Alison Linn Sage, D.O.
Family Medicine Physician · Oak Park, IL
Alison Linn Sage, D.O. is a family medicine physician with a practice address in Oak Park, Illinois, and NPI 1427495241, issued on Jun 3, 2013. Check the license (Illinois 036139049, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Alison Linn Sage
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036139049 IL
Self-reported in NPPES; status is on the state search - Practice location
- 932 Lake St Ste 300, Oak Park, IL 60301
- Phone
- (331) 221-1700
- Enumerated
- Jun 3, 2013
- Record last updated
- Feb 9, 2026
- Fax
- (331) 221-2730
- Medicare enrollment
- Enrolled (PECOS I20160830003067); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2013
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 932 Lake St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alison Linn 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 036139049Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average family medicine physician in 2024
2,663 Medicare Part D claims for 244 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 81 claims were for opioids.
Most prescribed
- Atorvastatin Calcium184 claims
- Amlodipine Besylate151 claims
- Losartan Potassium124 claims
- Levothyroxine Sodium87 claims
- Rosuvastatin Calcium82 claims
- Hydrochlorothiazide80 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.
The MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alison Linn Sage among 6,215 family medicine physician records in Illinois
Alison Linn Sage, D.O. 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. Its NPI, issued in 2013, is newer than 64% of them.
- NPI issued2013 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2013 · median 2006 among the 3,714 with a school on file
- Record last updated2026 · 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).
86 family medicine physician records list a practice address in Oak Park
They are 86 of the 2,307 NPPES records with a practice address in Oak Park, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Oak Park → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Hung Duong, MDOak Park, IL 603011245257781
- Peter Grant, M.D.Oak Park, IL 603011306853858
- Nancy Gryniewicz, M.D.Oak Park, IL 603011558368043
- Stephen Humowiecki, MDOak Park, IL 603011477533560
- Mary Hutton, MDOak Park, IL 603011164415808
- Mary Kelly, D.O.Oak Park, IL 603011912087560
- Paul Kungl, MDOak Park, IL 603011831234749
- Michael Kyle, MDOak Park, IL 603011578556544
Common questions
What is Alison Linn Sage, D.O.'s NPI number?
Alison Linn Sage, D.O.'s National Provider Identifier (NPI) is 1427495241, issued on Jun 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Alison Linn Sage, D.O. located?
The NPPES record lists a practice address at 932 Lake St Ste 300, Oak Park, IL, 60301. Phone: (331) 221-1700. Providers update this record themselves, so call before visiting.
How can I verify Alison Linn Sage, D.O.'s license?
NPPES lists Illinois license number 036139049, 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 Alison Linn Sage, D.O. prescribe under Medicare Part D?
In 2024, Alison Linn Sage, D.O. had 2,663 Medicare Part D claims for 244 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Alison Linn Sage, D.O.'s MIPS final score?
The 2023 MIPS final score is 91.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.