John Zajecka, M.D.
NPI 1275661399 · Psychiatry Physician · Skokie, IL
John Zajecka, M.D. is a Psychiatry Physician provider in Skokie, IL (NPI 1275661399).
Provider details
- NPI number
- 1275661399
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036071498 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Paroxetine Hcl | 78 | — |
| Duloxetine Hcl | 71 | 16 |
| Gabapentin | 62 | 12 |
| Lithium Carbonatebrand: Lithium Carbonate Er | 61 | — |
| Clonazepam | 59 | 11 |
| Trazodone Hcl | 56 | 14 |
| Alprazolam | 55 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,742 across 103 records (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
Additional practice locations (1)
- 1700 W Van Buren StChicago, IL 60612-3218Phone: (773) 942-5592Fax: (773) 563-2588
Registry dates
- Enumerated
- 2007-03-01
- Last updated
- 2022-07-21
Frequently asked questions
- What is John Zajecka's NPI number?
- John Zajecka's National Provider Identifier (NPI) is 1275661399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zajecka's specialty?
- John Zajecka is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Zajecka located?
- John Zajecka's practice location on file with NPPES is 4711 Golf Rd Ste 1200, Skokie, IL 60076-1200.
- What is John Zajecka's phone number?
- The practice phone number listed in the NPPES registry for John Zajecka is (847) 679-8000.
- Is John Zajecka's NPI active?
- Yes — John Zajecka's NPI (1275661399) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.