Individual provider Active NPI

Nisarg R Desai, MD

  • Medical Oncology Physician
  • Rehoboth Beach, DE
National Provider Identifier
1174768956
Registry record updated Jan 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
C1-0011772 Issued in DE
Practice address
18947 John J Williams Hwy Unit 101
Rehoboth Beach, DE 19971-4480
Phone
(302) 645-3770
Fax
(302) 645-5718
NPI assigned
Dec 9, 2008
Last updated
Jan 19, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 19, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X C1-0011772 DE
Medical Oncology Physician 207RX0202X C1-0011772 DE Primary

Addresses

Primary practice location

18947 John J Williams Hwy Unit 101
Rehoboth Beach, DE 19971-4480

Mailing address

1515 Savannah Rd FL 2
Lewes, DE 19958-1675
Phone (302) 645-3499

Other practice location 1

32750 Roxana Rd
Millville, DE 19967-6980
Phone (302) 645-3770

Other practice location 2

424 Savannah Rd
Lewes, DE 19958-1462
Phone (302) 645-3499

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20160831000116 DE Practitioner - Hematology/OncologyPractitioner - Internal Medicine 4587890611 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
Other, 2007
Medicare assignment
May accept Medicare assignment
Group practices
Beebe Physician Network Inc.Group PAC ID 5496744864, 301 clinicians
Beebe Medical Center IncGroup PAC ID 8921917972, 30 clinicians

Practice addresses (Care Compare)

18947 John J Williams Hwy
Tunnel Cancer Center
Rehoboth Beach, DE 19971-4480
Phone (302) 645-3770

424 Savannah Rd
Lewes, DE 19958-1462
Phone (302) 645-3300

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
80 of 100Reported as group
Quality
62.88
Promoting interoperability
94
Improvement activities
40
Cost
75.47

Merit-based Incentive Payment System (MIPS)

Final score
75 of 100Reported as individual

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
C1-0011772DEMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Beebe Physician Network Inc. CurrentSince Jun 2, 2020 Accepting new patients
Beebe Medical Center, Inc. Medical Oncology CurrentSince Aug 15, 2016 Accepting new patients
Beebe Physician Network, Inc. PastSince Sep 17, 2023 Accepting new patients

Locations

1515 Savannah Rd
Fl 2
Lewes, DE 19958

424 Savannah Rd
Lewes, DE 19958
Phone (302) 441-1078

32550 Docs Pl
Unit 2
Millville, DE 19967
Phone (302) 539-4302

32750 Roxana Rd
Millville, DE 19967
Phone (302) 645-3770

18947 John J Williams Hwy
Rehoboth Beach, DE 19971
Phone (302) 645-3010

18947 John J Williams Hwy
Unit 101
Rehoboth Beach, DE 19971
Phone (302) 645-3770

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/6835/brand/1/csg/1/fhir/r4
  • Direct secure messaging: ndesai22771@beebehealth.direct-ci.com

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

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": "1228780800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768780800000",
    "number": "1174768956",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1515 SAVANNAH RD FL 2",
            "city": "LEWES",
            "state": "DE",
            "postal_code": "199581675",
            "telephone_number": "302-645-3499",
            "fax_number": "302-644-4830"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18947 JOHN J WILLIAMS HWY UNIT 101",
            "city": "REHOBOTH BEACH",
            "state": "DE",
            "postal_code": "199714480",
            "telephone_number": "302-645-3770",
            "fax_number": "302-645-5718"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "32750 Roxana Rd",
            "address_purpose": "LOCATION",
            "city": "Millville",
            "state": "DE",
            "postal_code": "199676980",
            "country_code": "US",
            "telephone_number": "302-645-3770",
            "fax_number": "302-645-5718",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "424 Savannah Rd",
            "address_purpose": "LOCATION",
            "city": "Lewes",
            "state": "DE",
            "postal_code": "199581462",
            "country_code": "US",
            "telephone_number": "302-645-3499",
            "fax_number": "302-644-4830",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DESAI",
        "first_name": "NISARG",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-12-09",
        "last_updated": "2026-01-19",
        "certification_date": "2026-01-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "DE",
            "license": "C1-0011772",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "DE",
            "license": "C1-0011772",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Rehoboth Beach, DE

Sources for this page

Verify at the official NPI Registry.