Individual provider Active NPI

Summer Rhiannon Holden, PMHNP-BC

  • Psychiatric/Mental Health Nurse Practitioner
  • Los Angeles, CA
National Provider Identifier
1285827949
Registry record updated May 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
License
F403012 Issued in NY
Practice address
12301 Wilshire Blvd Ste 512
Los Angeles, CA 90025-1022
Phone
(888) 684-2779
NPI assigned
Aug 24, 2007
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 28, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Nurse Practitioner 363LP0808X F403012 NY Primary

Addresses

Primary practice location

12301 Wilshire Blvd Ste 512
Los Angeles, CA 90025-1022

Mailing address

12301 Wilshire Blvd Ste 512
Los Angeles, CA 90025-1022
Phone (888) 684-2779

Electronic endpoints 1

TypeEndpointUseAffiliation
Other URL happierliving.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH, CA, NY3 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
I20220817002138 OH Practitioner - Nurse Practitioner 8022491489 Reassigns benefits to 1 organization
I20230104002342 CA Practitioner - Nurse Practitioner 8022491489 Reassigns benefits to 1 organization
I20260617002875 NY Practitioner - Nurse Practitioner 8022491489 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Lee Side Wellness Associates, LLCGroup PAC ID 4587934823, 12 clinicians

Practice addresses (Care Compare)

3615 Socialville Foster Rd
Suite C
Mason, OH 45040-9054
Phone 51320419104

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
F403012NYMDPsychiatric/Mental Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Lee Side Wellness Associates, LLC Psychiatric/Mental Health CurrentSince May 1, 2022 Accepting new patients
Mellow Medical Inc a Professional Corporation CurrentSince Dec 22, 2022 Accepting new patients

Locations

12301 Wilshire Blvd
Ste 512
Los Angeles, CA 90025
Phone (833) 427-3566

5201 Great America Pkwy
Ste 320
Santa Clara, CA 95054
Phone (323) 968-6182

8235 Santa Monica Blvd
Ste 302
West Hollywood, CA 90046
Phone (310) 892-4284

5412 Courseview Dr
Ste 215
Mason, OH 45040
Phone (513) 204-1910

3615 Socialville Foster Rd
Ste C
Mason, OH 45040
Phone (513) 204-1910

Interoperability endpoints

  • Direct secure messaging: summer.wilson.3@9357.direct.athenahealth.com
  • Direct secure messaging: summer.wilson.2@9357.direct.athenahealth.com
  • FHIR API: https://api.platform.athenahealth.com/9357/brand/1/csg/1/fhir/r4
  • Direct secure messaging: summer.wilson.1@9357.direct.athenahealth.com

Organizations & group practices 3

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": "1187913600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779926400000",
    "number": "1285827949",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12301 WILSHIRE BLVD STE 512",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900251022",
            "telephone_number": "888-684-2779"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12301 WILSHIRE BLVD STE 512",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900251022",
            "telephone_number": "888-684-2779"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLDEN",
        "first_name": "SUMMER",
        "middle_name": "RHIANNON",
        "name_prefix": "Mrs.",
        "credential": "PMHNP-BC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-08-24",
        "last_updated": "2026-05-28",
        "certification_date": "2026-05-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "NY",
            "license": "F403012",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "OTHERS",
            "endpointTypeDescription": "Other URL",
            "endpoint": "happierliving.com",
            "affiliation": "Y",
            "endpointDescription": "Happier Living",
            "address_1": "31-00 47th Avenue Ste 3100",
            "city": "Long Island",
            "state": "NY",
            "country_code": "US",
            "postal_code": "111013013",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Los Angeles, CA

Sources for this page

Verify at the official NPI Registry.