John W. Sage, MD
Family Medicine Physician · Mount Prospect, IL
John W. Sage, MD is a family medicine physician with a practice address in Mount Prospect, Illinois, and NPI 1972585636, issued on Nov 17, 2005. Check the license (Illinois 036051893, 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
- John W. Sage
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036051893 IL
Self-reported in NPPES; status is on the state search - Practice location
- 431 Lakeview CT, Mount Prospect, IL 60056
- Phone
- (847) 296-3040
- Enumerated
- Nov 17, 2005
- Record last updated
- Feb 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (847) 296-5546
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 431 Lakeview CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison Lechner, D.OFamily Medicine Physician1124000179
Verify John W. Sage 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 036051893Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John W. Sage among 6,215 family medicine physician records in Illinois
John W. Sage, MD is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileNo · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2011 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 family medicine physician records list a practice address in Mount Prospect
They are 21 of the 431 NPPES records with a practice address in Mount Prospect, and 6,215 family medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6,215 in Illinois → Every provider in Mount Prospect → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Japhlet Leomil Aranas, M.D.Mount Prospect, IL 600561992900609
- Salvador Cabanit, M.D.Mount Prospect, IL 600561639240435
- Richard Gallup, M.DMount Prospect, IL 600561962484923
- Julie Gilbertson, D.O.Mount Prospect, IL 600561811993470
- Raymond Gomez, M.D.Mount Prospect, IL 600561598784829
- Michelle Jurkonie, D.O.Mt Prospect, IL 600561073793964
- Joel Kragt, M.DMount Prospect, IL 600561891777850
- Alison Lechner, D.OMount Prospect, IL 600561124000179
Common questions
What is John W. Sage, MD's NPI number?
John W. Sage, MD's National Provider Identifier (NPI) is 1972585636, issued on Nov 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John W. Sage, MD located?
The NPPES record lists a practice address at 431 Lakeview CT, Mount Prospect, IL, 60056. Phone: (847) 296-3040. Providers update this record themselves, so call before visiting.
How can I verify John W. Sage, MD's license?
NPPES lists Illinois license number 036051893, 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.