Individual provider Active NPI

Guerline Sinsmyr, MD

  • Internal Medicine Physician
  • Creston, IA
National Provider Identifier
1255715462
Registry record updated Mar 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
MD-51655 Issued in IA
Practice address
1700 W Townline St
Creston, IA 50801-1054
Phone
(641) 782-3947
NPI assigned
Jul 17, 2015
Last updated
Mar 17, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 17, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X NU
Internal Medicine Physician 207R00000X MD-51655 IA Primary

Addresses

Primary practice location

1700 W Townline St
Creston, IA 50801-1054

Mailing address

1700 W Townline St
Creston, IA 50801-1054
Phone (678) 428-8574

Other practice location 1

374 Stockholm St
Brooklyn, NY 11237-4006
Phone (718) 963-7272

Other practice location 2

506 Lenox Ave
New York, NY 10037
Phone (212) 939-1406

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
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

Enrollment IDStateProvider typePAC IDDetails
I20230830003162 IA Practitioner - Internal Medicine 1456714989 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Greater Regional Medical CenterGroup PAC ID 9234041013, 48 clinicians
Theoria MedicalGroup PAC ID 5395098339, 317 clinicians

Practice addresses (Care Compare)

1700 W Townline St
Creston, IA 50801-1054
Phone (641) 782-7091

2625 Iowa St
Perry, IA 50220-2413
Phone (515) 465-5349

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD-51655IAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
St Luke's Methodist Hospital Current Accepting new patients
Greater Regional Medical Center CurrentSince Aug 7, 2023 Accepting new patients
Theoria Medical Internal Medicine CurrentSince Jun 19, 2025 Accepting new patients
Greater Regional Medical Center CurrentSince Aug 7, 2023 Accepting new patients

Locations

1610 W Townline St
Creston, IA 50801
Phone (641) 782-2131

1700 W Townline St
Creston, IA 50801
Phone (641) 782-7091

2001 1st Ave N
Estherville, IA 51334
Phone (712) 362-3594

2002 Cedar St
Muscatine, IA 52761
Phone (563) 263-2023

2625 Iowa St
Perry, IA 50220
Phone (515) 465-5349

41800 W 11 Mile Rd
Ste 109
Novi, MI 48375
Phone (833) 578-2763

Interoperability endpoints

  • Direct secure messaging: gsinsmyr978822@direct.unitypoint.org

Organizations & group practices 4

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 3

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": "1437091200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742169600000",
    "number": "1255715462",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1700 W TOWNLINE ST",
            "city": "CRESTON",
            "state": "IA",
            "postal_code": "508011054",
            "telephone_number": "678-428-8574"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1700 W TOWNLINE ST",
            "city": "CRESTON",
            "state": "IA",
            "postal_code": "508011054",
            "telephone_number": "641-782-3947"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "374 Stockholm St",
            "address_purpose": "LOCATION",
            "city": "Brooklyn",
            "state": "NY",
            "postal_code": "112374006",
            "country_code": "US",
            "telephone_number": "718-963-7272",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "506 Lenox Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "10037",
            "country_code": "US",
            "telephone_number": "212-939-1406",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SINSMYR",
        "first_name": "GUERLINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-07-17",
        "last_updated": "2025-03-17",
        "certification_date": "2025-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IA",
            "license": "MD-51655",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Creston, IA

Sources for this page

Verify at the official NPI Registry.