Aron Hall Feinberg, DO
Internal Medicine Physician · Northfield, IL
Aron Hall Feinberg, DO is an internal medicine physician with a practice address in Northfield, Illinois, and NPI 1902967169, issued on Dec 12, 2006. Check the license (Illinois 036-087314, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Aron Hall Feinberg
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-087314 IL
Self-reported in NPPES; status is on the state search - Practice location
- 211 Waukegan RD Ste 200, Northfield, IL 60093
- Phone
- (847) 242-6600
- Enumerated
- Dec 12, 2006
- Record last updated
- Oct 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (847) 242-6605
- Medicare enrollment
- Enrolled (PECOS I20050323001112); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 211 Waukegan RD Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Shapiro, MDInternal Medicine Physician1326026139
Verify Aron Hall Feinberg 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 036-087314Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,745 Medicare Part D claims for 792 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 312 claims were for opioids.
Most prescribed
- Atorvastatin Calcium903 claims
- Levothyroxine Sodium419 claims
- Losartan Potassium329 claims
- Amlodipine Besylate287 claims
- Rosuvastatin Calcium278 claims
- Lisinopril250 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): 93.1 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 GroupNorthfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aron Hall Feinberg among 7,238 internal medicine physician records in Illinois
Aron Hall Feinberg, DO is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1991 · median 2003 among the 3,580 with a school on file
- Record last updated2020 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in Northfield
They are 10 of the 550 NPPES records with a practice address in Northfield, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Northfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Croghan, M.D.Winnetka, IL 600931790724060
- David Donnersberger, MDWinnetka, IL 600931003927948
- Jeanne Farley-Li, M.D.Winnetka, IL 600931487745527
- Daniel Goldstein, M.D.Northfield, IL 600931265401335
- Walter Grobelny, M.D.Winnetka, IL 600931740275015
- Patrick Logan, MDWinnetka, IL 600931790896066
- Robert Magrisso, MDWinnetka, IL 600931316058928
- Roman Mandzij, DOWinnetka, IL 600931841239902
Common questions
What is Aron Hall Feinberg, DO's NPI number?
Aron Hall Feinberg, DO's National Provider Identifier (NPI) is 1902967169, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Aron Hall Feinberg, DO located?
The NPPES record lists a practice address at 211 Waukegan RD Ste 200, Northfield, IL, 60093. Phone: (847) 242-6600. Providers update this record themselves, so call before visiting.
How can I verify Aron Hall Feinberg, DO's license?
NPPES lists Illinois license number 036-087314, 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 Aron Hall Feinberg, DO prescribe under Medicare Part D?
In 2024, Aron Hall Feinberg, DO had 9,745 Medicare Part D claims for 792 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Aron Hall Feinberg, DO's MIPS final score?
The 2023 MIPS final score is 93.1 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.