Andrew Jonathon Geiser, MD
Emergency Medicine Physician · Libertyville, IL
Andrew Jonathon Geiser, MD is an emergency medicine physician with a practice address in Libertyville, Illinois, and NPI 1891343133, issued on Aug 29, 2019. Check the license (Illinois 125081849, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Andrew Jonathon Geiser
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 125081849 IL
Self-reported in NPPES; status is on the state search - Practice location
- 801 S Milwaukee Ave, Libertyville, IL 60048
- Phone
- (847) 362-2900
- Enumerated
- Aug 29, 2019
- Record last updated
- Jul 2, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 801 S Milwaukee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dominique AreolaPediatric Occupational Therapist1669933594
- Jenna AshleySurgical Physician Assistant1346082153
Verify Andrew Jonathon Geiser 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 125081849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average emergency medicine physician in 2024
66 Medicare Part D claims for 41 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin12 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.
Andrew Jonathon Geiser among 3,291 emergency medicine physician records in Illinois
Andrew Jonathon Geiser, MD is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 74% of them.
- NPI issued2019 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 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 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 emergency medicine physician records list a practice address in Libertyville
They are 15 of the 1,361 NPPES records with a practice address in Libertyville, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Libertyville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Christopher Beach, M.D.Libertyville, IL 600481649245564
- J Eric Castro, MDLibertyville, IL 600481316971807
- Joshua Hallett, D.O.Libertyville, IL 600481336452861
- Roy Horras, M.D., FACEPLibertyville, IL 600481255356663
- Shahab Kazi, DOLibertyville, IL 600481194306894
- Peter Kurko, M.D.Libertyville, IL 600481225065782
- Rachel McDowell, MDLibertyville, IL 600481104879071
- Dimitrios Mougolias, M.D.Libertyville, IL 600481053520700
Common questions
What is Andrew Jonathon Geiser, MD's NPI number?
Andrew Jonathon Geiser, MD's National Provider Identifier (NPI) is 1891343133, issued on Aug 29, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Jonathon Geiser, MD located?
The NPPES record lists a practice address at 801 S Milwaukee Ave, Libertyville, IL, 60048. Phone: (847) 362-2900. Providers update this record themselves, so call before visiting.
How can I verify Andrew Jonathon Geiser, MD's license?
NPPES lists Illinois license number 125081849, 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 Andrew Jonathon Geiser, MD prescribe under Medicare Part D?
In 2024, Andrew Jonathon Geiser, MD had 66 Medicare Part D claims for 41 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.