Ethan Karsen, MD
NPI 1326330267 · Psychiatry Physician · Evanston, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ethan Karsen, MD is a Psychiatry Physician provider in Evanston, IL (NPI 1326330267).
Provider details
- NPI number
- 1326330267
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
165 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 104 | $125 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 44 | $83 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 17 | $120 |
Typical Medicare-allowed amounts for these services range $83–$125 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 17 | — |
| Aripiprazole | 16 | — |
| Sertraline Hcl | 15 | — |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 13 | — |
| Mirtazapine | 13 | 11 |
| Trazodone Hcl | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-11
- Last updated
- 2021-04-23
- Certified
- 2021-03-30
Frequently asked questions
- What is Ethan Karsen's NPI number?
- Ethan Karsen's National Provider Identifier (NPI) is 1326330267, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ethan Karsen's specialty?
- Ethan Karsen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ethan Karsen located?
- Ethan Karsen's practice location on file with NPPES is 2650 Ridge Ave., Evanston, IL 60201.
- What is Ethan Karsen's phone number?
- The practice phone number listed in the NPPES registry for Ethan Karsen is (847) 425-6400.
- Does Ethan Karsen accept Medicare?
- Ethan Karsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ethan Karsen's NPI active?
- Yes — Ethan Karsen's NPI (1326330267) is active in the NPPES registry as of the last update on 2021-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.