Active NPI
Stephanie Elizabeth O'Brien, DO
- Hospitalist Physician
- Tucson, AZ
National Provider Identifier
1346944105
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Hospitalist Physician
- License
- 012484
- Practice address
- 6200 N la Cholla Blvd
Tucson, AZ 85741-3529 - Phone
- (520) 742-9000
- NPI assigned
- Mar 27, 2023
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 012484 | AZ | |
| Hospitalist Physician | 208M00000X | 012484 | AZ | Primary |
Addresses
Primary practice location
6200 N la Cholla Blvd
Tucson, AZ 85741-3529
Mailing address
6200 N la Cholla Blvd
Tucson, AZ 85741-3529
Phone (520) 742-9000
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Care Compare profile
Medicare Care Compare- Specialty
- Internal Medicine
- Education
- Midwestern University, Chicago College of Osteopathic Med, 2019
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
PO Box
Franklin, TN 37068
Hospital & facility affiliations
- Northwest Medical Center
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
Interoperability endpoints
- stephanie.o.brien.1@1576.direct.athenahealth.com
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Tucson, AZ
- NPI 1487607784
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1679875200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783555200000",
"number": "1346944105",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6200 N LA CHOLLA BLVD",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857413529",
"telephone_number": "520-742-9000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "6200 N LA CHOLLA BLVD",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857413529",
"telephone_number": "520-742-9000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "O'BRIEN",
"first_name": "STEPHANIE",
"middle_name": "ELIZABETH",
"credential": "DO",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2023-03-27",
"last_updated": "2026-07-09",
"certification_date": "2026-07-09",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "AZ",
"license": "012484",
"primary": false
},
{
"code": "208M00000X",
"taxonomy_group": "",
"desc": "Hospitalist",
"state": "AZ",
"license": "012484",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Tucson, AZ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; 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.