Individual provider Active NPI

Gretchen Stumhofer, MD

  • Emergency Medicine Physician
  • Frederick, MD
National Provider Identifier
1801450598
Registry record updated Dec 31, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
A200302 Issued in CA
Practice address
400 W 7TH St
Frederick, MD 21701-4506
Phone
(240) 566-3300
NPI assigned
Apr 28, 2019
Last updated
Dec 31, 2024By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 31, 2024

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X D93389 MD
Student in an Organized Health Care Education/Training Program 390200000X
Emergency Medicine Physician 207P00000X A200302 CA Primary

Addresses

Primary practice location

400 W 7TH St
Frederick, MD 21701-4506

Mailing address

400 W 7TH St
Frederick, MD 21701-4506

Other practice location 1

11234 Anderson St
Loma Linda, CA 92354-2804
Phone (909) 558-4085

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, CA, ID3 enrollments
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 3

Enrollment IDStateProvider typePAC IDDetails
I20220615003038 DC Practitioner - Emergency Medicine 8325427792 Reassigns benefits to 1 organization
I20250102002302 CA Practitioner - Emergency Medicine 8325427792 Reassigns benefits to 1 organization
I20251226001719 ID Practitioner - Emergency Medicine 8325427792 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cep America - CaliforniaGroup PAC ID 6103739131, 1,278 clinicians

Practice addresses (Care Compare)

450 Stanyan St
San Francisco, CA 94117-1019
Phone (415) 668-1000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A200302CAMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cep America - California Emergency Medicine CurrentSince Jan 1, 2025 Accepting new patients
Teton Valley Health Care, Inc CurrentSince Aug 23, 2023 Accepting new patients
Teton Valley Health Care Inc Emergency Medicine CurrentSince Oct 12, 2025 Accepting new patients
Teton Valley Health Care Inc CurrentSince Aug 23, 2023 Accepting new patients
Cep America-California Emergency Medicine CurrentSince Jan 1, 2025 Accepting new patients
Commonwealth Emergency Physicians PC Emergency Medicine CurrentSince Jul 1, 2022 Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients
Medical Imaging Associates of Idaho Falls, Inc Past Accepting new patients

Locations

2100 Powell St
Ste 400
Emeryville, CA 94608
Phone (510) 350-2638

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 350-2663

450 Stanyan St
San Francisco, CA 94117
Phone (415) 668-1000

900 Hyde St
San Francisco, CA 94109
Phone (415) 353-6000

120 E Howard St
Driggs, ID 83422
Phone (208) 354-2302

2501 Parkers Ln
Alexandria, VA 22306
Phone (703) 664-7000

Interoperability endpoints

  • Direct secure messaging: gretchen.stumhofer.1@15468.direct.athenahealth.com
  • Direct secure messaging: gstumhofer257336@direct.llu.edu

Organizations & group practices 9

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 1

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": "1556409600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1735603200000",
    "number": "1801450598",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "400 W 7TH ST",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217014506"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 W 7TH ST",
            "city": "FREDERICK",
            "state": "MD",
            "postal_code": "217014506",
            "telephone_number": "240-566-3300"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "11234 Anderson St",
            "address_purpose": "LOCATION",
            "city": "Loma Linda",
            "state": "CA",
            "postal_code": "923542804",
            "country_code": "US",
            "telephone_number": "909-558-4085",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STUMHOFER",
        "first_name": "GRETCHEN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-04-28",
        "last_updated": "2024-12-31",
        "certification_date": "2024-12-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MD",
            "license": "D93389",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A200302",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Frederick, MD

Sources for this page

Verify at the official NPI Registry.