Organization Active NPI

Harmony Medical Services of New Jersey LLC

Doing business as Harmonycares Medical Group

  • Family Medicine Physician
  • Montclair, NJ
National Provider Identifier
1649873183
Registry record updated Sep 30, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
Legal business name
HARMONY MEDICAL SERVICES OF NEW JERSEY LLC
Doing business as
Harmonycares Medical Group
Practice address
28 Valley Rd # 148
Montclair, NJ 07042-2709
Phone
(973) 707-3911
Fax
(201) 918-4037
NPI assigned
Nov 18, 2020
Last updated
Sep 30, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 30, 2025

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

Authorized official

Name
Dr. Jonathan Feldstein, MD
Title
Owner
Phone
(248) 824-6600

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207Q00000X Primary
Internal Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207R00000X
Pediatrics PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 208000000X
General Practice PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 208D00000X

Addresses

Primary practice location

28 Valley Rd # 148
Montclair, NJ 07042-2709

Mailing address

PO Box 40409
Belfast, ME 04915-1255
Phone (973) 707-3911

Other names 1

  • Harmonycares Medical Group Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NJ

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20220912000425 NJ Part B Supplier - Clinic/Group Practice 0446635510 Receives reassigned benefits from 97 practitioners
1 other NPI on this enrollment
Practice locations: Montclair, NJ; Toms River, NJ; Newark, NJ

Other NPIs on the same Medicare enrollment 1

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

National Provider Directory

National Provider Directory
Tax ID family
Vpa Diagnsotics45 organizations share this tax ID, including this one

Other organizations with this tax ID 44

Organizations that report the same tax identification number in the National Provider Directory.

View all 44

Locations

1 Riverfront Plz
Ste 300
Newark, NJ 07102
Phone (201) 273-7047

1268 Route 37 W
Ste 1
Toms River, NJ 08755
Phone (732) 602-4480

Practitioners & affiliated clinicians

Practitioners 102

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 102

NPI Registry JSON

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

{
    "created_epoch": "1605657600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1759190400000",
    "number": "1649873183",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 40409",
            "city": "BELFAST",
            "state": "ME",
            "postal_code": "049151255",
            "telephone_number": "973-707-3911",
            "fax_number": "855-618-6655"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "28 VALLEY RD # 148",
            "city": "MONTCLAIR",
            "state": "NJ",
            "postal_code": "070422709",
            "telephone_number": "973-707-3911",
            "fax_number": "201-918-4037"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "HARMONY MEDICAL SERVICES OF NEW JERSEY LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2020-11-18",
        "last_updated": "2025-09-30",
        "certification_date": "2025-09-30",
        "status": "A",
        "authorized_official_last_name": "FELDSTEIN",
        "authorized_official_first_name": "JONATHAN",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "248-824-6600",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Pediatrics",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "General Practice",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Harmonycares Medical Group",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Montclair, NJ

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 30, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.