Karlen Ulubabyan, MD

Medicare activity in 2024

Official CMS public-use data for Karlen Ulubabyan, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)103 services
2. Hospital discharge day management, more than 30 minutes (99239)15 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%
• Arthritis67%
• Ischemic heart disease62%
• Chronic kidney disease56%
• Diabetes51%

Hospitals where Karlen Ulubabyan works

Medicare's Facility Affiliation Data lists Karlen Ulubabyan 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.

• New York-Presbyterian HospitalNew York, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330101
• UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050481

Practice locations

Addresses where Karlen Ulubabyan is enrolled with Medicare (CMS data updated October 2, 2026).

• 170 William StNew York, NY 10038 (212) 312‑5000
• 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
• 525 E 68th StNew York, NY 10065 (646) 962‑3376
• 7300 Medical Ctr DrWest Hills, CA 91307 (818) 676‑4000

Group practices

Medicare enrollment lists Karlen Ulubabyan as a member of these groups (CMS data updated October 2, 2026).

• Weill Medical College of Cornell2,051 clinicians in the group
• The Regents of the University of California1,462 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in New York →

Other hospitalists in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

• John Hon, MD
• Inna Carmela M. De Leon
• Michael P. Wagner, MD
• Adam Z. Tepler, MD
• Caroline E. Bell, MD
• Connie Chen, MD
• Alexandria R. Matthews, MD
• Lori C. Katinas, MD

All hospitalists in New York →

Other clinicians in Weill Medical College of Cornell

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

• Helene L. Strauss, MD
• Patricia Marino
• Alexander Phan, MD
• Francesca Khani, MD
• Erica D. Weinstein, MD
• Sasha Fahme, 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