NPIMap

Individual provider Active NPI

Mark Gelfand, MD

  • Internal Medicine Physician
  • Brooklyn, NY
National Provider Identifier
1801849658
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
211150 Issued in NY
Practice address
415 Oceanview Ave
Brooklyn, NY 11235
Phone
(718) 934-4842
Fax
(718) 616-0165
NPI assigned
May 19, 2006
Sex
Male
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
Internal Medicine Physician 207R00000X 211150 NY Primary

Addresses

Primary practice location

415 Oceanview Ave
Brooklyn, NY 11235

Mailing address

415 Oceanview Ave
Brooklyn, NY 11235
Phone (718) 934-4842

Other identifiers 1

IdentifierTypeStateIssuer
01892906MedicaidNY

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
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
I20060428000117 NY Practitioner - Internal Medicine 9739111212 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services

Practice addresses (Care Compare)

415 Ocean View Ave
Brooklyn, NY 11235-6828
Phone (718) 934-4842

415 Oceanview Ave
Ground Floor
Brooklyn, NY 11235-6828

Hospital & facility affiliations

  • Girling Health Care of New York Home health agency, Brooklyn, NY, CCN 337243
  • Americare Certified Special Services, Inc Chha Home health agency, Brooklyn, NY, CCN 337290
  • Shining Star Home Health Care Home health agency, Brooklyn, NY, CCN 337440
  • Prime Home Health Services, LLC Home health agency, Brooklyn, NY, CCN 337190
  • Revival Home Health Care Home health agency, Staten Island, NY, CCN 337299
  • NYU Langone Hospitals Hospital, New York, NY, CCN 330214
  • Maimonides Medical Center Hospital, Brooklyn, NY, CCN 330194

Merit-based Incentive Payment System (MIPS)

Final score
23.93 of 100Reported as individual
Quality
0
Improvement activities
0
Cost
79.78

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
211150NYMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Star Medical Offices P.C. Internal Medicine CurrentSince Jan 1, 2001 Accepting new patients
Relief & Solutions Counseling Past Accepting new patients

Locations

415 Ocean View Ave
Brooklyn, NY 11235
Phone (718) 769-0997

Organizations & group practices 2

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 14

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

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1147996800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1801849658",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "415 OCEANVIEW AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "11235",
            "telephone_number": "718-934-4842",
            "fax_number": "718-616-0165"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "415 OCEANVIEW AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "11235",
            "telephone_number": "718-934-4842",
            "fax_number": "718-616-0165"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GELFAND",
        "first_name": "MARK",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-19",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "211150",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01892906",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Brooklyn, NY

Sources for this page

Verify at the official NPI Registry.