Quick answers
- Does Carsten Nadjat-Haiem accept Medicare assignment?
- Yes. Medicare's clinician data says Carsten Nadjat-Haiem accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Carsten Nadjat-Haiem see?
- In 2024, CMS data shows 115 Original Medicare patients and 136 services for Carsten Nadjat-Haiem. This counts Original Medicare only and measures volume, not quality.
- What is Carsten Nadjat-Haiem's NPI number?
- 1811938749. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Carsten Nadjat-Haiem, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 115 |
|---|---|
| Services billed to Medicare | 136 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Insertion of artery tube for blood sampling or infusion through skin (36620)20 services
- Anesthesia for other procedure on brain (00210)19 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Anxiety43%
- Ischemic heart disease39%
- Depression31%
Hospitals where Carsten Nadjat-Haiem works
Medicare's Facility Affiliation Data lists Carsten Nadjat-Haiem at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050262
Practice locations
Addresses where Carsten Nadjat-Haiem is enrolled with Medicare (CMS data updated October 2, 2026).
- 1245 16th StSanta Monica, CA 90404 (310) 794‑1841
- 757 Westwood PlzLos Angeles, CA 90095 (310) 825‑9111
Group practices
Medicare enrollment lists Carsten Nadjat-Haiem as a member of this group (CMS data updated October 2, 2026).
- Regents of the University of California236 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Other clinicians in Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811938749 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians