Zeljka Kostich, M.D
NPI 1487698114 · Emergency Medicine Physician · Wildomar, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zeljka Kostich, M.D is a Emergency Medicine Physician provider in Wildomar, CA (NPI 1487698114).
Provider details
- NPI number
- 1487698114
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- A71520 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
356 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 221 | $181 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 73 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 48 | $125 |
| Critical Care, First 30-74 Minutes99291 | 14 | $221 |
Typical Medicare-allowed amounts for these services range $8–$221 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 38 | 38 |
| Ondansetronbrand: Ondansetron Odt | 30 | 30 |
| Cephalexin | 26 | 26 |
| Prednisone | 18 | 18 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 | 15 |
| Azithromycin | 15 | 15 |
| Sulfamethoxazole/Trimethoprim |
Practice location
Mailing address
Additional practice locations (1)
- 25500 Medical Center DrMurrieta, CA 92562-5965Phone: (951) 696-6000
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2024-02-28
- Certified
- 2024-02-28
Frequently asked questions
- What is Zeljka Kostich's NPI number?
- Zeljka Kostich's National Provider Identifier (NPI) is 1487698114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zeljka Kostich's specialty?
- Zeljka Kostich is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zeljka Kostich located?
- Zeljka Kostich's practice location on file with NPPES is 36485 Inland Valley Dr, Wildomar, CA 92595-9681.
- What is Zeljka Kostich's phone number?
- The practice phone number listed in the NPPES registry for Zeljka Kostich is (951) 677-1111.
- Does Zeljka Kostich accept Medicare?
- Zeljka Kostich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zeljka Kostich's NPI active?
- Yes — Zeljka Kostich's NPI (1487698114) is active in the NPPES registry as of the last update on 2024-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.