Individual provider Active NPI

Melissa Jane Tiedemann, RPA-C

  • Medical Physician Assistant
  • Bellmore, NY
National Provider Identifier
1306837109
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
008301 Issued in NY
Practice address
2750 Merrick Rd
Bellmore, NY 11710-5720
Phone
(516) 409-2000
Fax
(516) 409-2720
NPI assigned
Oct 31, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X 008301 NY Primary

Addresses

Primary practice location

2750 Merrick Rd
Bellmore, NY 11710-5720

Mailing address

2800 Marcus Ave
New Hyde Park, NY 11042-1113
Phone (516) 622-6000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
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 1

Enrollment IDStateProvider typePAC IDDetails
I20090309000001 NY Practitioner - Physician Assistant 0143386607 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2001
Medicare assignment
May accept Medicare assignment
Group practices
Optum Urgent Care PLLCGroup PAC ID 8628299518, 68 clinicians

Practice addresses (Care Compare)

1049 Morris Park Ave
Bronx, NY 10461-1410
Phone (929) 777-9082

148 Sunrise Hwy
West Islip, NY 11795-2012
Phone (631) 620-3580

1601 3Rd Ave
New York, NY 10128-3416
Phone (646) 692-6272

16450 Crossbay Blvd
Howard Beach, NY 11414-3749
Phone (718) 848-8412

339 Main St
Huntington, NY 11743-6958
Phone (631) 470-9000

555 N Broadway
Jericho, NY 11753-2134
Phone (516) 597-5070

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
008301NYMDMedical Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Optum Medical Care, P.C. CurrentSince Sep 1, 2022 Accepting new patients
South Nassau Primary Medical Care PC Past Accepting new patients

Locations

90 S Bedford Rd
Mount Kisco, NY 10549
Phone (914) 242-1050

110 S Bedford Rd
Mount Kisco, NY 10549
Phone (763) 910-9192

Interoperability endpoints

  • Direct secure messaging: mtiedemann19487@direct.optum.com

Organizations & group practices 4

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": "1130716800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1306837109",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2800 MARCUS AVE",
            "city": "NEW HYDE PARK",
            "state": "NY",
            "postal_code": "110421113",
            "telephone_number": "516-622-6000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2750 MERRICK RD",
            "city": "BELLMORE",
            "state": "NY",
            "postal_code": "117105720",
            "telephone_number": "516-409-2000",
            "fax_number": "516-409-2720"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIEDEMANN",
        "first_name": "MELISSA",
        "middle_name": "JANE",
        "name_prefix": "Mrs.",
        "credential": "RPA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-10-31",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "NY",
            "license": "008301",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Bellmore, NY

Sources for this page

Verify at the official NPI Registry.