Nima Nassiri, M.D.
NPI 1821450974 · Urology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nima Nassiri, M.D. is a Urology Physician provider in Los Angeles, CA (NPI 1821450974).
Provider details
- NPI number
- 1821450974
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A156081 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
55 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) |
|---|---|---|
| Transplantation of Donor Kidney50360 | 24 | $2,526 |
| Preparation of Donor Kidney for Transplantation50323 | 19 | $108 |
| Simple Removal of Foreign Body, Stone, Or Stent in Urethra Or Bladder Using an Endoscope52310 | 12 | $364 |
Typical Medicare-allowed amounts for these services range $108–$2,526 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$293 across 3 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
Additional practice locations (1)
- 2051 Marengo StLos Angeles, CA 90033-1352Phone: (818) 438-7111
Registry dates
- Enumerated
- 2016-03-27
- Last updated
- 2021-08-09
- Certified
- 2021-08-09
Frequently asked questions
- What is Nima Nassiri's NPI number?
- Nima Nassiri's National Provider Identifier (NPI) is 1821450974, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nima Nassiri's specialty?
- Nima Nassiri is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Nima Nassiri located?
- Nima Nassiri's practice location on file with NPPES is 200 Ucla Medical Plz Ste 140, Los Angeles, CA 90095-1352.
- What is Nima Nassiri's phone number?
- The practice phone number listed in the NPPES registry for Nima Nassiri is (310) 206-8164.
- Does Nima Nassiri accept Medicare?
- Nima Nassiri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nima Nassiri's NPI active?
- Yes — Nima Nassiri's NPI (1821450974) is active in the NPPES registry as of the last update on 2021-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.