Quick answers
- Does Amartej Merla accept Medicare assignment?
- Yes. Medicare's clinician data says Amartej Merla 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 Amartej Merla see?
- In 2024, CMS data shows 700 Original Medicare patients and 137,840 services for Amartej Merla. This counts Original Medicare only and measures volume, not quality.
- What is Amartej Merla's NPI number?
- 1902097744. 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 Amartej Merla, 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 | 700 |
|---|---|
| Services billed to Medicare | 137,840 |
| Different services or procedures | 119 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, ferric carboxymaltose, 1 mg (J1439)21,000 services
- Injection, pembrolizumab, 1 mg (J9271)12,800 services
- Injection, aprepitant, 1 mg (J0185)7,800 services
- Injection, paclitaxel, 1 mg (J9267)6,756 services
- Injection, denosumab, 1 mg (J0897)4,140 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%
- Arthritis52%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)52%
- Diabetes42%
- Ischemic heart disease33%
Hospitals where Amartej Merla works
Medicare's Facility Affiliation Data lists Amartej Merla 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
- Northern Inyo HospitalBishop, CA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 051324
- Palmdale Regional Medical CenterPalmdale, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050204
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051333
Practice locations
Addresses where Amartej Merla is enrolled with Medicare (CMS data updated October 2, 2026).
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 1500 E Duarte RdDuarte, CA 91010
- 209 Fair Oaks AveSouth Pasadena, CA 91030 (626) 396‑2900
- 44151 15th St W, Suite 101Lancaster, CA 93534 (661) 902‑5600
Group practices
Medicare enrollment lists Amartej Merla 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 Duarte
Clinicians with the same Medicare primary specialty in Duarte, 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 | 2002 (24 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) | 1902097744 |
| 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