NPIMap

Individual provider Active NPI

Cean Mahmud, M.D.

  • Family Medicine Physician
  • Riverhead, NY
National Provider Identifier
1285165134
Registry record updated Apr 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
305318 Issued in NY
Practice address
31 Main Rd Ste 1
Riverhead, NY 11901-1953
Phone
(631) 722-4400
NPI assigned
Mar 22, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 18, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 305318 NY
Family Medicine Physician 207Q00000X 305318 NY Primary
Student in an Organized Health Care Education/Training Program 390200000X

Addresses

Primary practice location

31 Main Rd Ste 1
Riverhead, NY 11901-1953

Mailing address

70 N Country Rd Ste 105
Port Jefferson, NY 11777-2161
Phone (631) 392-8847

Other practice location 1

70 N Country Rd Ste 105
Port Jefferson, NY 11777-2161
Phone (631) 392-8847

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20200911002596 NY Practitioner - Family Practice 2961748090 Reassigns benefits to 3 organizations
I20260216000599 NY Practitioner - Hospitalist 2961748090 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hospitalist
Education
Other, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
New York UniversityGroup PAC ID 1355232422, 5,925 clinicians
North Shore-Lij Medical PCGroup PAC ID 3375701568, 6,374 clinicians
Peconic Bay Primary Medical CareGroup PAC ID 7113817602, 72 clinicians

Practice addresses (Care Compare)

111 Broadway
New York, NY 10006-1901
Phone (212) 263-9700

300 Community Dr
Manhasset, NY 11030-3816

300 Community Dr LL
Manhasset, NY 11030-3816
Phone (516) 562-2229

301 E Main St
Bay Shore, NY 11706-8408

31 Main Rd
Suite 1
Riverhead, NY 11901-1953
Phone (631) 722-4400

330 Community Dr
Manhasset, NY 11030-3816
Phone (516) 708-2550

34 Commerce Ave
Riverhead, NY 11901-3118
Phone (631) 727-1600

350 Community Dr
Manhasset, NY 11030-3816
Phone (516) 562-3845

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
93.07 of 100Reported as apm
Quality
79.77
Promoting interoperability
88.77
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
93.07 of 100Reported as apm
Quality
79.77
Promoting interoperability
88.77
Improvement activities
40

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
North Shore - Lij Medical PC CurrentSince Dec 19, 2020 Accepting new patients
Peconic Bay Primary Medical Care CurrentSince Jul 1, 2023 Accepting new patients
Central Suffolk Hospital CurrentSince Jan 1, 2023 Accepting new patients
North Shore-Lij Medical PC Family Medicine CurrentSince Dec 19, 2020 Accepting new patients
New York University Pediatrics CurrentSince Feb 6, 2026 Accepting new patients
New York University CurrentSince Feb 6, 2026 Accepting new patients
Central Suffolk Hosptial CurrentSince Jan 1, 2023 Accepting new patients

Locations

300 Community Dr
Plandome, NY 11030

70 N Country Rd
Ste 105
Prt Jefferson, NY 11777
Phone (631) 392-8847

1 Heroes Way
Riverhead, NY 11901
Phone (631) 548-6000

31 Main Rd
Ste 1
Riverhead, NY 11901
Phone (631) 298-4479

34 Commerce Ave
Riverhead, NY 11901
Phone (631) 591-3000

972 Brush Hollow Rd
Westbury, NY 11590

Networks

  • Healthfirst Medicare Network H1722
  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H9678

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
  • Direct secure messaging: cmahmud24447@northwell.direct-ci.com

Organizations & group practices 7

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 10

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": "1490140800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776470400000",
    "number": "1285165134",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "70 N COUNTRY RD STE 105",
            "city": "PORT JEFFERSON",
            "state": "NY",
            "postal_code": "117772161",
            "telephone_number": "631-392-8847"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "31 MAIN RD STE 1",
            "city": "RIVERHEAD",
            "state": "NY",
            "postal_code": "119011953",
            "telephone_number": "631-722-4400"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "70 N Country Rd Ste 105",
            "address_purpose": "LOCATION",
            "city": "Port Jefferson",
            "state": "NY",
            "postal_code": "117772161",
            "country_code": "US",
            "telephone_number": "631-392-8847",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAHMUD",
        "first_name": "CEAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-03-22",
        "last_updated": "2026-04-18",
        "certification_date": "2026-04-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "305318",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NY",
            "license": "305318",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Riverhead, NY

Sources for this page

Verify at the official NPI Registry.