Amelia M. Merz, MD
Psychiatry Physician · Berwyn, IL
Amelia M. Merz, MD is a psychiatry physician with a practice address in Berwyn, Illinois, and NPI 1770637399, issued on Jan 22, 2007. Check the license (Illinois 036135989, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Amelia M. Merz
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 036135989 IL
47240 MN
Self-reported in NPPES; status is on the state search - Practice location
- 3249 Oak Park Ave, Berwyn, IL 60402
- Phone
- (708) 783-9100
- Enumerated
- Jan 22, 2007
- Record last updated
- Dec 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,147 in Illinois → Look up another NPI →
Also registered at 3249 Oak Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Alexis, M.D.Emergency Medicine Physician1689608713
Verify Amelia M. Merz 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 036135989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average psychiatry physician in 2024
14 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $196.26
10 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Amelia M. Merz among 2,147 psychiatry physician records in Illinois
Amelia M. Merz, MD is one of 2,147 psychiatry physician records with a practice address in Illinois. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2015 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Illinois
There are 2,147 psychiatry physician records in Illinois.
All 2,147 in Illinois → Every provider in Berwyn → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Mark Amdur, MDBerwyn, IL 604021346277274
- Elizabeth Canelas, M.D.Berwyn, IL 604021376761080
- William Egan, MDBerwyn, IL 604021932205481
- Mary Fahrmeier, MDBerwyn, IL 604021245252303
- Laurie Kenfield, MDBerwyn, IL 604021700802501
- Syed Khan, MDBerwyn, IL 604021407807746
- John Lim, MDBerwyn, IL 604021275586901
- Sarah Mennella, MDBerwyn, IL 604021659802148
Common questions
What is Amelia M. Merz, MD's NPI number?
Amelia M. Merz, MD's National Provider Identifier (NPI) is 1770637399, issued on Jan 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Amelia M. Merz, MD located?
The NPPES record lists a practice address at 3249 Oak Park Ave, Berwyn, IL, 60402. Phone: (708) 783-9100. Providers update this record themselves, so call before visiting.
How can I verify Amelia M. Merz, MD's license?
NPPES lists Illinois license number 036135989, 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 Amelia M. Merz, MD prescribe under Medicare Part D?
In 2024, Amelia M. Merz, MD had 14 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.