Active NPI
Mohammad Zalzaleh, DO
- Orthopaedic Surgery Physician
- Fountain Valley, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Orthopaedic Surgery Physician
- License
- 20A20355
- Practice address
- 8700 Warner Ave Ste 140
Fountain Valley, CA 92708-3209 - Phone
- (714) 850-7300
- NPI assigned
- Apr 16, 2019
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Orthopaedic Hand Surgery Physician | 207XS0106X | 81378-21 | WI | |
| Student in an Organized Health Care Education/Training Program | 390200000X | |||
| Orthopaedic Surgery Physician | 207X00000X | 20A20355 | CA | Primary |
Addresses
Primary practice location
8700 Warner Ave Ste 140
Fountain Valley, CA 92708-3209
Mailing address
8700 Warner Ave Ste 140
Fountain Valley, CA 92708-3209
Other practice location 1
8701 Watertown Plank Rd
Milwaukee, WI 53226-3548
Phone (414) 777-7700
Other practice location 2
11234 Anderson Street
GME Office Westerly Suite C
Loma Linda, CA 92354-2804
Phone (909) 558-6444
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
Care Compare profile
Medicare Care Compare- Specialty
- Hand Surgery
- Education
- Other, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
8700 Warner Ave
Suite 140
Fountain Valley, CA 92708-3209
Phone (714) 850-7300
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 20A20355 | CA | MD | Orthopaedic Surgery Physician |
| 81378-21 | WI | MD | Orthopaedic Hand Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Orthowest | Orthopaedic Surgery | Current | Accepting new patients |
| Orthowest | Orthopaedic Surgery | Current | Accepting new patients |
| Daniel T Stein, M.D. a Medical Corporation | Past | Accepting new patients |
Locations
8700 Warner Ave
Fountain Valley, CA 92708
8700 Warner Ave
Ste 140
Fountain Vly, CA 92708
Phone (714) 847-6727
22 Odyssey
Ste 205
Irvine, CA 92618
Phone (949) 870-3332
24331 El Toro Rd
Ste 200
Laguna Woods, CA 92637
Phone (949) 767-0800
2445 W Chapman Ave
Ste 100
Orange, CA 92868
Phone (714) 850-7300
Networks
- BSC 65 PLUS INDIVIDUAL MAPD
Interoperability endpoints
- mzalzaleh145555@direct.llu.edu
Organizations & group practices 3
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
- Laguna Woods, CA
- NPI 1760007330
-
- Durable Medical Equipment & Medical Supplies
- Fountain Valley, CA
- NPI 1497356489
Orthopaedic Surgery
-
- Surgery Physician
- Fountain Valley, CA
- NPI 1386767457
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1555372800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1747267200000",
"number": "1235792276",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "8700 WARNER AVE STE 140",
"city": "FOUNTAIN VALLEY",
"state": "CA",
"postal_code": "927083209"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "8700 WARNER AVE STE 140",
"city": "FOUNTAIN VALLEY",
"state": "CA",
"postal_code": "927083209",
"telephone_number": "714-850-7300"
}
],
"practiceLocations": [
{
"address_1": "8701 Watertown Plank Rd",
"address_purpose": "LOCATION",
"city": "Milwaukee",
"state": "WI",
"postal_code": "532263548",
"country_code": "US",
"telephone_number": "414-777-7700",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "11234 Anderson Street",
"address_2": "GME Office Westerly Suite C",
"address_purpose": "LOCATION",
"city": "Loma Linda",
"state": "CA",
"postal_code": "923542804",
"country_code": "US",
"telephone_number": "909-558-6444",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ZALZALEH",
"first_name": "MOHAMMAD",
"credential": "DO",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2019-04-16",
"last_updated": "2025-05-15",
"certification_date": "2025-05-15",
"status": "A"
},
"taxonomies": [
{
"code": "207XS0106X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery, Hand Surgery",
"state": "WI",
"license": "81378-21",
"primary": false
},
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": false
},
{
"code": "207X00000X",
"taxonomy_group": "",
"desc": "Orthopaedic Surgery",
"state": "CA",
"license": "20A20355",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Fountain Valley, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 2025; 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.