Keith Charles Knapp, M.D.
Family Medicine Physician · Chicago, IL
Keith Charles Knapp, M.D. is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1104817329, issued on Nov 4, 2005. Check the license (Illinois 036-062820, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Keith Charles Knapp
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-062820 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3303 S Halsted St, Chicago, IL 60608
- Phone
- (773) 890-0800
- Enumerated
- Nov 4, 2005
- Record last updated
- Oct 2, 2025
- Fax
- (773) 890-5430
- Medicare enrollment
- Enrolled (PECOS I20090818000192); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1980
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 3303 S Halsted St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Arnstein, D.D.S.General Practice Dentistry1689633497
- Brian Chiaramonte, DPMPodiatrist1972618635
- Pamela Franklin, MDInternal Medicine Physician1700938420
- John Knapp, RPHPharmacist1861442253
- Ryan Knapp, PHARMDPharmacist1164907390
- Jenniffel Ramirez, M.A.Professional Counselor1285948232
Verify Keith Charles Knapp 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 036-062820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% more Medicare Part D claims than the average family medicine physician in 2024
7,071 Medicare Part D claims for 345 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 99 claims were for opioids.
Most prescribed
- Amlodipine Besylate589 claims
- Atorvastatin Calcium394 claims
- Metoprolol Succinate324 claims
- Metformin Hcl257 claims
- Rosuvastatin Calcium221 claims
- Losartan Potassium160 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: $24.02
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Advocate Health And Hospitals CorporationTinley Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois.
All 1,593 in Chicago → All 6,215 in Illinois → Every provider in Chicago →
Other family medicine physician records in Illinois
- Jon Aagaard, MDWheaton, IL1750496923
- Napoleon Abando, MDWoodstock, IL1003972753
- Nikka Abaricia, MDChicago, IL1790366342
- Mohemmed AbbasChicago, IL1609612522
- Muhammad AbbasAlton, IL1588341556
- Syed AbbasWest Dundee, IL1972733103
- Stefanie AbbottMaywood, IL1861137457
- Roann Abdeladl, MDEvanston, IL1437087103
- Ahmed Abdelkader, MDChicago, IL1659104230
- Guy Abderholden, MDAntioch, IL1902899792
Common questions
What is Keith Charles Knapp, M.D.'s NPI number?
Keith Charles Knapp, M.D.'s National Provider Identifier (NPI) is 1104817329, issued on Nov 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Keith Charles Knapp, M.D. located?
The NPPES record lists a practice address at 3303 S Halsted St, Chicago, IL, 60608. Phone: (773) 890-0800. Providers update this record themselves, so call before visiting.
How can I verify Keith Charles Knapp, M.D.'s license?
NPPES lists Illinois license number 036-062820, 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 Keith Charles Knapp, M.D. prescribe under Medicare Part D?
In 2024, Keith Charles Knapp, M.D. had 7,071 Medicare Part D claims for 345 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.