NPIMap

Individual provider Active NPI

Jonathan B Greer, M.D.

  • Surgical Oncology Physician
  • Boston, MA
National Provider Identifier
1194985614
Registry record updated Feb 16, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgical Oncology PhysicianTaxonomy code 2086X0206X
License
D85979 Issued in MD
Practice address
55 Fruit St
Boston, MA 02114-2621
Phone
(617) 726-8290
NPI assigned
Jun 10, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 16, 2024

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X 1018289 MA
Surgical Oncology Physician 2086X0206X D85979 MD Primary

Addresses

Primary practice location

55 Fruit St
Boston, MA 02114-2621

Mailing address

9910 Franklin Square Dr Ste 2110
Baltimore, MD 21236-4902
Phone (410) 933-6423

Other practice location 1

600 N Wolfe St
Baltimore, MD 21287-0005
Phone (443) 287-6316

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, MA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20181017001697 MD Practitioner - Surgical OncologyPractitioner - General Surgery 6002034816 Reassigns benefits to 1 organization
I20240404000039 MA Practitioner - Surgical OncologyPractitioner - General Surgery 6002034816 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Surgical OncologyAlso: General Surgery
Education
Warren Alpert Medical School of Brown University, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

55 Fruit St
Boston, MA 02114-2621
Phone (617) 726-2000

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Hernia repair - groin (open)1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
1018289MAMDSurgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts General Physicians Organization Inc Surgery CurrentSince Mar 1, 2024 Accepting new patients
General Hospital Corp Current Accepting new patients
Johns Hopkins University CurrentSince Sep 1, 2018 Accepting new patients
The General Hospital Corporation CurrentSince Mar 1, 2024 Accepting new patients
Johns Hopkins University Surgery CurrentSince Sep 1, 2018 Accepting new patients
Johns Hopkins University Current Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

15 Parkman St
Boston, MA 02114
Phone (617) 726-3023

62 13th St
Ste 102
Charlestown, MA 02129

600 N Wolfe St
Baltimore, MD 21287

Interoperability endpoints

  • Direct secure messaging: greer.jonathan.mgh@direct.partners.masshiway.net

Organizations & group practices 7

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.

Hospital & facility affiliations 6

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

NPI Registry JSON

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

{
    "created_epoch": "1213056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1708041600000",
    "number": "1194985614",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9910 FRANKLIN SQUARE DR STE 2110",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212364902",
            "telephone_number": "410-933-6423",
            "fax_number": "410-933-1390"
        },
        {
            "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": "617-726-8290"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "600 N Wolfe St",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212870005",
            "country_code": "US",
            "telephone_number": "443-287-6316",
            "fax_number": "443-769-1275",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREER",
        "first_name": "JONATHAN",
        "middle_name": "B",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-06-10",
        "last_updated": "2024-02-16",
        "certification_date": "2024-02-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MA",
            "license": "1018289",
            "primary": false
        },
        {
            "code": "2086X0206X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Oncology",
            "state": "MD",
            "license": "D85979",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.