Sierra Dawn Gross, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

10930A Issued in WY

Practice address

1333 W 5TH St, Ste 112
Sheridan, WY 82801-2752

Phone

(307) 675-2650

Fax

(307) 675-2651

NPI assigned

Mar 31, 2014

Last updated

Oct 17, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Sierra Dawn Gross Stallman Former name

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in WY

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

Specialty

Internal Medicine

Education

Other, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Memorial Hospital of Sheridan CountyGroup PAC ID 2163405440, 90 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sheridan Memorial Hospital Hospital, Sheridan, WY, CCN 530006
• Campbell County Health Hospital, Gillette, WY, CCN 530002
• Johnson County Healthcare Center Hospital, Buffalo, WY, CCN 531308

Merit-based Incentive Payment System (MIPS)

Final score

86.66 of 100Reported as group

Quality

82.09

Promoting interoperability

98

Improvement activities

40

Cost

75.1

Merit-based Incentive Payment System (MIPS)

Final score

83.21 of 100Reported as group

Quality

80.49

Promoting interoperability

94

Improvement activities

40

Cost

68.55

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir-myrecord.cerner.com/r4/d7c7003a-96ae-4246-aaaa-19b18f13056e/
• Direct secure messaging: sgross@sheridan.cernerdirect.com

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• Alternative Elder Living, Inc.

  dba Green House Living for Sheridan

  • Skilled Nursing Facility
  • Sheridan, WY
  • NPI 1396034112

  Adp of the SNF, Operational/Managerial Control

  CMS ownership

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.

• Memorial Hospital of Sheridan County

  dba Sheridan Memorial Hospital

  • General Acute Care Hospital
  • Sheridan, WY
  • NPI 1487707188
  Medicare reassignment Care Compare group
• Big Horn Health Network

  dba Sheridan Memorial Clinics

  • Internal Medicine Physician
  • Sheridan, WY
  • NPI 1861722688
  Medicare reassignment NPD
• Sheridan Memorial Sameday Health & Imaging Urgent Care

  • Urgent Care Clinic/Center
  • Sheridan, WY
  • NPI 1124764915
  NPD
• Gastroenterology Associates, LLC

  • Gastroenterology Physician
  • Casper, WY
  • NPI 1811909807
  NPD (past)

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

• Campbell County Hospital District

  • General Acute Care Hospital
  • Gillette, WY
  • NPI 1487638417
  Care Compare affiliation
• Campbell County Hospital District

  dba Powder River Surgery Center

  • Ambulatory Surgical Clinic/Center
  • Gillette, WY
  • NPI 1780738153

  Hospital

  Care Compare affiliation
• Johnson County Memorial Hospital

  dba Johnson County Healthcare Center

  • Critical Access Hospital
  • Buffalo, WY
  • NPI 1003894122
  Care Compare affiliation
• Memorial Hospital of Sheridan County

  dba Sheridan Memorial Hospital

  • General Acute Care Hospital
  • Sheridan, WY
  • NPI 1487707188
  Care Compare affiliation

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

{
    "created_epoch": "1396224000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760659200000",
    "number": "1649698366",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1333 W 5TH ST, STE 110",
            "city": "SHERIDAN",
            "state": "WY",
            "postal_code": "828012752",
            "telephone_number": "307-675-2650",
            "fax_number": "307-675-2651"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1333 W 5TH ST, STE 112",
            "city": "SHERIDAN",
            "state": "WY",
            "postal_code": "828012752",
            "telephone_number": "307-675-2650",
            "fax_number": "307-675-2651"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1401 W 5th St",
            "address_purpose": "LOCATION",
            "city": "Sheridan",
            "state": "WY",
            "postal_code": "828012705",
            "country_code": "US",
            "telephone_number": "307-675-2650",
            "fax_number": "307-675-2651",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GROSS",
        "first_name": "SIERRA",
        "middle_name": "DAWN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-03-31",
        "last_updated": "2025-10-17",
        "certification_date": "2025-10-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WY",
            "license": "10930A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "sgross@sheridan.cernerdirect.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1401 W 5th St",
            "city": "Sheridan",
            "state": "WY",
            "country_code": "US",
            "postal_code": "828012705",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "SIERRA",
            "last_name": "GROSS STALLMAN",
            "middle_name": "DAWN",
            "credential": "M.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

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• Internal Medicine Physician in Sheridan, WY
• Providers in Sheridan, WY by specialty
• Internal Medicine Physician in Wyoming

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.