Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Guillana Simon, MSNFNP-BC, RN, CEN

Individual provider Family Nurse Practitioner · NPI 1497270110

Guillana Simon, MSNFNP-BC, RN, CEN is a Nurse Practitioner in California, Maryland. Graduated from George Washington University School of Medicine in 2017, 9 years ago. Practices with Ctg LLC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
9
Trained at
George Washington University School of Medicine
Licensed in
MD
In the registry since
2017
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

22590 Shady Ct
California, MD 20619-5009
Phone: (301) 737-0500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence R152798 (MD)

Record details

NPI number1497270110
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSNFNP-BC , RN , CEN
Sole proprietorNo
NPI enumeratedAugust 3, 2017
Last updated in NPPESOctober 29, 2025
Certification dateOctober 29, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Ctg Llc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations15 on file with Medicare

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 patients323
Services billed 1,046 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Ctg LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in California