Dr. Alexandra Dyer Merg, MD
- Medicare services, 2021
- 64
- Part D claims, 2024
- 14
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 625 N Michigan Ave, Chicago, IL 60611
- Practice phone
- Call (312) 640-7740
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Meridian Psychiatric Partners
Chicago, Illinois
Find Dr. Merg's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Alexandra Dyer Merg is a psychiatrist in Chicago, Illinois
Dr. Merg practices at Meridian Psychiatric Partners in Chicago, Illinois.
Dr. Merg's NPI, 1538664941, was assigned on March 27, 2018. Dr. Merg holds Illinois license 036153844.
- NPI
- 1538664941NPI Registry (opens in a new tab)
- NPI enumeration date
- March 27, 2018
- NPI status
- Active
- Practice phone
- (312) 640-7740
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Alexandra Dyer Merg practices at Meridian Psychiatric Partners in Chicago, Illinois
Dr. Merg's primary practice is Meridian Psychiatric Partners, at 625 N Michigan Ave, Chicago, IL 60611 in Cook County. The practice phone is (312) 640-7740.
- Meridian Psychiatric Partners625 N Michigan Ave, Chicago, IL 60611 · Cook CountyPhone(312) 640-7740
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Alexandra Dyer Merg is affiliated with 2 sites of care and 1 medical group
Dr. Merg's primary practice is Meridian Psychiatric Partners in Chicago, Illinois. Dr. Merg is also affiliated with University of Illinois Hospital. Dmand AI also links Dr. Merg to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexandra Dyer Merg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merg practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Meridian Psychiatric Partners | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexandra Dyer Merg is one of 1,527 psychiatrists in Illinois
Psychiatry is Dr. Merg's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Merg is licensed in Illinois.
Specialties and state licenses
- Psychiatry, IllinoisPrimary
Psychiatrists near Dr. Merg
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexandra Dyer Merg billed Medicare for 64 services in 2021
CMS data shows 64 Medicare services from Dr. Merg across 1 procedure code in 2021. Medicare paid $3,523 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Merg's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 282021: 64129%
Dr. Merg compared with the Illinois median for psychiatrists, 2021
- Dr. Merg
- Illinois median
- Medicare services
- 64vs 20368% below
- Part D claims
- 11vs 17494% below
Medians across 1,588 psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. Merg's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexandra Dyer Merg's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Merg's median patient age at 35, with 83% women.
Dr. Merg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women83%
- Men16%
Source: Dmand AI Patient Panel Data
Dr. Alexandra Dyer Merg wrote 14 Medicare Part D claims in 2024
In 2024, Dr. Merg wrote 14 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $1,410 in total drug cost. In 2022, CMS named 20 claims across 1 drug.
Dr. Merg's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 202024: 1145%
Drugs named by CMS: 1 in 2024, 1 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Sources for Dr. Alexandra Dyer Merg's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alexandra Dyer Merg
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Alexandra Dyer Merg's NPI number?
Dr. Alexandra Dyer Merg's NPI number is 1538664941. It was assigned on March 27, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexandra Dyer Merg?
Dr. Alexandra Dyer Merg is a psychiatrist in Chicago, Illinois. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Alexandra Dyer Merg practice?
Dr. Merg practices at 625 N Michigan Ave, Chicago, IL 60611. Dr. Merg's primary practice is Meridian Psychiatric Partners in Chicago, Illinois. Dmand AI also links Dr. Merg to 1 medical group.
What is Dr. Alexandra Dyer Merg's office phone number?
The practice phone on file for Dr. Merg is (312) 640-7740.
What is Dr. Alexandra Dyer Merg's medical license number?
Dr. Merg holds Illinois license 036153844.
Which hospitals is Dr. Alexandra Dyer Merg affiliated with?
Dr. Merg is affiliated with University of Illinois Hospital.
Does Dr. Alexandra Dyer Merg accept Medicare?
Yes. CMS data shows Dr. Merg billed Medicare for 64 services in 2021.
What services does Dr. Alexandra Dyer Merg bill to Medicare?
In 2021, Dr. Merg's most billed Medicare services were hospital inpatient care (99232).
What drugs does Dr. Alexandra Dyer Merg prescribe most?
In 2024 Medicare Part D data, Dr. Merg's most prescribed drugs by claims were Methylphenidate ER.
How long has Dr. Alexandra Dyer Merg been practicing?
Dr. Merg's NPI was assigned in 2018.
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