Lacy L. Knowles, DO

Medicare activity in 2024

Official CMS public-use data for Lacy L. Knowles, 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. Insertion of needle into vein for collection of blood sample (36415)354 services
2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)277 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)215 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)138 services
5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)11 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%
• Arthritis75%
• High blood pressure66%
• Ischemic heart disease24%
• Anxiety20%
• Diabetes19%

Hospitals where Lacy L. Knowles works

Medicare's Facility Affiliation Data lists Lacy L. Knowles 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.

• Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625

Practice locations

Addresses where Lacy L. Knowles is enrolled with Medicare (CMS data updated October 2, 2026).

• 6801 Park Ter, Suite 300Los Angeles, CA 90045 (310) 655‑7200

Group practices

Medicare enrollment lists Lacy L. Knowles as a member of this group (CMS data updated October 2, 2026).

• Cedars-Sinai Medical Care Foundation1,692 clinicians in the group

Specialties

• Sports Medicineprimary
• Family Practicealso

Find other Sports Medicine doctors in California →

Other sports medicine doctors in Los Angeles

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

• Alan H. Lee, MD
• Cara J. Hall, MD
• Kevin Collon, MD
• Roy R. Akarakian, MD
• Robert Klapper, MD
• Frank A. Petrigliano, MD
• James E. Tibone, MD
• Alexander E. Weber, MD

All sports medicine doctors in Los Angeles →

Other clinicians in Cedars-Sinai Medical Care Foundation

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

• Paul S. Lin, MD
• Philomena F. McAndrew, MD
• Kenton S. Horacek, MD
• Vida Z. Zhang, MD
• Chelsea Batista, PT
• Daniel Sullivan, MD

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