Denis Kollar, MD
NPI 1154375830 · Emergency Medicine Physician · West Covina, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Denis Kollar, MD is a Emergency Medicine Physician provider in West Covina, CA (NPI 1154375830).
Provider details
- NPI number
- 1154375830
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G25046 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
408 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 | 129 | $185 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 116 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 49 | $128 |
| Critical Care, Each Additional 30 Minutes99292 | 40 | $115 |
| X-Ray of Chest, 1 View71045 | 37 | $9 |
| Critical Care, First 30-74 Minutes99291 | 37 | $228 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Denis Kollar's NPI number?
- Denis Kollar's National Provider Identifier (NPI) is 1154375830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Denis Kollar's specialty?
- Denis Kollar is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Denis Kollar located?
- Denis Kollar's practice location on file with NPPES is 1115 S Sunset Ave, West Covina, CA 91790-3940.
- What is Denis Kollar's phone number?
- The practice phone number listed in the NPPES registry for Denis Kollar is (626) 814-2434.
- Does Denis Kollar accept Medicare?
- Denis Kollar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Denis Kollar's NPI active?
- Yes — Denis Kollar's NPI (1154375830) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.