Amir Ghiassi, M.D.
NPI 1518983899 · Critical Care Medicine (Internal Medicine) Physician · Orange, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amir Ghiassi, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Orange, CA (NPI 1518983899).
Provider details
- NPI number
- 1518983899
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C52272 (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
19 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
491 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 225 | $216 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 131 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 32 | $81 |
| Critical Care, Each Additional 30 Minutes99292 | 31 | $109 |
| Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556 | 21 | $85 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 20 | $14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,873 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
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2018-04-09
Frequently asked questions
- What is Amir Ghiassi's NPI number?
- Amir Ghiassi's National Provider Identifier (NPI) is 1518983899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amir Ghiassi's specialty?
- Amir Ghiassi is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Amir Ghiassi located?
- Amir Ghiassi's practice location on file with NPPES is 1100 W Stewart Dr, Orange, CA 92868-3849.
- What is Amir Ghiassi's phone number?
- The practice phone number listed in the NPPES registry for Amir Ghiassi is (714) 633-9111.
- Does Amir Ghiassi accept Medicare?
- Amir Ghiassi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amir Ghiassi's NPI active?
- Yes — Amir Ghiassi's NPI (1518983899) is active in the NPPES registry as of the last update on 2018-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.