Individual provider Active NPI

Guillana Simon, MSN FNP-BC, RN, CEN

  • Family Nurse Practitioner
  • California, MD
National Provider Identifier
1497270110
Registry record updated Oct 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
R152798 Issued in MD
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

Updated by the provider on Oct 29, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
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, VA3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20171114001139 MD Practitioner - Nurse Practitioner 4486910197 Reassigns benefits to 4 organizations
I20180824001610 DC Practitioner - Nurse Practitioner 4486910197 Reassigns benefits to 7 organizations
I20220314000235 VA Practitioner - Nurse Practitioner 4486910197 Reassigns benefits to 1 organization

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
CTG LLCGroup PAC ID 9830499227, 2 clinicians
Medstar Urgent Care LLCGroup PAC ID 9335303155, shared by 36 NPIs, 300 clinicians
Kinstead Provider Group, P.a.Group PAC ID 1850885104, 4 clinicians

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 Hospital, Bethesda, MD, CCN 210022

Merit-based Incentive Payment System (MIPS)

Final score
84.24 of 100Reported as group
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

OrganizationSpecialtyStatusNew patients
GSS Provita Services LLC Current Accepting new patients
Kinstead Provider Group, P.a. Family CurrentSince Dec 17, 2025 Accepting new patients
Medstar Medical Group - Southern Maryland LLC Current Accepting new patients
Mep Health, LLC CurrentSince Jan 1, 2023 Accepting new patients
Cep America LLC CurrentSince Aug 1, 2023 Accepting new patients
Medstar Urgent Care LLC CurrentSince Jul 15, 2018 Accepting new patients
Medstar Urgent Care, LLC Current Accepting new patients
Cep America LLC Current Accepting new patients
Medstar Urgent Care LLC CurrentSince Jul 15, 2018 Accepting new patients
Emergency Medicine Associates, P.a.,P.C. CurrentSince Mar 1, 2022 Accepting new patients
Emergency Medicine Associates P.a., P.C. CurrentSince Mar 1, 2022 Accepting new patients
Cep America LLC CurrentSince Aug 1, 2023 Accepting new patients
Medstar Urgent Care LLC Current Accepting new patients
Ikon Health, LLC CurrentSince Dec 29, 2023 Accepting new patients
Medstar Medical Group - Southern Maryland LLC CurrentSince Sep 18, 2017 Accepting new patients
CTG LLC CurrentSince May 13, 2025 Accepting new patients
Emergency Medicine Associates P.a., P.C. CurrentSince Mar 1, 2022 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.

View all 19

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

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

Verify at the official NPI Registry.