Zeljko Ivanovic, MD
NPI 1083669378 · Psychiatry Physician · Fort Collins, CO
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zeljko Ivanovic, MD is a Psychiatry Physician provider in Fort Collins, CO (NPI 1083669378).
Provider details
- NPI number
- 1083669378
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0050477 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lamotrigine | 20 |
| Quetiapine Fumarate | 17 |
| Duloxetine Hcl | 16 |
| Trazodone Hcl | 15 |
| Buspirone Hcl | 13 |
| Mirtazapine | 13 |
| Ziprasidone Hcl | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 4856 Innovation DrFort Collins, CO 80525-5539Phone: (970) 494-4200Fax: (844) 270-1824
Registry dates
- Enumerated
- 2006-05-24
- Last updated
- 2024-10-23
- Certified
- 2024-10-23
Frequently asked questions
- What is Zeljko Ivanovic's NPI number?
- Zeljko Ivanovic's National Provider Identifier (NPI) is 1083669378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zeljko Ivanovic's specialty?
- Zeljko Ivanovic is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Zeljko Ivanovic located?
- Zeljko Ivanovic's practice location on file with NPPES is 120 Bristlecone Dr, Fort Collins, CO 80524-2031.
- What is Zeljko Ivanovic's phone number?
- The practice phone number listed in the NPPES registry for Zeljko Ivanovic is (970) 224-5209.
- Does Zeljko Ivanovic accept Medicare?
- Zeljko Ivanovic is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zeljko Ivanovic's NPI active?
- Yes — Zeljko Ivanovic's NPI (1083669378) is active in the NPPES registry as of the last update on 2024-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.