Katherine Addai, MD

Medicare activity in 2024

Official CMS public-use data for Katherine Addai, 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)414 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)194 services
3. Hospital discharge day management, more than 30 minutes (99239)181 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)96 services
5. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)45 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%
• Diabetes53%
• Arthritis53%
• Chronic kidney disease53%
• Ischemic heart disease47%

Hospitals where Katherine Addai works

Medicare's Facility Affiliation Data lists Katherine Addai 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.

• Saint Agnes HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210011

Practice locations

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

• 3320 Benson AveHalethorpe, MD 21227 (667) 600‑2600
• 6710 Mallery DrLanham, MD 20706 (301) 552‑2000
• 900 Caton AveBaltimore, MD 21229

Group practices

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

• St Agnes Healthcare Inc260 clinicians in the group
• Synergy Medical Group LLC109 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Maryland →

Other internal medicine doctors in Halethorpe

Clinicians with the same Medicare primary specialty in Halethorpe, MD — not a recommendation.

• Ifeoluwa Y. Omitowoju, MD
• Waynekid Kam, MD
• Evelyn Gathecha, MD
• Uchechi Egbuhuzo, MD
• Abiy A. Aregawi, MD
• Ravi Datla, MD
• Sumayyah Shah, MD
• Kalonji R. Collins, MD

All internal medicine doctors in Halethorpe →

Other clinicians in St Agnes Healthcare Inc

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

• Esther Clinton, PA
• Steven C. Cunningham, MD
• Essam El-Maghrabi, MD
• Jonathan S. Hunn, MD
• Kristen Fernandez, MD
• Shirley Pack, NP

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