Jacob Starr Duker, MD

Primary specialty

Retina Specialist (Ophthalmology) PhysicianTaxonomy code 207WX0107X

License

18609 Issued in RI

Practice address

120 Dudley St Ste 303
Providence, RI 02905-2429

Phone

(401) 369-7773

NPI assigned

Apr 29, 2016

Last updated

Jun 11, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Enrolled in RI

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

Ophthalmology

Education

Tufts University School of Medicine, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Lifespan Physician Group IncGroup PAC ID 2567455082, 1,151 clinicians

Robert H. Janigian Jr. MD LLCGroup PAC ID 8426107863, 5 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jduker@janretina.intellechartdirect.net
• Direct secure messaging: jduker29937@tuftsmedicine.direct-ci.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.

• Lifespan Physician Group, Inc.

  dba Brown Health Medical Group

  • General Practice Physician
  • Providence, RI
  • NPI 1407116643
  Medicare reassignment Care Compare group NPD
• Robert H. Janigian Jr. MD LLC

  dba Janigian Retina Associates

  • Retina Specialist (Ophthalmology) Physician
  • Providence, RI
  • NPI 1861694069
  Medicare reassignment Care Compare group NPD
• Lifespan Physician Group, Inc.

  dba Brown Health Medical Group

  • Emergency Medicine Physician
  • Providence, RI
  • NPI 1568325678
  NPD

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

{
    "created_epoch": "1461888000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1467807222",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "120 DUDLEY ST STE 303",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029052429"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "120 DUDLEY ST STE 303",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029052429",
            "telephone_number": "401-369-7773"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2138 Mendon Rd Ste 101B",
            "address_purpose": "LOCATION",
            "city": "Cumberland",
            "state": "RI",
            "postal_code": "028643832",
            "country_code": "US",
            "telephone_number": "401-205-1759",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Lambert Lind Hwy",
            "address_purpose": "LOCATION",
            "city": "Warwick",
            "state": "RI",
            "postal_code": "028861074",
            "country_code": "US",
            "telephone_number": "401-369-7773",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUKER",
        "first_name": "JACOB",
        "middle_name": "STARR",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-04-29",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207WX0107X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Retina Specialist",
            "state": "RI",
            "license": "18609",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sakshi Duggal, MBBS
• Micah Benjamin Duggins-Warf, MD
• Brooke Ashley Duhamel
• John Duhamel, CRNA
• Kristen M Duhamel, MED, ATC, CSCS
• Casandra Dumay-Aldana
• Rachel Francess Dumond
• Kaima Dunbarwillams
• Femme M Duncan
• Jessica A Duncan, NP-C

• Retina Specialist (Ophthalmology) Physician in Providence, RI
• Providers in Providence, RI by specialty
• Retina Specialist (Ophthalmology) Physician in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 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.