Active NPI
Raymond J. Delorenzi, MD
- Orthopaedic Surgery Physician
- Merced, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- C183342
- Practice address
- 450 E Yosemite Ave Ste D
Merced, CA 95340-8429 - Phone
- (350) 225-3602
- Fax
- (909) 752-8719
- NPI assigned
- Apr 25, 2006
- Last updated
- May 7, 2026
- 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 | C183342 | CA | Primary |
Addresses
Primary practice location
450 E Yosemite Ave Ste D
Merced, CA 95340-8429
Mailing address
450 E Yosemite Ave Ste D
Merced, CA 95340-8429
Phone (350) 225-3602
Other practice location 1
333 Mercy Ave
Merced, CA 95340-8319
Phone (209) 564-5000
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in FL, CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Orthopedic Surgery
- Education
- Indiana University School of Medicine, 1982
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
315 Mercy Ave
Suite 400
Merced, CA 95340-8368
Phone (209) 564-3700
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Hip replacement | 1-10 |
| Knee replacement | 1-10 |
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| C183342 | CA | MD | Orthopaedic Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Steward Medical Group, Inc. | Current | Accepting new patients | |
| Steward Medical Group, Inc | Current | Accepting new patients | |
| Dignity Health Medical Foundation | Current | Accepting new patients | |
| Dignity Health Medical Foundation | Current | Accepting new patients | |
| Dignity Health Medical Foundation | Current | Accepting new patients | |
| Holmes Regional Medical Center, Inc. | Past | Accepting new patients | |
| Stewart and Stewart a Medical Corporation | Past | Accepting new patients | |
| Osler Medical Inc | Past | Accepting new patients | |
| Viera Sports Medicine & Orthopedic Center, Inc | Orthopaedic Surgery | Past | Accepting new patients |
| Dignity Health | Past | Accepting new patients | |
| Viera Hospital Inc | Past | Accepting new patients | |
| St Catherine Hospital | Past | Accepting new patients | |
| Paul J Wisniewski DO Inc | Past | Accepting new patients |
Locations
315 Mercy Ave
Ste 400
Merced, CA 95340
Phone (209) 564-3700
333 Mercy Ave
Merced, CA 95340
Phone (209) 385-1280
3400 Data Dr
Rncho Cordova, CA 95670
Phone (916) 379-2726
240 N Wickham Rd
Ste 300
Melbourne, FL 32935
Phone (321) 308-5050
7970 N Wickham Rd
Ste 102
Melbourne, FL 32940
Phone (321) 255-7711
103 Longwood Ave
Rockledge, FL 32955
Phone (321) 631-5677
8000 Ron Beatty Blvd
Ste A-3
Sebastian, FL 32976
Phone (772) 664-1388
Organizations & group practices 13
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.
-
dba Mercy Medical Group, a service of Dignity Health Medical Foundation
- Multi-Specialty Clinic/Center
- Sacramento, CA
- NPI 1700803418
-
dba Dignity Health Medical Group - Merced, a service of Dignity Health Med
- Multi-Specialty Clinic/Center
- Merced, CA
- NPI 1487950523
-
dba Dignity Health Medical Group - North State, a service of Dignity Healt
- Multi-Specialty Clinic/Center
- Redding, CA
- NPI 1912288432
-
- Urology Physician
- Cocoa, FL
- NPI 1104367630
-
dba Mercy Medical Center Merced
- General Acute Care Hospital
- Merced, CA
- NPI 1518018191
-
- Trauma Surgery Physician
- Apple Valley, CA
- NPI 1780433698
-
dba Stewart Medical Group
- Family Medicine Physician
- Alhambra, CA
- NPI 1306058565
-
- Multi-Specialty Clinic/Center
- Melbourne, FL
- NPI 1356308670
-
- Certified Registered Nurse Anesthetist
- Garden City, KS
- NPI 1760604318
-
- General Acute Care Hospital
- Melbourne, FL
- NPI 1730494816
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Home Health Agency
- Atwater, CA
- NPI 1962991604
-
dba Mercy Medical Center Merced
- General Acute Care Hospital
- Merced, CA
- NPI 1518018191
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1145923200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778112000000",
"number": "1104882539",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "450 E YOSEMITE AVE STE D",
"city": "MERCED",
"state": "CA",
"postal_code": "953408429",
"telephone_number": "350-225-3602",
"fax_number": "909-752-8719"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "450 E YOSEMITE AVE STE D",
"city": "MERCED",
"state": "CA",
"postal_code": "953408429",
"telephone_number": "350-225-3602",
"fax_number": "909-752-8719"
}
],
"practiceLocations": [
{
"address_1": "333 Mercy Ave",
"address_purpose": "LOCATION",
"city": "Merced",
"state": "CA",
"postal_code": "953408319",
"country_code": "US",
"telephone_number": "209-564-5000",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "DELORENZI",
"first_name": "RAYMOND",
"middle_name": "J.",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-04-25",
"last_updated": "2026-05-07",
"certification_date": "2026-05-07",
"status": "A"
},
"taxonomies": [
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "CA",
"license": "C183342",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Merced, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.