Quick answers
- Does Laleh G. Melstrom accept Medicare assignment?
- Yes. Medicare's clinician data says Laleh G. Melstrom 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 Laleh G. Melstrom see?
- In 2024, CMS data shows 396 Original Medicare patients and 765 services for Laleh G. Melstrom. This counts Original Medicare only and measures volume, not quality.
- What is Laleh G. Melstrom's NPI number?
- 1811153893. 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 Laleh G. Melstrom, 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 | 396 |
|---|---|
| Services billed to Medicare | 765 |
| Different services or procedures | 75 |
| 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)221 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)147 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)76 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)52 services
- Telephone medical discussion with physician, 5-10 minutes (99441)23 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%
- Diabetes49%
- Arthritis47%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
- Ischemic heart disease35%
Practice locations
Addresses where Laleh G. Melstrom is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 FivepointIrvine, CA 92618 (949) 671‑4673
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 1500 E Duarte RdDuarte, CA 91010
- 209 Fair Oaks AveSouth Pasadena, CA 91030 (626) 396‑2900
Group practices
Medicare enrollment lists Laleh G. Melstrom as a member of this group (CMS data updated October 2, 2026).
- City of Hope Medical Foundation982 clinicians in the group
Specialties
- Surgical Oncologyprimary
Other surgical oncologists in Irvine
Clinicians with the same Medicare primary specialty in Irvine, 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 |
|---|---|
| Medical school | Js Weill Medical College, Cornell University |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1811153893 |
| 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
- 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