Mark F. Lew, MD

Medicare activity in 2024

Official CMS public-use data for Mark F. 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)399 services
2. Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)113 services
3. Injection of chemical for paralysis of nerve muscles on side of neck excluding voice box (64616)100 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)75 services
5. Injection of chemical for paralysis of nerve muscles on side of face (64612)56 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 cholesterol75%
• High blood pressure67%
• Arthritis52%
• Depression26%
• Anxiety25%
• Ischemic heart disease24%

Hospitals where Mark F. Lew works

Medicare's Facility Affiliation Data lists Mark F. Lew 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.

• Casa Colina HospitalPomona, CA · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 050782
• Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
• Huntington HospitalPasadena, CA · Acute Care Hospital · Emergency services: listed by Medicare · CCN 050438
• Keck Hospital of USCLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050696

Practice locations

Addresses where Mark F. Lew is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 1500 San Pablo StLos Angeles, CA 90033
• 1516 San Pablo StLos Angeles, CA 90033 (800) 872‑2273
• 1516 San Pablo St, Suite L3100Los Angeles, CA 90033 (800) 872‑2273
• 1520 San Pablo StLos Angeles, CA 90033 (800) 872‑2273
• 1520 San Pablo St, Fl 4Los Angeles, CA 90033 (800) 872‑2273

Group practices

Medicare enrollment lists Mark F. Lew as a member of this group (CMS data updated October 2, 2026).

• USC Care Medical Group Inc1,380 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in California →

Other neurologists in Los Angeles

Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.

• Arthur P. Kowell, MD
• Allan Q. Phan, MD
• Vijay A. Vishwanath, MD
• Jessica Meir, MD
• Lauren Green, DO
• Amir A. Badiei, MD
• Elaine Su, MD
• Sanaz Karimi, MD

All neurologists in Los Angeles →

Other clinicians in USC Care Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Weihuang V. Ning, MD
• Cara J. Hall, MD
• Daniel Arkfeld
• Nora Dixon
• Nathanael D. Heckmann, MD
• Maria Nicole H. Carmack, PA

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians