Active NPI
Jason Gadner Eliassaint, PMHNP-BC
- Psychiatric/Mental Health Nurse Practitioner
- Silver Spring, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatric/Mental Health Nurse Practitioner
- License
- R189215
- Practice address
- 10301 Georgia Ave Ste 203W
Silver Spring, MD 20902-5020 - Phone
- (240) 865-3135
- NPI assigned
- Jan 7, 2020
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Mental Health Clinic/Center (Including Community Mental Health Center) | 261QM0801X | |||
| Adult Mental Health Clinic/Center | 261QM0850X | |||
| Nurse Practitioner | 363L00000X | R189215 | MD | |
| Psychiatric/Mental Health Nurse Practitioner | 363LP0808X | R189215 | MD | Primary |
Addresses
Primary practice location
10301 Georgia Ave Ste 203W
Silver Spring, MD 20902-5020
Mailing address
167 Lyons Creek Dr
Laurel, MD 20708-3407
Phone (404) 992-1632
Other practice location 1
14504 Greenview Dr Ste 202
Laurel, MD 20708-3225
Phone (240) 377-0260
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in DC, MD
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2009
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
10301 Georgia Ave
Suite 203W
Silver Spring, MD 20902-5020
Phone (240) 865-3135
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| R189215 | MD | MD | Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Toller Enterprises LLC | Mental Health (Including Community Mental Health Center) | Current | Accepting new patients |
| Integrahealth LLC | Psychiatric/Mental Health | Current | Accepting new patients |
| Integrahealth LLC | Psychiatric/Mental Health | Current | Accepting new patients |
| Toller Enterprises LLC | Mental Health (Including Community Mental Health Center) | Current | Accepting new patients |
| Integrahealth LLC | Psychiatric/Mental Health | Current | Accepting new patients |
| Spiritual Healing | Psychiatric/Mental Health | Current | Accepting new patients |
| Spiritual Healing | Current | Accepting new patients | |
| Blue Sky Mental Health Clinic LLC | Mental Health (Including Community Mental Health Center) | Past | Accepting new patients |
| Kannan and Associates PC | Past | Accepting new patients |
Locations
1500 K St NW
Ste 200
Washington, DC 20005
Phone (667) 207-3552
2232 E Monument St
Baltimore, MD 21205
Phone (667) 207-3552
10 N Rock Glen Rd
Baltimore, MD 21229
Phone (410) 646-2100
5721 Grosvenor Ln
Bethesda, MD 20814
Phone (301) 530-1600
3210 Powder Mill Rd
Hyattsville, MD 20783
Phone (301) 937-3939
9722 Groffs Mill Dr
Owings Mills, MD 21117
Phone (410) 205-9255
200 Civic Ave
Salisbury, MD 21804
Phone (410) 749-1466
Organizations & group practices 11
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.
-
- Adult Mental Health Clinic/Center
- Silver Spring, MD
- NPI 1184204745
DC
-
- Psychiatric/Mental Health Nurse Practitioner
- Baltimore, MD
- NPI 1740049568
-
- Psychiatric/Mental Health Nurse Practitioner
- Baltimore, MD
- NPI 1821697533
DC, Mental Health (Including Community Mental Health Center)
-
- Mental Health Clinic/Center (Including Community Mental Health Center)
- Laurel, MD
- NPI 1467372623
Mental Health (Including Community Mental Health Center)
-
- Psychiatric/Mental Health Nurse Practitioner
- Forest Hill, MD
- NPI 1598524308
-
- Psychiatric/Mental Health Nurse Practitioner
- Baltimore, MD
- NPI 1932968856
-
- Pain Management Registered Nurse
- Baltimore, MD
- NPI 1982399218
-
- Pain Management Registered Nurse
- Baltimore, MD
- NPI 1821694084
Mental Health (Including Community Mental Health Center)
-
- Internal Medicine Physician
- Silver Spring, MD
- NPI 1225329956
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1578355200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1749772800000",
"number": "1972143915",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "167 LYONS CREEK DR",
"city": "LAUREL",
"state": "MD",
"postal_code": "207083407",
"telephone_number": "404-992-1632"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "10301 GEORGIA AVE STE 203W",
"city": "SILVER SPRING",
"state": "MD",
"postal_code": "209025020",
"telephone_number": "240-865-3135"
}
],
"practiceLocations": [
{
"address_1": "14504 Greenview Dr Ste 202",
"address_purpose": "LOCATION",
"city": "Laurel",
"state": "MD",
"postal_code": "207083225",
"country_code": "US",
"telephone_number": "240-377-0260",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ELIASSAINT",
"first_name": "JASON",
"middle_name": "GADNER",
"name_prefix": "Mr.",
"credential": "PMHNP-BC",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2020-01-07",
"last_updated": "2025-06-13",
"certification_date": "2025-06-13",
"status": "A"
},
"taxonomies": [
{
"code": "261QM0801X",
"taxonomy_group": "",
"desc": "Clinic/Center, Mental Health (Including Community Mental Health Center)",
"state": null,
"license": null,
"primary": false
},
{
"code": "261QM0850X",
"taxonomy_group": "",
"desc": "Clinic/Center, Adult Mental Health",
"state": null,
"license": null,
"primary": false
},
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": "MD",
"license": "R189215",
"primary": false
},
{
"code": "363LP0808X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Psychiatric/Mental Health",
"state": "MD",
"license": "R189215",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Silver Spring, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 13, 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.