NPIMap

Individual provider Active NPI

Sagar Uday Nigwekar, MD

  • Nephrology Physician
  • Boston, MA
National Provider Identifier
1710939848
Registry record updated Jun 12, 2013
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
252311 Issued in MA
Practice address
165 Cambridge St
Suite 302
Boston, MA 02114-2783
Phone
(585) 729-8636
NPI assigned
May 17, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 12, 2013

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 002578 NY
Nephrology Physician 207RN0300X 252311 MA Primary
Internal Medicine Physician 207R00000X 252311 MA

Addresses

Primary practice location

165 Cambridge St
Suite 302
Boston, MA 02114-2783

Mailing address

165 Cambridge St
Suite 302
Boston, MA 02114-2783
Phone (585) 729-8636

Other identifiers 1

IdentifierTypeStateIssuer
02752789MedicaidNY

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20121026000393 MA Practitioner - NephrologyPractitioner - Internal Medicine 7719991793 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
NephrologyAlso: Internal Medicine
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

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

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
002578NYMDInternal Medicine Physician
252311MAMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts General Physicians Organization Inc Internal Medicine CurrentSince Jul 1, 2013 Accepting new patients
Massachusetts Acute Care Specialists PC Family Medicine CurrentSince Aug 1, 2012 Accepting new patients
General Hospital Corp Current Accepting new patients
New England Nephrology Associates Nephrology CurrentSince Sep 1, 2016 Accepting new patients
The General Hospital Corporation CurrentSince Jul 1, 2013 Accepting new patients
Brigham & Womens Physicians Organization Inc Internal Medicine CurrentSince Dec 1, 2025 Accepting new patients
Brigham and Womens Physicians Organization Inc Past Accepting new patients
Melrosewakefield Healthcare, Inc. Past Accepting new patients

Locations

75 Francis St
Boston, MA 02115

55 Fruit St
Boston, MA 02114

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

165 Cambridge St
Ste 302
Boston, MA 02114
Phone (617) 724-1501

2100 Dorchester Ave
Dorchestr Ctr, MA 02124
Phone (617) 506-2222

1153 Centre St
#L1
Jamaica Plain, MA 02130

1153 Centre St
Jamaica Plain, MA 02130
Phone (617) 983-7000

170 Governors Ave
Medford, MA 02155
Phone (781) 306-6000

31 Pine St
Ste 204
Norfolk, MA 02056
Phone (617) 739-7100

3 Woodland Rd
Ste 119
Stoneham, MA 02180
Phone (781) 279-2454

Interoperability endpoints

  • Direct secure messaging: nigwekar.sagar.mgh@direct.partners.masshiway.net
  • Direct secure messaging: snigwekar28831@tuftsmedicine.direct-ci.com

Organizations & group practices 8

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 5

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": "1147824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1370995200000",
    "number": "1710939848",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST",
            "address_2": "SUITE 302",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142783",
            "telephone_number": "585-729-8636"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST",
            "address_2": "SUITE 302",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142783",
            "telephone_number": "585-729-8636"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIGWEKAR",
        "first_name": "SAGAR",
        "middle_name": "UDAY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-17",
        "last_updated": "2013-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "002578",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "MA",
            "license": "252311",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "252311",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "02752789",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.