Active NPI
Guillana Simon, MSN FNP-BC, RN, CEN
- Family Nurse Practitioner
- California, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- R152798
- Practice address
- 22590 Shady CT
California, MD 20619-5009 - Phone
- (301) 737-0500
- NPI assigned
- Aug 3, 2017
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Nurse Practitioner | 363LF0000X | R152798 | MD | Primary |
Addresses
Primary practice location
22590 Shady CT
California, MD 20619-5009
Mailing address
11186 Sewickley St
Waldorf, MD 20601-2688
Phone (240) 222-2667
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MD, DC, VA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 3
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- George Washington University School of Medicine, 2017
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
- Medstar Urgent Care LLC
Practice addresses (Care Compare)
11810 Grand Park Ave
Suite 500
Rockville, MD 20852-8679
Phone (443) 858-9401
11915 Georgia Ave
Wheaton, MD 20902-2065
Phone (301) 942-4505
12111 Darnestown Rd
Gaithersburg, MD 20878-3211
Phone (301) 926-3095
12220 Rockville Pike
Rockville, MD 20852-1608
Phone (301) 881-0103
150 Monroe St
Rockville, MD 20850-2518
Phone (240) 253-8015
18045 Georgia Ave
Olney, MD 20832-2237
Phone (301) 774-8026
1805 Columbia Rd NW
Washington, DC 20009-2001
Phone (202) 797-4960
19777 Frederick Rd
Germantown, MD 20876-1307
Phone (240) 388-9314
20 University Blvd E
Silver Spring, MD 20901-2436
Phone (240) 863-2720
228 7TH St SE
Washington, DC 20003-4306
Phone (202) 698-0795
350 Fortune Ter
Suite D
Potomac, MD 20854-2910
Phone (443) 584-5323
37767 Market Dr
Charlotte Hall, MD 20622-3188
Phone (301) 290-1499
400 E Pratt St
FL 8
Baltimore, MD 21202-3180
Phone (305) 998-0546
4507 Stanford St
Bethesda, MD 20815-5205
Phone (443) 302-9258
6401 America Blvd
Hyattsville, MD 20782-2357
Phone (301) 276-8800
882 Muddy Branch Rd
Gaithersburg, MD 20878-2780
Phone (301) 216-1245
Hospital & facility affiliations
- Suburban Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 84.24 of 100
- Quality
- 75.4
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Science - Nursing, Nurse Practitioner, Registered Nurse
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| GSS Provita Services LLC | Current | Accepting new patients | |
| Kinstead Provider Group, P.a. | Family | Current | Accepting new patients |
| Medstar Medical Group - Southern Maryland LLC | Current | Accepting new patients | |
| Mep Health, LLC | Current | Accepting new patients | |
| Cep America LLC | Current | Accepting new patients | |
| Medstar Urgent Care LLC | Current | Accepting new patients | |
| Medstar Urgent Care, LLC | Current | Accepting new patients | |
| Cep America LLC | Current | Accepting new patients | |
| Medstar Urgent Care LLC | Current | Accepting new patients | |
| Emergency Medicine Associates, P.a.,P.C. | Current | Accepting new patients | |
| Emergency Medicine Associates P.a., P.C. | Current | Accepting new patients | |
| Cep America LLC | Current | Accepting new patients | |
| Medstar Urgent Care LLC | Current | Accepting new patients | |
| Ikon Health, LLC | Current | Accepting new patients | |
| Medstar Medical Group - Southern Maryland LLC | Current | Accepting new patients | |
| CTG LLC | Current | Accepting new patients | |
| Emergency Medicine Associates P.a., P.C. | Current | Accepting new patients | |
| Arnot Medical Services PLLC | Past | Accepting new patients |
Locations
1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 851-7423
2041 Georgia Ave NW
Washington, DC 20060
Phone (202) 865-3785
1805 Columbia Rd NW
Washington, DC 20009
Phone (202) 797-4950
2332 Galiano St
#2
Coral Gables, FL 33134
Phone (305) 998-0546
6317 York Rd
Baltimore, MD 21212
Phone (443) 777-6890
400 E Pratt St
Fl 8
Baltimore, MD 21202
Phone (410) 505-0521
22590 Shady Ct
California, MD 20619
Phone (301) 737-0500
12420 Milestone Center Dr
Ste 200
Germantown, MD 20876
Phone (336) 509-7515
24035 Three Notch Rd
Hollywood, MD 20636
Phone (301) 373-2588
11810 Grand Park Ave
Ste 500
Rockville, MD 20852
Phone (301) 276-5468
9901 Medical Center Dr
Rockville, MD 20850
Phone (301) 279-6000
3064 Waldorf Market Pl
Waldorf, MD 20603
Phone (301) 932-5960
11915 Georgia Ave
Wheaton, MD 20902
Phone (301) 942-4505
1701 N George Mason Dr
Arlington, VA 22205
Phone (703) 558-5000
100 Fairview Dr
Franklin, VA 23851
Phone (757) 516-1153
15225 Heathcote Blvd
Haymarket, VA 20169
Phone (571) 284-1000
8700 Sudley Rd
Manassas, VA 20110
Phone (703) 369-8000
Organizations & group practices 19
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Family Medicine Physician
- Baltimore, MD
- NPI 1568338473
-
- Internal Medicine Physician
- Hollywood, MD
- NPI 1831592211
-
- Urgent Care Clinic/Center
- Baltimore, MD
- NPI 1902175870
-
- Emergency Medicine Physician
- Washington, DC
- NPI 1073914396
-
- Emergency Medicine Physician
- Falls Church, VA
- NPI 1134117393
DC
-
- Internal Medicine Physician
- Dulles, VA
- NPI 1376917070
-
- Urgent Care Clinic/Center
- Gaithersburg, MD
- NPI 1033092259
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Bethesda, MD
- NPI 1205896446
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1501718400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1761696000000",
"number": "1497270110",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "11186 SEWICKLEY ST",
"city": "WALDORF",
"state": "MD",
"postal_code": "206012688",
"telephone_number": "240-222-2667"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "22590 SHADY CT",
"city": "CALIFORNIA",
"state": "MD",
"postal_code": "206195009",
"telephone_number": "301-737-0500"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SIMON",
"first_name": "GUILLANA",
"credential": "MSN FNP-BC, RN, CEN",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2017-08-03",
"last_updated": "2025-10-29",
"certification_date": "2025-10-29",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "MD",
"license": "R152798",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in California, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 29, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.