Quick answers
- Does Pejman G. Mansourian accept Medicare assignment?
- Yes. Medicare's clinician data says Pejman G. Mansourian 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 Pejman G. Mansourian see?
- In 2024, CMS data shows 109 Original Medicare patients and 855 services for Pejman G. Mansourian. This counts Original Medicare only and measures volume, not quality.
- What is Pejman G. Mansourian's NPI number?
- 1336582477. 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 Pejman G. Mansourian, 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 | 109 |
|---|---|
| Services billed to Medicare | 855 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)222 services
- 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 (G2211)183 services
- Advance care planning, first 30 minutes (99497)70 services
- Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month (99491)39 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)38 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 cholesterol74%
- Arthritis54%
- Diabetes50%
- Ischemic heart disease39%
- Heart failure32%
Hospitals where Pejman G. Mansourian works
Medicare's Facility Affiliation Data lists Pejman G. Mansourian 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.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050056
Practice locations
Addresses where Pejman G. Mansourian is enrolled with Medicare (CMS data updated October 2, 2026).
- 1642 W Ave JLancaster, CA 93534 (661) 942‑8463
- 2639 W Ave, K4Lancaster, CA 93536 (661) 526‑0110
- 44215 15th St W, Suite 103Lancaster, CA 93534 (661) 948‑4429
Group practices
Medicare enrollment lists Pejman G. Mansourian as a member of these groups (CMS data updated October 2, 2026).
- Horizon Multicare Group Inc28 clinicians in the group
- Unified Health Associates11 clinicians in the group
Specialties
- Hospitalistprimary
- Critical Care (Intensivists)also
- Internal Medicinealso
Other hospitalists in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.
Other clinicians in Horizon Multicare Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Miami, Lm Miller School Of Medicine |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1336582477 |
| 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