Quick answers
- Does Nerses S. Tchekmedyian accept Medicare assignment?
- Yes. Medicare's clinician data says Nerses S. Tchekmedyian 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 Nerses S. Tchekmedyian see?
- In 2024, CMS data shows 128 Original Medicare patients and 22,430 services for Nerses S. Tchekmedyian. This counts Original Medicare only and measures volume, not quality.
- What is Nerses S. Tchekmedyian's NPI number?
- 1821032129. 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 Nerses S. Tchekmedyian, 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 | 128 |
|---|---|
| Services billed to Medicare | 22,430 |
| Different services or procedures | 93 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)1,020 services
- Injection of additional new drug or substance into vein (96375)50 services
- Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)46 services
- Administration of chemotherapy into vein, 1 hour or less (96413)34 services
- Injection of drug or substance under skin or into muscle (96372)32 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 cholesterol73%
- High blood pressure70%
- Arthritis53%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)39%
- Osteoporosis38%
- Chronic kidney disease36%
Hospitals where Nerses S. Tchekmedyian works
Medicare's Facility Affiliation Data lists Nerses S. Tchekmedyian 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.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
Practice locations
Addresses where Nerses S. Tchekmedyian is enrolled with Medicare (CMS data updated October 2, 2026).
- 1043 Elm Ave, Suite 104Long Beach, CA 90813 (562) 590‑0345
- 1601 Avocado AveNewport Beach, CA 92660 (949) 763‑2204
- 16300 Sand Canyon Ave, Suite 207Irvine, CA 92618 (949) 333‑7580
- 209 Fair Oaks AveSouth Pasadena, CA 91030 (626) 396‑2900
- 3747 Worsham Ave, Suite 101Long Beach, CA 90808 (562) 430‑5900
Group practices
Medicare enrollment lists Nerses S. Tchekmedyian as a member of this group (CMS data updated October 2, 2026).
- City of Hope Medical Foundation982 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Long Beach
Clinicians with the same Medicare primary specialty in Long Beach, CA — not a recommendation.
Other clinicians in City of Hope Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1978 (48 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) | 1821032129 |
| 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