Deena Eliana Merzel, M.D.

Primary specialty

Pediatric Gastroenterology PhysicianTaxonomy code 2080P0206X

License

308687 Issued in NY

Practice address

575 Underhill Blvd Ste 200
Syosset, NY 11791-3416

Phone

(516) 822-4404

NPI assigned

Apr 9, 2018

Last updated

Jul 22, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Dr. Deena Eliana Miller Former name

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Pediatric Medicine

Education

New York Medical College, 2018

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dmerzel191953@direct.optum.com

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.

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  Medicare reassignment NPD
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  • NPI 1053190595
  NPD
• Mount Kisco Medical Group

  • Hematology (Internal Medicine) Physician
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  • NPI 1952356362
  NPD (past)

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

{
    "created_epoch": "1523232000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753142400000",
    "number": "1881191690",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "575 UNDERHILL BLVD STE 200",
            "city": "SYOSSET",
            "state": "NY",
            "postal_code": "117913416"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "575 UNDERHILL BLVD STE 200",
            "city": "SYOSSET",
            "state": "NY",
            "postal_code": "117913416",
            "telephone_number": "516-822-4404"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "111 E 210th St",
            "address_purpose": "LOCATION",
            "city": "Bronx",
            "state": "NY",
            "postal_code": "104672401",
            "country_code": "US",
            "telephone_number": "718-741-2332",
            "fax_number": "718-515-5426",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "100 Woods Rd",
            "address_purpose": "LOCATION",
            "city": "Valhalla",
            "state": "NY",
            "postal_code": "105951530",
            "country_code": "US",
            "telephone_number": "914-493-7000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MERZEL",
        "first_name": "DEENA",
        "middle_name": "ELIANA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-04-09",
        "last_updated": "2025-07-22",
        "certification_date": "2025-07-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0206X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Gastroenterology",
            "state": "NY",
            "license": "308687",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "DEENA",
            "last_name": "MILLER",
            "middle_name": "ELIANA",
            "prefix": "DR.",
            "credential": "M.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Amy Mendolia, M.S.ED
• Mercyfirst
• Mercyfirst
• Mercyfirst
• Sylvia E Merila, LMT
• Mesibov and Altman LLP
• William J Mesibov, MD
• Samantha Messina
• Alyson Metzner, LCSW
• Susan Lynn Mianulli, MS

• Pediatric Gastroenterology Physician in Syosset, NY
• Providers in Syosset, NY by specialty
• Pediatric Gastroenterology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 22, 2025; 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.

Verify at the official NPI Registry.