Guillana Simon, MSN FNP-BC, RN, CEN
Family Nurse Practitioner · California, MD
Guillana Simon, MSN FNP-BC, RN, CEN is a family nurse practitioner with a practice address in California, Maryland, and NPI 1497270110, issued on Aug 3, 2017. Check the license (Maryland R152798, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Guillana Simon
- Credential
- MSN FNP-BC, RN, CEN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- R152798 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22590 Shady CT, California, MD 20619
- Phone
- (301) 737-0500
- Enumerated
- Aug 3, 2017
- Record last updated
- Oct 29, 2025
- Medicare enrollment
- Enrolled (PECOS I20180824001610); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,124 in Maryland → Look up another NPI →
Also registered at 22590 Shady CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Chylinski, MDInternal Medicine Physician1710408539
- Naomi Constantine, PMHNPPsychiatric/Mental Health Nurse Practitioner1225212756
- Victoria Dube, CRNPFamily Nurse Practitioner1023607686
- Patricia Duswalt, CNMMidwife1104175819
- Christine Garrity, CRNPFamily Nurse Practitioner1821590878
- Archana Gupta, M.D.Family Medicine Physician1609894898
Verify Guillana Simon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R152798Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average family nurse practitioner in 2024
493 Medicare Part D claims for 193 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Prednisone30 claims
- Amlodipine Besylate24 claims
- Albuterol Sulfate Hfa20 claims
- Naproxen19 claims
- Cefdinir18 claims
- Azithromycin17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 3 group practices
- Ctg LLCRockville, MD
- Kinstead Provider Group, P.A.Baltimore, MD
- Medstar Urgent Care LLCWheaton, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Guillana Simon among 4,124 family nurse practitioner records in Maryland
Guillana Simon, MSN FNP-BC, RN, CEN is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 39% of them.
- NPI issued2017 · 39% of these records are older, 57% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2017 · median 2019 among the 2,370 with a school on file
- Record last updated2025 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family nurse practitioner records list a practice address in California
They are 11 of the 318 NPPES records with a practice address in California, and 4,124 family nurse practitioner records in Maryland.
All 4,124 in Maryland → Every provider in California → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Anna Bullis, NPCalifornia, MD 206191346051356
- Victoria Dube, CRNPCalifornia, MD 206191023607686
- Christine Garrity, CRNPCalifornia, MD 206191821590878
- Mary Magill, NPCalifornia, MD 206191194249177
- Danielle Malhotra, CRNPCalifornia, MD 206191992477764
- Nichole Pelletier, CRNPCalifornia, MD 206191841379781
- Ashley Pfeiffer, CRNPCalifornia, MD 206191023993078
- Nichole Riley, FNP-CCalifornia, MD 206191609464239
Common questions
What is Guillana Simon, MSN FNP-BC, RN, CEN's NPI number?
Guillana Simon, MSN FNP-BC, RN, CEN's National Provider Identifier (NPI) is 1497270110, issued on Aug 3, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Guillana Simon, MSN FNP-BC, RN, CEN located?
The NPPES record lists a practice address at 22590 Shady CT, California, MD, 20619. Phone: (301) 737-0500. Providers update this record themselves, so call before visiting.
How can I verify Guillana Simon, MSN FNP-BC, RN, CEN's license?
NPPES lists Maryland license number R152798, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Guillana Simon, MSN FNP-BC, RN, CEN prescribe under Medicare Part D?
In 2024, Guillana Simon, MSN FNP-BC, RN, CEN had 493 Medicare Part D claims for 193 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Guillana Simon, MSN FNP-BC, RN, CEN's MIPS final score?
The 2023 MIPS final score is 76.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.