NPIMap

Individual provider Active NPI

Robert John Bierwirth, M.D.

  • Gastroenterology Physician
  • Cranston, RI
National Provider Identifier
1053517565
Registry record updated Oct 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
13848 Issued in RI
Practice address
1150 Reservoir Ave
Suite 201
Cranston, RI 02920-6068
Phone
(401) 943-1300
NPI assigned
Jun 22, 2007
Last updated
Oct 15, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 15, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hepatology Physician 207RI0008X 13848 RI
Gastroenterology Physician 207RG0100X 13848 RI Primary

Addresses

Primary practice location

1150 Reservoir Ave
Suite 201
Cranston, RI 02920-6068

Mailing address

PO Box 202230
Dallas, TX 75320-2230
Phone (401) 943-1300

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in RI
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
I20120730000262 RI Practitioner - Gastroenterology 8426214859 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Other, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Internal Medicine Associates IncGroup PAC ID 9234029257, 7 clinicians
University Gastroenterology, LLCGroup PAC ID 3678762804, 99 clinicians

Practice addresses (Care Compare)

1150 Reservoir Ave
Suite 201
Cranston, RI 02920-6043
Phone (401) 943-1300

33 Staniford St
Providence, RI 02905-3105
Phone (401) 421-8800

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
75.54 of 100Reported as individual
Quality
40.19
Promoting interoperability
93
Improvement activities
40
Cost
84.12

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy111
Upper gastrointestinal (GI) endoscopy for acid reflux170

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
13848RIMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Internal Medicine Associates Inc Gastroenterology CurrentSince Jul 7, 2012 Accepting new patients
University Gastroenterology, LLC Gastroenterology CurrentSince Aug 1, 2025 Accepting new patients

Locations

1150 Reservoir Ave
Cranston, RI 02920
Phone (401) 259-0340

1150 Reservoir Ave
Ste 201
Cranston, RI 02920
Phone 4019431300320

1150 Reservoir Ave
Ste ST203
Cranston, RI 02920

3461 S County Trl
Ste 201
East Greenwich, RI 02818
Phone (401) 471-6850

360 Kingstown Rd
Ste 202204
Narragansett, RI 02882
Phone (401) 789-1860

360 Kingstown Rd
Unit 202
Narragansett, RI 02882
Phone (401) 789-1860

33 Staniford St
Providence, RI 02905
Phone (401) 274-1810

Organizations & group practices 2

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.

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": "1182470400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760486400000",
    "number": "1053517565",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 202230",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "753202230",
            "telephone_number": "401-943-1300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1150 RESERVOIR AVE",
            "address_2": "SUITE 201",
            "city": "CRANSTON",
            "state": "RI",
            "postal_code": "029206068",
            "telephone_number": "401-943-1300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BIERWIRTH",
        "first_name": "ROBERT",
        "middle_name": "JOHN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-22",
        "last_updated": "2025-10-15",
        "certification_date": "2025-10-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0008X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hepatology",
            "state": "RI",
            "license": "13848",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "RI",
            "license": "13848",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Cranston, RI

Sources for this page

Verify at the official NPI Registry.