Quick answers
- Does Kristen Lew accept Medicare assignment?
- Yes. Medicare's clinician data says Kristen Lew 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 Kristen Lew see?
- In 2024, CMS data shows 156 Original Medicare patients and 823 services for Kristen Lew. This counts Original Medicare only and measures volume, not quality.
- What is Kristen Lew's NPI number?
- 1841617420. 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 Kristen Lew, 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 | 156 |
|---|---|
| Services billed to Medicare | 823 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)320 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)143 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)107 services
- Influenza vaccine, trivalent, 0.5 ml dosage (90658)44 services
- Administration of influenza virus vaccine (G0008)44 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%
- Diabetes50%
- Chronic kidney disease44%
- Arthritis37%
- Ischemic heart disease30%
Practice locations
Addresses where Kristen Lew is enrolled with Medicare (CMS data updated October 2, 2026).
- 993 N Broadway, Suite ALos Angeles, CA 90012 (909) 633‑2999
Group practices
Medicare enrollment lists Kristen Lew as a member of this group (CMS data updated October 2, 2026).
- Kristen Lew MD Medical Corporation3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Kristen Lew MD Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841617420 |
| 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