Karen St.jean

Medicare activity in 2024

Official CMS public-use data for Karen St.jean, 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. 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)111 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)84 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)51 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 cholesterol71%
• High blood pressure70%
• Arthritis51%
• Diabetes43%
• Osteoporosis39%
• Chronic kidney disease32%

Hospitals where Karen St.jean works

Medicare's Facility Affiliation Data lists Karen St.jean 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.

• Anna Jaques HospitalNewburyport, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220029
• Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
• Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
• Northeast Hospital CorporationBeverly, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220033
• Winchester HospitalWinchester, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220105

Practice locations

Addresses where Karen St.jean is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Essex Ctr DrPeabody, MA 01960 (978) 538‑4000
• 29 Mall RdBurlington, MA 01805
• 41 Mall RdBurlington, MA 01805

Group practices

Medicare enrollment lists Karen St.jean as a member of this group (CMS data updated October 2, 2026).

• Lahey Clinic Inc1,381 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in Massachusetts →

Other endocrinologists in Peabody

Clinicians with the same Medicare primary specialty in Peabody, MA — not a recommendation.

• Scott Sperling, MD
• Shant Parseghian, MD
• Leo Tchong, MD
• Dinamarie C. Garcia Banigan, MD
• Sathyavani Prabhakar, MD
• Gianluca Toraldo, MD
• Helen Kaulbach, MD
• Angela M. Restrepo, MD

All endocrinologists in Peabody →

Other clinicians in Lahey Clinic Inc

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

• Diana M. Sinagra, CSW
• Shamila M. Saiyed, MD
• Michael Soule, MD
• Lynda L. Consolo
• Himanshu Malhotra, DO
• Danitza Z. Lukac

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