Individual provider Active NPI

Ernest Massalla

  • Psychiatric/Mental Health Nurse Practitioner
  • Silver Spring, MD
National Provider Identifier
1336859610
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
License
R224711 Issued in MD
Practice address
8455 Colesville Rd Ste 755
Silver Spring, MD 20910-3315
Phone
(301) 298-7793
Fax
(301) 259-3818
NPI assigned
Nov 28, 2022
Last updated
Sep 11, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Nurse Practitioner 363LP0808X NP1043299 DC
Psychiatric/Mental Health Nurse Practitioner 363LP0808X R224711 MD Primary

Addresses

Primary practice location

8455 Colesville Rd Ste 755
Silver Spring, MD 20910-3315

Mailing address

4005 Postgate Ter Apt 102
Silver Spring, MD 20906-6009
Phone (240) 277-6216

Other practice location 1

4005 Postgate Ter Apt 102
Silver Spring, MD 20906-6009
Phone (240) 277-6216

Electronic endpoints 1

TypeEndpointUseAffiliation
Other URL N/A

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, MD2 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
I20250508001966 DC Practitioner - Nurse Practitioner 1254858616 Reassigns benefits to 1 organization
I20250508003608 MD Practitioner - Nurse Practitioner 1254858616 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Columbia Associates in Psychiatry PCGroup PAC ID 7113165739, 127 clinicians

Practice addresses (Care Compare)

8455 Colesville Rd
Silver Spring, MD 20910-3315
Phone (301) 298-7793

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Columbia Associates in Psychiatry PC Psychiatric/Mental Health CurrentSince Apr 14, 2025 Accepting new patients
Columbia Associates in Psychiatry PC Psychiatric/Mental Health CurrentSince Nov 8, 2025 Accepting new patients

Locations

10400 Little Patuxent Pkwy
Columbia, MD 21044
Phone (321) 422-7157

8455 Colesville Rd
Ste 755
Silver Spring, MD 20910
Phone (240) 617-1399

8455 Colesville Rd
Silver Spring, MD 20910
Phone (301) 298-7793

2501 N Glebe Rd
Ste 303
Arlington, VA 22207
Phone (703) 485-9519

2960 Sleepy Hollow Rd
Falls Church, VA 22044
Phone (703) 304-7764

Organizations & group practices 2

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1669593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1336859610",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4005 POSTGATE TER APT 102",
            "city": "SILVER SPRING",
            "state": "MD",
            "postal_code": "209066009",
            "telephone_number": "240-277-6216"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8455 COLESVILLE RD STE 755",
            "city": "SILVER SPRING",
            "state": "MD",
            "postal_code": "209103315",
            "telephone_number": "301-298-7793",
            "fax_number": "301-259-3818"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4005 Postgate Ter Apt 102",
            "address_purpose": "LOCATION",
            "city": "Silver Spring",
            "state": "MD",
            "postal_code": "209066009",
            "country_code": "US",
            "telephone_number": "240-277-6216",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASSALLA",
        "first_name": "ERNEST",
        "name_prefix": "Mr.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-11-28",
        "last_updated": "2025-09-11",
        "certification_date": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "DC",
            "license": "NP1043299",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "MD",
            "license": "R224711",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "OTHERS",
            "endpointTypeDescription": "Other URL",
            "endpoint": "N/A",
            "affiliation": "N",
            "address_1": "4005 Postgate Ter Apt 102",
            "city": "Silver Spring",
            "state": "MD",
            "country_code": "US",
            "postal_code": "209066009",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Silver Spring, MD

Sources for this page

Verify at the official NPI Registry.