Lauren L. O Brien, MD

Medicare activity in 2024

Official CMS public-use data for Lauren L. O Brien, 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)105 services
2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)79 services
3. Insertion of needle into vein for collection of blood sample (36415)75 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)44 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)37 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 pressure59%
• Arthritis44%
• Anxiety38%
• Depression27%
• Osteoporosis27%

Hospitals where Lauren L. O Brien works

Medicare's Facility Affiliation Data lists Lauren L. O Brien 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.

• Holy Redeemer Hospital and Medical CenterMeadowbrook, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390097
• Jefferson Einstein Philadelphia HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390142

Practice locations

Addresses where Lauren L. O Brien is enrolled with Medicare (CMS data updated October 2, 2026).

• 7848 Old York Rd, Suite 200Elkins Park, PA 19027 (267) 287‑8892

Group practices

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

• Rachel Rosen MD PC4 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Pennsylvania →

Other family doctors in Elkins Park

Clinicians with the same Medicare primary specialty in Elkins Park, PA — not a recommendation.

• Rachel E. Rosen, MD
• Priscilla L. Sepe, MD
• Harvey M. Spector, DO
• Juliette E. Louis-Charles, DO
• Robert Dyer, MD

All family doctors in Elkins Park →

Other clinicians in Rachel Rosen MD PC

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

• Rachel E. Rosen, MD
• Kristina M. Olivier, PA
• Jaelyn L. Shaver, 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