On Call Treatment, LLC

Primary specialty

Psychiatric HospitalTaxonomy code 283Q00000X

Legal business name

ON CALL TREATMENT, LLC

Doing business as

EVOKE WELLNESS WALTHAM

Practice address

564 Main St Ste 100
Waltham, MA 02452-5516

Phone

(617) 909-5283

Fax

(954) 990-6305

NPI assigned

Aug 2, 2020

Organization subpart

No

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

Authorized official

Name

Ms. Sherita Sherita

Title

Manager

Phone

(954) 993-2040

Specialties & licenses 4

Addresses

Other names 1

• EVOKE WELLNESS WALTHAM Doing business as

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• David Kashan, DO

  • Psychiatry Physician
  • Lima, OH
  • NPI 1225528334
  NPD (past)

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

{
    "created_epoch": "1596326400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1784592000000",
    "number": "1073123303",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "564 MAIN ST STE 100",
            "city": "WALTHAM",
            "state": "MA",
            "postal_code": "024525516",
            "telephone_number": "617-909-5283"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "564 MAIN ST STE 100",
            "city": "WALTHAM",
            "state": "MA",
            "postal_code": "024525516",
            "telephone_number": "617-909-5283",
            "fax_number": "954-990-6305"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ON CALL TREATMENT, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2020-08-02",
        "last_updated": "2026-07-21",
        "certification_date": "2026-07-21",
        "status": "A",
        "authorized_official_last_name": "SHERITA",
        "authorized_official_first_name": "SHERITA",
        "authorized_official_title_or_position": "MANAGER",
        "authorized_official_telephone_number": "954-993-2040",
        "authorized_official_name_prefix": "Ms."
    },
    "taxonomies": [
        {
            "code": "261QM1300X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Multi-Specialty",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QR0405X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Rehabilitation, Substance Use Disorder",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "283Q00000X",
            "taxonomy_group": "",
            "desc": "Psychiatric Hospital",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "324500000X",
            "taxonomy_group": "",
            "desc": "Substance Abuse Rehabilitation Facility",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "EVOKE WELLNESS WALTHAM",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Chima O Ohaegbulam, MD
• Fernanda Chaves Ohannessian
• Serena Ohanyan, PHARMD, RPH
• Tutu Okundaye
• Angel Olmo
• Onco Pharmaceutical Services of Ma, LLC
• Oncomed Pharmaceutical Services of Ma, LLC
• Oped, Inc.
• Oped, LLC
• Optum Palliative and Hospice Care, Inc.

• Psychiatric Hospital in Waltham, MA
• Providers in Waltham, MA by specialty
• Psychiatric Hospital in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• 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.

Verify at the official NPI Registry.