Lewis Blumenthal, MD
Obstetrics & Gynecology Physician · Chicago, IL
Lewis Blumenthal, MD is an obstetrics & gynecology physician with a practice address in Chicago, Illinois, and NPI 1750366209, issued on Dec 7, 2005. Check the license (Illinois 036059833, 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
- Lewis Blumenthal
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036059833 IL
Self-reported in NPPES; status is on the state search - Practice location
- 55 E Washington St, Chicago, IL 60602
- Phone
- (312) 263-5517
- Enumerated
- Dec 7, 2005
- Entity
- Type 1 · individual
Also registered at 55 E Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lewis Blumenthal 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 036059833Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Obstetrics & Gynecology Physician providers in Illinois
There are 1,983 obstetrics & gynecology physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
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Common questions
What is Lewis Blumenthal, MD's NPI number?
Lewis Blumenthal, MD's National Provider Identifier (NPI) is 1750366209, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lewis Blumenthal, MD located?
The NPPES record lists a practice address at 55 E Washington St, Chicago, IL, 60602. Phone: (312) 263-5517. Providers update this record themselves, so call before visiting.
How can I verify Lewis Blumenthal, MD's license?
NPPES lists Illinois license number 036059833, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.