Individual provider Active NPI

Eliana Assimakopoulos, PAC

  • Physician Assistant
  • Olney, MD
National Provider Identifier
1699734384
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
C0001340 Issued in MD
Practice address
18101 Prince Philip Drive
Olney, MD 20832
Phone
(301) 774-8900
Fax
(301) 570-8574
NPI assigned
Mar 21, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X C0001340 MD Primary

Addresses

Primary practice location

18101 Prince Philip Drive
Olney, MD 20832

Mailing address

1300 Piccard Drive
Ste 202
Rockville, MD 20850-4303
Phone (301) 921-7900

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 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 2

Enrollment IDStateProvider typePAC IDDetails
I20101105000767 MD Practitioner - Physician Assistant 3173419017 Reassigns benefits to 3 organizations
I20111104000101 DC Practitioner - Physician Assistant 3173419017 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Medstar Urgent Care LLCGroup PAC ID 9335303155, 300 clinicians

Practice addresses (Care Compare)

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

18045 Georgia Ave
Olney, MD 20832-2237
Phone (301) 774-8026

19777 Frederick Rd
Germantown, MD 20876-1307
Phone (240) 388-9314

20 University Blvd E
Silver Spring, MD 20901-2436
Phone (240) 863-2720

201 Shorebird St
Suite B
Frederick, MD 21701-1962
Phone (240) 422-8112

3064 Waldorf Market PL
Waldorf, MD 20603-4871
Phone (301) 932-5960

350 Fortune Ter
Suite D
Potomac, MD 20854-2910
Phone (443) 584-5323

4507 Stanford St
Bethesda, MD 20815-5205
Phone (443) 302-9258

6317 York Rd
Baltimore, MD 21212-2310
Phone (443) 777-6890

8605 Ridgelys Choice Dr
Nottingham, MD 21236-2953
Phone (410) 248-2310

882 Muddy Branch Rd
Gaithersburg, MD 20878-2780
Phone (301) 216-1245

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
C0001340MDMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Urgent Care LLC CurrentSince Dec 1, 2020 Accepting new patients
Medstar Urgent Care, LLC CurrentSince Dec 1, 2020 Accepting new patients
Alexandria Springfield Emergency Physicians PC CurrentSince May 24, 2013 Accepting new patients
Alexandria Springfield Emergency Physicians PC CurrentSince May 24, 2013 Accepting new patients
Emergency Medicine Associates P.a., P.C. CurrentSince Jun 8, 1998 Accepting new patients
Emergency Medicine Associates, PA CurrentSince Nov 18, 1998 Accepting new patients
Medstar Urgent Care LLC CurrentSince Dec 1, 2020 Accepting new patients
Emergency Medicine Associates, PA CurrentSince Jun 8, 1998 Accepting new patients
Mid-Atlantic Critical Care Services,L.L.C. Past Accepting new patients
Emergency Medicine Associates P.a., P.C. Past Accepting new patients

Locations

6317 York Rd
Baltimore, MD 21212
Phone (443) 777-6890

7698 Dorchester Blvd
Ste 204
Hanover, MD 21076

18101 Prince Philip Dr
Olney, MD 20832
Phone (301) 774-8618

12220 Rockville Pike
Rockville, MD 20852
Phone (301) 468-6483

350 Fortune Ter
Ste D
Rockville, MD 20854
Phone (301) 309-0016

3064 Waldorf Market Pl
Waldorf, MD 20603
Phone (301) 932-5960

3350 Crain Hwy
Waldorf, MD 20603
Phone (443) 332-4260

200 Memorial Ave
Westminster, MD 21157
Phone (410) 848-3000

11915 Georgia Ave
Wheaton, MD 20902
Phone (301) 942-4505

4320 Seminary Rd
Alexandria, VA 22304
Phone (703) 504-3000

1701 N George Mason Dr
Arlington, VA 22205
Phone (703) 558-5000

15225 Heathcote Blvd
Haymarket, VA 20169
Phone (571) 284-1000

Organizations & group practices 12

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.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1142899200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1699734384",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1300 PICCARD DRIVE",
            "address_2": "STE 202",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208504303",
            "telephone_number": "301-921-7900",
            "fax_number": "301-921-7915"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18101 PRINCE PHILIP DRIVE",
            "city": "OLNEY",
            "state": "MD",
            "postal_code": "20832",
            "telephone_number": "301-774-8900",
            "fax_number": "301-570-8574"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ASSIMAKOPOULOS",
        "first_name": "ELIANA",
        "credential": "PAC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-03-21",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MD",
            "license": "C0001340",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Olney, MD

Sources for this page

Verify at the official NPI Registry.