NPIMap

Individual provider Active NPI

Gregory Tiesi, MD

  • Surgical Oncology Physician
  • Neptune, NJ
National Provider Identifier
1942464003
Registry record updated Jul 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgical Oncology PhysicianTaxonomy code 2086X0206X
License
25MA09135400 Issued in NJ
Practice address
19 Davis Ave FL 2
Neptune, NJ 07753-4488
Phone
(732) 776-4770
NPI assigned
Jul 17, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 29, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Surgical Oncology Physician 2086X0206X 25MA09135400 NJ Primary

Addresses

Primary practice location

19 Davis Ave FL 2
Neptune, NJ 07753-4488

Mailing address

19 Davis Ave FL 2
Neptune, NJ 07753-4488
Phone (732) 776-4770

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NJ
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220808003514 NJ Practitioner - Surgical Oncology 7315239811 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Surgical Oncology
Education
Other, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1 Riverview PLZ
Red Bank, NJ 07701-1864
Phone (732) 264-1132

1140 Route 72 W
Manahawkin, NJ 08050-2412
Phone (609) 597-6011

1301 Route 72 W
Manahawkin, NJ 08050-2483

19 Davis Ave
Neptune, NJ 07753-4488

1944 Route 33
Neptune, NJ 07753
Phone (732) 776-3787

1945 Route 33
Neptune, NJ 07753

30 Prospect Ave
Hackensack, NJ 07601-1915

3600 Route 66
FL 3
Neptune, NJ 07753

425 Jack Martin Blvd
Brick, NJ 08724-7732
Phone (732) 836-4504

65 James St
Edison, NJ 08820-3947
Phone (732) 321-7901

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Melanoma (skin cancer) excision14
Skin biopsy1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Christiana Care Health Services, Inc Current Accepting new patients
Hackensack Meridian Health Medical Group - Specialty Care PC CurrentSince Jan 1, 2023 Accepting new patients
Hackensack Meridian Health Medical Group - Complex Care PC Surgery CurrentSince Aug 1, 2022 Accepting new patients
Hackensack Meridian Health Medical Group - Specialty Care PC CurrentSince Jan 1, 2023 Accepting new patients

Locations

4701 Ogletown Stanton Rd
Ste 2200
Newark, DE 19713
Phone (302) 366-1200

4755 Ogletown Stanton Rd
Newark, DE 19718
Phone (302) 733-1700

1610 Route 88
Ste 203
Brick, NJ 08724
Phone (732) 268-8470

30 Prospect Ave
Hackensack, NJ 07601
Phone (201) 488-0066

1944 State Route 33
Neptune, NJ 07753
Phone (732) 776-3787

19 Davis Ave
#2
Neptune, NJ 07753

19 Davis Ave
Fl 2
Neptune City, NJ 07753
Phone (732) 528-0760

40 Bey Lea Rd
Ste A202
Toms River, NJ 08753
Phone (732) 367-1535

40 Bey Lea Rd
Ste 202
Toms River, NJ 08753
Phone (732) 240-4466

1945 State Route 33
Wall Township, NJ 07753
Phone (732) 776-2333

19 Davis Ave
Wall Township, NJ 07753
Phone (732) 776-4551

Interoperability endpoints

  • Direct secure messaging: gregory.tiesi@direct.hackensackmeridian.org
  • FHIR API: https://fhir4.healow.com/fhir/r4/IHJHBD

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.

Hospital & facility affiliations 12

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1216252800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753747200000",
    "number": "1942464003",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "19 DAVIS AVE FL 2",
            "city": "NEPTUNE",
            "state": "NJ",
            "postal_code": "077534488",
            "telephone_number": "732-776-4770"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19 DAVIS AVE FL 2",
            "city": "NEPTUNE",
            "state": "NJ",
            "postal_code": "077534488",
            "telephone_number": "732-776-4770"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIESI",
        "first_name": "GREGORY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-07-17",
        "last_updated": "2025-07-29",
        "certification_date": "2025-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086X0206X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Oncology",
            "state": "NJ",
            "license": "25MA09135400",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Neptune, NJ

Sources for this page

Verify at the official NPI Registry.