Gunnar Mark Swierkowski

Primary specialty

PharmacistTaxonomy code 183500000X

License

067038 Issued in NY

Practice address

4638 Merrick Rd
Massapequa, NY 11758-6030

Phone

(516) 688-0488

Fax

(516) 688-0489

NPI assigned

Oct 2, 2020

Last updated

Oct 20, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Practice roles

Locations

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.

• Biltmore Family Pharmacy Inc.

  • Community/Retail Pharmacy
  • Massapequa, NY
  • NPI 1699622688
  NPD Authorized official
• GMS Family Pharmacy Inc.

  dba Claremont Family Pharmacy

  • Community/Retail Pharmacy
  • Bronx, NY
  • NPI 1316754294
  NPD Authorized official
• Abdel Chemists 2 Inc

  dba stv chemists 2

  • Community/Retail Pharmacy
  • Bronx, NY
  • NPI 1326445339
  NPD
• CVS Albany LLC

  dba CVS Pharmacy # 00230

  • Pharmacy
  • Oceanside, NY
  • NPI 1952409591
  NPD (past)
• CVS Albany LLC

  dba CVS Pharmacy #11486

  • Pharmacy
  • Brooklyn, RI
  • NPI 1679459481
  NPD (past)

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

{
    "created_epoch": "1601596800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1792454400000",
    "number": "1831796895",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "35 BREWSTER RD W",
            "city": "MASSAPEQUA",
            "state": "NY",
            "postal_code": "117588021",
            "telephone_number": "516-498-7817",
            "fax_number": "516-688-0489"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4638 MERRICK RD",
            "city": "MASSAPEQUA",
            "state": "NY",
            "postal_code": "117586030",
            "telephone_number": "516-688-0488",
            "fax_number": "516-688-0489"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SWIERKOWSKI",
        "first_name": "GUNNAR",
        "middle_name": "MARK",
        "name_prefix": "Dr.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-10-02",
        "last_updated": "2026-10-20",
        "certification_date": "2026-10-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "183500000X",
            "taxonomy_group": "",
            "desc": "Pharmacist",
            "state": "NY",
            "license": "067038",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Manisha Suri, DDS
• Susan E. Young OT PC
• SVR Pediatric OT PC
• Billie Marie Sweeney, TEACHER
• Shannon Marie Swierat, LMSW
• Sydnie Tamberino, LMT, RYT
• Maria Tancredi, LAC. / LMT
• Nicole Marie Tancredi
• Madison Rae Tare, MSW
• Laura Tarone, OTR/L

• Pharmacist in Massapequa, NY
• Providers in Massapequa, NY by specialty
• Pharmacist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.