Joshua Siu Lim NG, MDCM, MPH

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

1015951 Issued in MA

Practice address

55 Fruit St
Boston, MA 02114-2621

Phone

(808) 675-1449

NPI assigned

Mar 19, 2021

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other names 1

• Joshua S NG-Kamstra Professional name

Medicare fee-for-service enrollment

Enrolled in MA

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

General Surgery

Education

McGill University, Faculty of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, 3,494 clinicians

The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
• North Shore Medical Center - Hospital, Salem, MA, CCN 220035

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ng.joshua.mgh@direct.partners.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573

  Surgery

  Medicare reassignment Care Compare group NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment Care Compare group NPD
• General Hospital Corp

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1508390014
  NPD
• Queens University Medical Group

  • Multi-Specialty Clinic/Center
  • Honolulu, HI
  • NPI 1891441382
  NPD
• The Queen'S Medical Center

  • Clinic/Center
  • Honolulu, HI
  • NPI 1366065591
  NPD
• The Queen'S Medical Center

  • General Acute Care Hospital
  • Honolulu, HI
  • NPI 1487693586
  NPD
• The Queens Medical Center

  • General Acute Care Hospital
  • Honolulu, HI
  • NPI 1184612764
  NPD
• North Shore Medical Center, Inc.

  • General Acute Care Hospital
  • Salem, MA
  • NPI 1730121633
  NPD (past)

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

• North Shore Medical Center, Inc.

  • General Acute Care Hospital
  • Salem, MA
  • NPI 1730121633
  Care Compare affiliation
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Care Compare affiliation

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

{
    "created_epoch": "1616112000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786406400000",
    "number": "1295311462",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9 SEAGRAVE RD UNIT 1",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021401640",
            "telephone_number": "808-675-1449"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "808-675-1449"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1301 Punchbowl St # 134",
            "address_purpose": "LOCATION",
            "city": "Honolulu",
            "state": "HI",
            "postal_code": "968132499",
            "country_code": "US",
            "telephone_number": "808-691-8517",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156106",
            "country_code": "US",
            "telephone_number": "617-732-5500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NG",
        "first_name": "JOSHUA",
        "middle_name": "SIU LIM",
        "credential": "MDCM, MPH",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-19",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "MA",
            "license": "1015951",
            "primary": false
        },
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "MA",
            "license": "1015951",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MA",
            "license": "1015951",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "JOSHUA",
            "last_name": "NG-KAMSTRA",
            "middle_name": "S",
            "credential": "MDCM, MPH",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Grace Yan-Yee NG, MD
• Jacqueline NG
• Jeremy T NG, MD
• Jillian Alyson NG, P.T.
• Joseph Y. NG, D.M.D.
• Ju-Mei NG, M.D.
• Julenne NG
• Kei Yan Andrew NG, M.D.
• Kimmie NG, MD
• Lauren Christina NG, PHD

• Surgery Physician in Boston, MA
• Providers in Boston, MA by specialty
• Surgery Physician in Massachusetts

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