Active NPI
Ernest L Gradillas, M.D.
- Orthopaedic Surgery Physician
- Tucson, AZ
National Provider Identifier
1699776328
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- 9133
- Practice address
- 2424 N Wyatt Dr
Tucson, AZ 85712-6115 - Phone
- (520) 784-6200
- Fax
- (520) 784-6249
- NPI assigned
- Aug 3, 2005
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Orthopaedic Surgery Physician | 207X00000X | 9133 | AZ | Primary |
Addresses
Primary practice location
2424 N Wyatt Dr
Tucson, AZ 85712-6115
Mailing address
PO Box 31630
Tucson, AZ 85751-1630
Phone (520) 784-6200
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Tucson Orthopaedic Institute Professional Corporation | Orthopaedic Surgery | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Orthopaedic Surgery Physician
- Tucson, AZ
- NPI 1437193265
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1123027200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1699776328",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 31630",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857511630",
"telephone_number": "520-784-6200",
"fax_number": "520-784-6249"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2424 N WYATT DR",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857126115",
"telephone_number": "520-784-6200",
"fax_number": "520-784-6249"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GRADILLAS",
"first_name": "ERNEST",
"middle_name": "L",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-08-03",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "AZ",
"license": "9133",
"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 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.