Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Jenie Marylynn Mussallem, MS, CNS

Individual provider Nutritionist · NPI 1538853650

Mrs. Jenie Marylynn Mussallem, MS, CNS is registered under Registered Dietitian OR Nutrition Professional in Morrisville, Pennsylvania. Qualified in 2020, 6 years ago. Practices with Simplex Health, a 22-clinician group, accepts Medicare assignment and offers telehealth.

Years since qualifying
6
In the registry since
2023
What do these letters mean?
MS — Master of Science
A graduate science degree.
CNS — Clinical Nurse Specialist
An advanced practice nurse specialising in a patient population or setting.

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Practice location Address checks out

145 Independence Dr
Morrisville, PA 19067-4910
Phone: (267) 565-7915
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nutritionist (primary) Taxonomy 133N00000X

Record details

NPI number1538853650
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , CNS
Sole proprietorYes
NPI enumeratedJune 5, 2023
Last updated in NPPESJune 5, 2023
Certification dateJune 3, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Simplex Health — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients19
Services billed 136 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Simplex Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 22 clinicians in the practice; 12 are shown here.