GUILLANA SIMON MSN FNP-BC, RN, CEN
NPI 1497270110
Nurse Practitioner - Family in California, MD
About Guillana Simon Msn Fnp-bc, Rn, Cen NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GUILLANA SIMON MSN FNP-BC, RN, CEN (NPI 1497270110) is an individual family provider in California, Maryland, licensed in Maryland (R152798) and active in the NPI registry since August 2017. She is enrolled in Medicare PECOS, is affiliated with Suburban Hospital, and is a graduate of George Washington University School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Guillana Simon Msn Fnp-bc, Rn, Cen is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
9Medicare enrollment records show Guillana Simon reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hollywood, MD 20636
- Reassigned Medicare billing, Maryland enrollment
- 307 clinicians in this Medicare group
Largo, MD 20774
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
- Also billed through NPI 1134117393 (Virginia)
- 1,150 clinicians in this Medicare group
Washington, DC 20060
- Reassigned Medicare billing, District of Columbia enrollment
- 105 clinicians in this Medicare group
Vienna, VA 22182
- Reassigned Medicare billing, District of Columbia enrollment
- 2 clinicians in this Medicare group
Wheaton, MD 20902
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 309 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 8 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 251 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3 clinicians in this Medicare group
North Potomac, MD 20878
- Reassigned Medicare billing, Maryland enrollment
- 13 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 14
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Suburban Hospital
Acute Care Hospitals · Bethesda, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20619 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CALIFORNIA, MD 20619
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Guillana Simon's NPI number?
The NPI number for Guillana Simon is 1497270110. It was assigned to this individual provider in the NPPES registry on August 3, 2017.
Where is Guillana Simon located?
Guillana Simon practices at 22590 Shady Ct, California, MD 20619. The listed phone number is (301) 737-0500.
What is Guillana Simon's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Guillana Simon enrolled in Medicare?
Yes. Guillana Simon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Guillana Simon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Guillana Simon reassigns Medicare benefits to 9 organizations: Medstar Medical Group - Southern Maryland LLC (Hollywood, MD), Emergency Medicine Associates, PA (Largo, MD), Cep America, LLC (Washington, DC), Joyful Clinics Medical Group PC (Vienna, VA), Medstar Urgent Care, LLC (Wheaton, MD) and 4 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Guillana Simon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Guillana Simon affiliated with any hospitals?
According to CMS data, Guillana Simon is affiliated with Suburban Hospital.
When was this NPI record last updated?
The NPPES record for Guillana Simon was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Guillana Simon, MSN FNP-BC, RN, CEN · NPI 1497270110
Family physician in California, Maryland. Individual provider, active in the CMS NPPES registry since August 3, 2017.
## Identity
- **NPI:** 1497270110 (Entity type: Individual)
- **Enumerated:** August 3, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R152798 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 22590 SHADY CT, California, MD 20619-5009
- **Phone:** (301) 737-0500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group - Southern Maryland LLC (NPI 1831592211, Hollywood, MD); Emergency Medicine Associates, PA (NPI 1861243818, Largo, MD); Cep America, LLC (NPI 1831564657, Washington, DC); Joyful Clinics Medical Group PC (NPI 1861359887, Vienna, VA); Medstar Urgent Care, LLC (NPI 1871843409, Wheaton, MD); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** October 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1497270110) · Data from the CMS NPPES public registry.