Nathaniel C Sears, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

24997 Issued in NH

Practice address

155 Borthwick Ave Ste 200E
Portsmouth, NH 03801-4184

Phone

(603) 436-1773

Fax

(603) 427-0655

NPI assigned

Apr 12, 2012

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Enrolled in ME, NH2 enrollments

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 2

Specialty

Ophthalmology

Education

Clvlnd Clinic Lerner College of Med of Case WSTN RSV University, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Eyesight Ophthalmic Services PLLCGroup PAC ID 3971588609, 16 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

80.02 of 100Reported as group

Quality

75.68

Promoting interoperability

78

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nsears123924@uihcdirect.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.

• Eyesight Ophthalmic Services PLLC

  • Ophthalmology Physician
  • Portsmouth, NH
  • NPI 1073736310

  ME

  Medicare reassignment Care Compare group NPD
• Coastal Surgical Center, LLC

  • Ambulatory Surgical Clinic/Center
  • Newington, NH
  • NPI 1336713890
  NPD (past)
• Kittery Ophthalmic Consultants

  • Ophthalmology Physician
  • Kittery, ME
  • NPI 1578765640
  NPD (past)

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

{
    "created_epoch": "1334188800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789948800000",
    "number": "1306103577",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "155 BORTHWICK AVE STE 200E",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014184",
            "telephone_number": "603-436-1773"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "155 BORTHWICK AVE STE 200E",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014184",
            "telephone_number": "603-436-1773",
            "fax_number": "603-427-0655"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "99 US Route 1 Byp Ste B",
            "address_purpose": "LOCATION",
            "city": "Kittery",
            "state": "ME",
            "postal_code": "039041792",
            "country_code": "US",
            "telephone_number": "603-436-1773",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "200 Hawkins Dr",
            "address_purpose": "LOCATION",
            "city": "Iowa City",
            "state": "IA",
            "postal_code": "522421009",
            "country_code": "US",
            "telephone_number": "319-356-4674",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SEARS",
        "first_name": "NATHANIEL",
        "middle_name": "C",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-04-12",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207WX0009X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Glaucoma Specialist",
            "state": "IA",
            "license": "MD-44380",
            "primary": false
        },
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "NH",
            "license": "24997",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NH",
            "license": "24997",
            "primary": true
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "ME",
            "license": "MD27646",
            "primary": false
        },
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "ME",
            "license": "MD27646",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Seacoast Plastic Surgery and Medical Aesthetics, PLLC (Seacoast Plastic Surgery)
• Seacoast Speech & Language, LLC
• Seacoast Urolgy Associates
• Seacoast Wholistic Occupational Therapy, LLC
• Seaport Support
• Megan Seawards, APRN
• Alwin Sebastian, M.D.
• Chandler Secore
• Shauna Nancy Sedler, PMHNP
• Sarah Seedner

• Ophthalmology Physician in Portsmouth, NH
• Providers in Portsmouth, NH by specialty
• Ophthalmology Physician in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 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.