Active NPI
Melissa Jane Tiedemann, RPA-C
- Medical Physician Assistant
- Bellmore, NY
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Medical Physician Assistant
- License
- 008301
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2001
- Medicare assignment
- May accept Medicare assignment
- Group practices
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
| License | State | Type | Specialty |
|---|---|---|---|
| 008301 | NY | MD | Medical Physician Assistant |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Optum Medical Care, P.C. | Current | 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
- 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.
-
- Urgent Care Clinic/Center
- Jericho, NY
- NPI 1285975797
-
- Cardiovascular Disease Physician
- Mount Kisco, NY
- NPI 1982643003
-
- Durable Medical Equipment & Medical Supplies
- New Hyde Park, NY
- NPI 1053190595
-
- Multi-Specialty Clinic/Center
- Bellmore, NY
- NPI 1134119928
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- 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.