Koosha Mortazavi, M.D.
NPI 1215966999 · Nephrology Physician · Oxnard, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Koosha Mortazavi, M.D. is a Nephrology Physician provider in Oxnard, CA (NPI 1215966999).
Provider details
- NPI number
- 1215966999
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A91559 (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 tenure28% of score
19 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
2,288 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 714 | $109 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 582 | $128 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 363 | $387 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 168 | $86 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 122 | $188 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 263 | 79 |
| Losartan Potassium | 193 | 63 |
| Furosemide | 190 | 64 |
| Hydralazine Hcl | 168 | 45 |
| Dapagliflozin Propanediolbrand: Farxiga | 107 | 27 |
| Hydrochlorothiazide | 99 | 34 |
| Sevelamer Carbonate | 91 | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2010-01-14
Frequently asked questions
- What is Koosha Mortazavi's NPI number?
- Koosha Mortazavi's National Provider Identifier (NPI) is 1215966999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Koosha Mortazavi's specialty?
- Koosha Mortazavi is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Koosha Mortazavi located?
- Koosha Mortazavi's practice location on file with NPPES is 1200 W Gonzales Rd, Oxnard, CA 93036-3072.
- What is Koosha Mortazavi's phone number?
- The practice phone number listed in the NPPES registry for Koosha Mortazavi is (805) 278-9094.
- Does Koosha Mortazavi accept Medicare?
- Koosha Mortazavi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Koosha Mortazavi's NPI active?
- Yes — Koosha Mortazavi's NPI (1215966999) is active in the NPPES registry as of the last update on 2010-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.