL
Self-reported in NPPES; status is on the state search
Practice location
3860 W Ogden Ave, Chicago, IL 60623
Phone
(872) 588-3000
Enumerated
Aug 18, 2008
Record last updated
Nov 16, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(872) 588-3021
Medicare enrollment
Enrolled (PECOS I20111103000711); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 2007
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →

Also registered at 3860 W Ogden Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeneson Abraham, P.A.Medical Physician Assistant1013975218
  2. Luisa AdameCounselor1255968160
  3. Grace Ahn, DDSDentist1518166743
  4. Similolu Akintorin, MDFamily Medicine Physician1033790407
  5. Edward Akinyemi, MDFamily Medicine Physician1609525104
  6. Lars Armainsson, MDInternal Medicine Physician1336259514

Verify Christopher Michael Flinn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036127920    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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9% more Medicare Part D claims than the average internal medicine physician in 2024

3,453 Medicare Part D claims for 482 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 42 claims were for opioids.

  1. Christopher Flinn3,453
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium278 claims
  2. Amlodipine Besylate160 claims
  3. Losartan Potassium142 claims
  4. Levothyroxine Sodium109 claims
  5. Metoprolol Succinate108 claims
  6. Tamsulosin Hcl101 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.

Industry payments in 2024: $70.53

1 payment: food and beverage; the largest payer was Medtronic, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Christopher Flinn$70.53
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Christopher Michael Flinn among 7,238 internal medicine physician records in Illinois

Christopher Michael Flinn, 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 2008, is newer than 45% of them.

  • NPI issued2008 · 45% of these records are older, 51% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2007 · 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

  1. Lars Armainsson, MDChicago, IL 606231336259514
  2. Ravikiran Barigala, M.D.Chicago, IL 606231801805437
  3. Tyla CourtneyChicago, IL 606231841329489
  4. Chukwudozie Ezeokoli, MDChicago, IL 606231881838159
  5. Ryan Fabrizius, M.D.Chicago, IL 606231851683122
  6. Janice Huber, M.D.Chicago, IL 606231649474404
  7. Catherine Lin, M.D.Chicago, IL 606231659532877
  8. Pedro Lopez, MDChicago, IL 606231053395517

Common questions

What is Christopher Michael Flinn, M.D.'s NPI number?

Christopher Michael Flinn, M.D.'s National Provider Identifier (NPI) is 1063668341, issued on Aug 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Christopher Michael Flinn, M.D. located?

The NPPES record lists a practice address at 3860 W Ogden Ave, Chicago, IL, 60623. Phone: (872) 588-3000. Providers update this record themselves, so call before visiting.

How can I verify Christopher Michael Flinn, M.D.'s license?

NPPES lists Illinois license number 036127920, 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 Christopher Michael Flinn, M.D. prescribe under Medicare Part D?

In 2024, Christopher Michael Flinn, M.D. had 3,453 Medicare Part D claims for 482 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.