Active NPI
Tarcisio Calibo Diaz, MD
- Endocrinology, Diabetes & Metabolism Physician
- Corona, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Endocrinology, Diabetes & Metabolism Physician
- License
- A46295
- Practice address
- 900 S Main St
Suite 100
Corona, CA 92882-3401 - Phone
- (951) 738-9081
- Fax
- (951) 738-9081
- NPI assigned
- Mar 5, 2007
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Endocrinology, Diabetes & Metabolism Physician | 207RE0101X | A46295 | CA | Primary |
Addresses
Primary practice location
900 S Main St
Suite 100
Corona, CA 92882-3401
Mailing address
900 S Main Street
Suite 100
Corona, CA 92882-3554
Phone (951) 738-9081
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20040212000530 | CA | Practitioner - Endocrinology | 6406740117 | Practice locations: Corona, CA |
Care Compare profile
Medicare Care Compare- Specialty
- Endocrinology
- Education
- Perelman School of Med at the University of Pennsylvania, 1989
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
900 S Main St
Corona, CA 92882-3401
Phone (951) 738-9081
Hospital & facility affiliations
- Kinder Care Home Health, Inc.
- Monarch Hospice Care, Inc
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Removal of nail tissue | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Tarcisio C. Diaz, MD, a Medical Corporation | Specialist | Current | Accepting new patients |
| Tarcisio C. Diaz, M.D. a Medical Corporation | Single Specialty | Current | Accepting new patients |
| Doctors Hospital of Riverside LLC | Past | Accepting new patients | |
| Uhs Corona Inc | Past | Accepting new patients | |
| Riverside Healthcare System, L.P. | Past | Accepting new patients |
Locations
900 S Main St
Ste 100
Corona, CA 92882
Phone (951) 738-8383
Networks
- BSC 65 PLUS INDIVIDUAL MAPD
Interoperability endpoints
- tarcisiodiaz@diaz1.allscriptsdirect.net
Ownership & related parties
All facility ownership & control disclosures 1
Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.
| Facility | Type | Role | Since |
|---|---|---|---|
| Monarch Hospice Care, Inc. | Hospice | Contracted Managing Employee | Oct 22, 2025 |
Owned or controlled facilities with NPI records 1
Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.
-
- Community Based Hospice Care Agency
- Walnut, CA
- NPI 1205258126
Contracted Managing Employee
Organizations & group practices 5
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.
-
- Endocrinology, Diabetes & Metabolism Physician
- Corona, CA
- NPI 1891135752
Single Specialty
-
- Specialist
- Corona, CA
- NPI 1568161586
-
- General Acute Care Hospital
- Riverside, CA
- NPI 1124596382
-
- Rehabilitation Hospital Unit
- Riverside, CA
- NPI 1053358010
-
- Rehabilitation Hospital Unit
- Corona, CA
- NPI 1255327920
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Home Health Agency
- Wildomar, CA
- NPI 1538763594
-
- Community Based Hospice Care Agency
- Walnut, CA
- NPI 1205258126
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1173052800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1736726400000",
"number": "1346379583",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "900 S MAIN STREET",
"address_2": "SUITE 100",
"city": "CORONA",
"state": "CA",
"postal_code": "928823554",
"telephone_number": "951-738-9081",
"fax_number": "951-738-9081"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "900 S MAIN ST",
"address_2": "SUITE 100",
"city": "CORONA",
"state": "CA",
"postal_code": "928823401",
"telephone_number": "951-738-9081",
"fax_number": "951-738-9081"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DIAZ",
"first_name": "TARCISIO",
"middle_name": "CALIBO",
"name_prefix": "Mr.",
"credential": "MD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2007-03-05",
"last_updated": "2025-01-13",
"certification_date": "2025-01-13",
"status": "A"
},
"taxonomies": [
{
"code": "207RE0101X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
"state": "CA",
"license": "A46295",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Corona, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 13, 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.