Christina N. Johnson, MD

Medicare activity in 2024

Official CMS public-use data for Christina N. Johnson, 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)73 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)49 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)29 services
4. 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)21 services
5. Annual depression screening, 5 to 15 minutes (G0444)14 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%
• Arthritis44%
• Diabetes41%
• Depression27%
• Anxiety27%

Hospitals where Christina N. Johnson works

Medicare's Facility Affiliation Data lists Christina N. Johnson 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.

• Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
• Overlook Medical CenterSummit, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310051

Practice locations

Addresses where Christina N. Johnson is enrolled with Medicare (CMS data updated October 2, 2026).

• 33 Overlook Rd, L01Summit, NJ 07901 (908) 522‑5700
• 492 Main StChatham, NJ 07928 (973) 635‑2432

Group practices

Medicare enrollment lists Christina N. Johnson as a member of this group (CMS data updated October 2, 2026).

• Practice Associates Medical Group1,408 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in New Jersey →

Other family doctors in Summit

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

• Sarah M. Murray, MD
• Kalpeshkumar P. Patel, MD
• Nihar Dhokai, MD
• Edward Cho, MD
• Mitul Patel, MD
• Mikel J. Pride, MD
• Jennifer May Ortiz, MD
• Jody Skariah, MD

All family doctors in Summit →

Other clinicians in Practice Associates Medical Group

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

• Kelly O'Donnell, PA
• James J. Hakim, MD
• Robert D. Jongco, MD
• Joseph S. Flanagan, MD
• Kristine V. Cornejo, MD
• Aravind Nagavalli, 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