Active NPI
Reza Allamehzadeh, M.D
- Internal Medicine Physician
- Mission Viejo, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- A102735
- Practice address
- 25982 Pala Ste 170
Mission Viejo, CA 92691-6736 - Phone
- (949) 581-2002
- Fax
- (949) 581-2221
- NPI assigned
- Nov 9, 2008
- Last updated
- Aug 19, 2025
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | A102735 | CA | Primary |
| Nephrology Physician | 207RN0300X | A102735 | CA |
Addresses
Primary practice location
25982 Pala Ste 170
Mission Viejo, CA 92691-6736
Mailing address
25982 Pala Ste 170
Mission Viejo, CA 92691-6736
Phone (949) 581-2002
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
- Internal Medicine
- Education
- Other, 2000
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
Practice addresses (Care Compare)
25982 Pala
Suite 170
Mission Viejo, CA 92691-6736
Phone (949) 581-2002
Hospital & facility affiliations
- Noyan Home Health Care Inc.
- Bright Future Home Health, Inc
- Orange County Care Providers, Inc
- Care Plus Home Health
- Hoag Home Health
- Memorialcare Saddleback Medical Center
- Providence Mission Hospital
- Hoag Memorial Hospital Presbyterian
Merit-based Incentive Payment System (MIPS)
- Final score
- 82.3 of 100
- Quality
- 50.21
- Improvement activities
- 40
- Cost
- 80.26
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Removal of tissue | 1-10 |
| Removal of skin lesions | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 102735 | CA | MD | Marriage & Family Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mission Hospital Regional Medical Center | Past | Accepting new patients | |
| Saddleback Memorial Medical Center | Past | Accepting new patients | |
| Behrang Dehkordi MD Inc | Past | Accepting new patients | |
| Hoag Memorial Hospital Presbyterian | Past | Accepting new patients |
Networks
- BSC 65 PLUS INDIVIDUAL MAPD
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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Nephrology Physician
- Mission Viejo, CA
- NPI 1992052369
-
- Family Medicine Physician
- San Diego, CA
- NPI 1427553502
-
- General Acute Care Hospital
- Newport Beach, CA
- NPI 1518951300
-
dba Providence Mission Hospital
- Rehabilitation Hospital
- Mission Viejo, CA
- NPI 1003956913
-
- Rehabilitation Hospital Unit
- Laguna Hills, CA
- NPI 1114967114
Hospital & facility affiliations 9
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Los Angeles Home Health Care Group
- Home Health Agency
- Woodland Hills, CA
- NPI 1366917692
-
dba CARE PLUS Home Health
- Home Health Agency
- Laguna Hills, CA
- NPI 1528385143
-
- Home Health Agency
- Newport Beach, CA
- NPI 1174192892
-
- General Acute Care Hospital
- Newport Beach, CA
- NPI 1518951300
-
dba Providence Mission Hospital
- General Acute Care Hospital
- Mission Viejo, CA
- NPI 1912108002
-
dba Mission Hospital
- General Acute Care Hospital
- Mission Viejo, CA
- NPI 1992752315
-
- Home Health Agency
- Glendale, CA
- NPI 1538428529
-
- Home Health Agency
- Cerritos, CA
- NPI 1144416876
-
- General Acute Care Hospital
- Laguna Hills, CA
- NPI 1275576381
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1226188800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1755561600000",
"number": "1467606053",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "25982 PALA STE 170",
"city": "MISSION VIEJO",
"state": "CA",
"postal_code": "926916736",
"telephone_number": "949-581-2002",
"fax_number": "949-581-2221"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "25982 PALA STE 170",
"city": "MISSION VIEJO",
"state": "CA",
"postal_code": "926916736",
"telephone_number": "949-581-2002",
"fax_number": "949-581-2221"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ALLAMEHZADEH",
"first_name": "REZA",
"name_prefix": "Dr.",
"credential": "M.D",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2008-11-09",
"last_updated": "2025-08-19",
"certification_date": "2025-08-19",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "A102735",
"primary": true
},
{
"code": "207RN0300X",
"taxonomy_group": "",
"desc": "Internal Medicine, Nephrology",
"state": "CA",
"license": "A102735",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Mission Viejo, CA
- Lowell George Alexander, NMD
- Alireza Raboubi, MD, Inc
- Shaden Alkhairi
- All Heart in-Home Care LLC (Acti-Kare Responsive In-Home Care)
- Allameh Medical Corporation
- Allen Chiropractic, a Professional Corporation
- Linda Allen- Stuart, LCSW
- Danielle Marie Allen, AU.D.
- Vivienne E Allen, DDS
- Alliance Senior Living Inc. (Alliance Senior Living 3)
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 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.