Kirollos Zaki, D.O
NPI 1104270305 · Nephrology Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kirollos Zaki, D.O is a Nephrology Physician provider in Riverside, CA (NPI 1104270305).
Provider details
- NPI number
- 1104270305
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Male
- Sole proprietor
- No
- License
- 16166 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,197 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 | 370 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 318 | $76 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 214 | $350 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 105 | $172 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 83 | $111 |
| Hemodialysis Procedure With Physician Evaluation90935 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 74 | 29 |
| Nifedipinebrand: Nifedipine Er | 58 | 21 |
| Dapagliflozin Propanediolbrand: Farxiga | 57 | 19 |
| Sitagliptin Phosphatebrand: Januvia | 55 | — |
| Losartan Potassium | 54 | 19 |
| Sevelamer Carbonate | 47 | 20 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$138 across 7 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
Registry dates
- Enumerated
- 2016-04-14
- Last updated
- 2022-09-02
- Certified
- 2022-09-02
Frequently asked questions
- What is Kirollos Zaki's NPI number?
- Kirollos Zaki's National Provider Identifier (NPI) is 1104270305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kirollos Zaki's specialty?
- Kirollos Zaki is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Kirollos Zaki located?
- Kirollos Zaki's practice location on file with NPPES is 3660 Park Sierra Dr Ste 208, Riverside, CA 92505-3071.
- What is Kirollos Zaki's phone number?
- The practice phone number listed in the NPPES registry for Kirollos Zaki is (951) 687-2800.
- Does Kirollos Zaki accept Medicare?
- Kirollos Zaki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kirollos Zaki's NPI active?
- Yes — Kirollos Zaki's NPI (1104270305) is active in the NPPES registry as of the last update on 2022-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.