Lloyd M. Flatt, M.D.
Internal Medicine Physician · Marseilles, IL
Lloyd M. Flatt, M.D. is an internal medicine physician with a practice address in Marseilles, Illinois, and NPI 1295713766, issued on Jan 5, 2006. Check the license (Illinois 036089865, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Lloyd M. Flatt
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036089865 IL
Self-reported in NPPES; status is on the state search - Practice location
- 580 Sycamore St, Marseilles, IL 61341
- Phone
- (815) 795-2122
- Enumerated
- Jan 5, 2006
- Record last updated
- May 7, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (815) 795-3507
- Medicaid IDs
- 036089865-3 IL
036089865-2 IL - Entity
- Type 1 · individual
Also registered at 580 Sycamore St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ian Best, M.D.Pediatrics Physician1659359248
- Dawn Harris, LCSWClinical Social Worker1093324865
Verify Lloyd M. Flatt 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 036089865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1 internal medicine physician records list a practice address in Marseilles
They are 1 of the 25 NPPES records with a practice address in Marseilles, and 7,238 internal medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other internal medicine physician records in Illinois
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- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is Lloyd M. Flatt, M.D.'s NPI number?
Lloyd M. Flatt, M.D.'s National Provider Identifier (NPI) is 1295713766, issued on Jan 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lloyd M. Flatt, M.D. located?
The NPPES record lists a practice address at 580 Sycamore St, Marseilles, IL, 61341. Phone: (815) 795-2122. Providers update this record themselves, so call before visiting.
How can I verify Lloyd M. Flatt, M.D.'s license?
NPPES lists Illinois license number 036089865, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.