Matilda S. Mason, MD

Medicare activity in 2024

Official CMS public-use data for Matilda S. Mason, 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 50 minutes (99233)477 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)164 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)139 services
4. Hospital discharge day management, more than 30 minutes (99239)129 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%
• Ischemic heart disease62%
• Arthritis56%
• Chronic kidney disease56%
• Heart failure52%

Hospitals where Matilda S. Mason works

Medicare's Facility Affiliation Data lists Matilda S. Mason 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.

• Ahs Hospital CorpHackettstown, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310115
• Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
• Newton Medical CenterNewton, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310028

Practice locations

Addresses where Matilda S. Mason is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 Madison AveMorristown, NJ 07960 (973) 971‑5596
• 175 High StNewton, NJ 07860 (973) 383‑2121
• 651 Willow Grove StHackettstown, NJ 07840 (908) 441‑1161

Group practices

Medicare enrollment lists Matilda S. Mason as a member of this group (CMS data updated October 2, 2026).

• Practice Associates Medical Group1,408 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Morristown

Clinicians with the same Medicare primary specialty in Morristown, NJ — not a recommendation.

• Daniel D. Silverstein, MD
• Mamoona Rashid, MD
• Bernard C. Rosenthal, MD
• Haydee M. Soto, MD
• Joseph Caulfield, DO
• Dana Lyn S. Brahms, MD
• Yonatan Akivis, MD
• Anna M. Raska, MD

All internal medicine doctors in Morristown →

Other clinicians in Practice Associates Medical Group

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

• Yuriy Khanin, MD
• David A. Bittone, PA
• Janet B. Bartov
• Lauren R. Kovacs, MD
• Rio K. Zephyr, DO
• Farah Alshammary, DO

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