Marissa Ann Sylvester Perez, PA

Primary specialty

Surgical Physician AssistantTaxonomy code 363AS0400X

License

4559 Issued in CT

Practice address

365 Montauk Ave
New London, CT 06320-4700

Phone

(860) 442-0711

NPI assigned

Apr 18, 2019

Last updated

Feb 6, 2026By 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CT, RI2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 2

Specialty

Physician Assistant

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Northeast Medical Group IncGroup PAC ID 1254233836, 1,357 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Lawrence & Memorial Hospital Hospital, New London, CT, CCN 070007

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as apm

Quality

86.54

Promoting interoperability

99.98

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: msylvester434957@direct.ynhh.org

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.

• Northeast Medical Group, Inc.

  • Internal Medicine Physician
  • Bridgeport, CT
  • NPI 1043278351

  RI

  Medicare reassignment Care Compare group NPD
• L&M Physician Association, Inc

  • Family Medicine Physician
  • Ledyard, CT
  • NPI 1386972693
  NPD (past)

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

• Lawrence and Memorial Hospital, Inc.

  dba Lawrence and Memorial Hospital

  • General Acute Care Hospital
  • New London, CT
  • NPI 1073530879
  Care Compare affiliation
• Lawrence and Memorial Hospital, Inc.

  dba Lawrence and Memorial Hospital

  • General Acute Care Hospital
  • New London, CT
  • NPI 1700092459
  Care Compare affiliation

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

{
    "created_epoch": "1555545600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770336000000",
    "number": "1508429275",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "24 CANDLEWOOD DR",
            "city": "GREENVILLE",
            "state": "RI",
            "postal_code": "028281818"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "365 MONTAUK AVE",
            "city": "NEW LONDON",
            "state": "CT",
            "postal_code": "063204700",
            "telephone_number": "860-442-0711"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PEREZ",
        "first_name": "MARISSA",
        "middle_name": "ANN SYLVESTER",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-04-18",
        "last_updated": "2026-02-06",
        "certification_date": "2026-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AS0400X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Surgical",
            "state": "CT",
            "license": "4559",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tanya Pegnataro, MA, LPC
• James William Pellegrini, M.D.
• Latoya Lanay Pemberton
• Natalie Pendleton, MSW
• Eugene Francis Pereira, MT
• Kristen Leigh Perfater, TECHNICIAN
• Daniel Rudy Perkins, HS, SFIDC
• Serena Perkins
• Kayla Noel Perras, APRN
• Brianna Perry, PA-C

• Surgical Physician Assistant in New London, CT
• Providers in New London, CT by specialty
• Surgical Physician Assistant in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 6, 2026; 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.