Active NPI
Cassandra A Mahan-Richards, M.D.
- Pediatrics Physician
- Grand Terrace, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- G53986
- Practice address
- 11980 Mount Vernon Ave
Grand Terrace, CA 92313-5172 - Phone
- (909) 864-1097
- Fax
- (951) 225-6879
- NPI assigned
- May 17, 2006
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | G53986 | CA | Primary |
| Allergy Physician | 207KA0200X | G53986 | CA | |
| Allergy Physician | 207KA0200X | MD60286895 | WA |
Addresses
Primary practice location
11980 Mount Vernon Ave
Grand Terrace, CA 92313-5172
Mailing address
PO Box 3649
Spokane, WA 99220-3649
Other practice location 1
847 W Childs Ave
Merced, CA 95341-6862
Phone (209) 722-4842
Other identifiers 2
| Identifier | Type | State | Issuer |
|---|---|---|---|
| MD60286895 | Other | WA | WASHINGTON STATE LICENSE |
| 00G646250 | Medicaid | CA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in WA, 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
- Pediatric Medicine
- Education
- Other, 1983
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
1910 Customer Care Way
Atwater, CA 95301-5167
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| G53986 | CA | MD | Allergy Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Multicare Health System | Current | Accepting new patients | |
| Golden Valley Health Centers | Current | Accepting new patients | |
| Multicare Health System | Pediatrics | Current | Accepting new patients |
| Golden Valley Health Center | Current | Accepting new patients | |
| Golden Valley Health Centers | Current | Accepting new patients | |
| Multicare Health System | Current | Accepting new patients | |
| Rockwood Clinic PS | Past | Accepting new patients | |
| Golden Valley Health Center | Past | Accepting new patients | |
| Mathiesen Memorial Health Center | Past | Accepting new patients | |
| Prairie Medical Group | Past | Accepting new patients | |
| Pinnicale Pain Center | Past | Accepting new patients | |
| Peter Jahangir Parker, MD, Inc. | Past | Accepting new patients |
Locations
1405 California Ave
Dos Palos, CA 93620
Phone (209) 392-2111
13161 Jefferson St
Le Grand, CA 95333
Phone (209) 389-1900
821 Texas Ave
Los Banos, CA 93635
Phone (209) 385-5481
250 Northgate Dr
Manteca, CA 95336
Phone (209) 239-5299
797 W Childs Ave
Merced, CA 95341
Phone (209) 383-5871
3940 Sandpiper Ave
Merced, CA 95340
Phone (209) 381-4104
847 W Childs Ave
Merced, CA 95341
Phone (209) 383-7441
847 W Childs Ave
Ste B
Merced, CA 95341
847 W Childs Ave
Ste A
Merced, CA 95341
Phone (209) 383-7441
1500 Florida Ave
Modesto, CA 95350
Phone (209) 571-5071
1114 6th St
Modesto, CA 95354
Phone (209) 576-2845
2101 Tenaya Dr
Modesto, CA 95354
Phone (209) 576-6766
1121 Hammond St
Modesto, CA 95351
Phone (209) 576-4437
637 Merced St
Newman, CA 95360
Phone (209) 862-0270
200 C St
Patterson, CA 95363
Phone (209) 892-6307
9235 E Broadway St
Planada, CA 95365
Phone (209) 382-0253
4150 Patterson Rd
Riverbank, CA 95367
Phone (209) 863-3900
1200 W Main St
Turlock, CA 95380
Phone (209) 668-5388
4700 Point Fosdick Dr
Ste 104
Gig Harbor, WA 98335
Phone (253) 459-7590
222 State Ave N
Kent, WA 98030
Phone (253) 372-7680
200 Lilly Rd NE
Ste C
Olympia, WA 98506
Phone (360) 918-8336
Interoperability endpoints
- cassandra.richardsmahan.p1@direct.mathiesenmemorialhc.nextgenshare.com
Organizations & group practices 12
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.
-
- Federally Qualified Health Center (FQHC)
- Turlock, CA
- NPI 1356445753
-
- Neurological Surgery Physician
- Tacoma, WA
- NPI 1497766638
-
- Federally Qualified Health Center (FQHC)
- Modesto, CA
- NPI 1942057963
-
- Community/Retail Pharmacy
- Merced, CA
- NPI 1093817405
-
- Pediatrics Physician
- Tacoma, WA
- NPI 1023101235
-
- Community/Retail Pharmacy
- Spokane, WA
- NPI 1396594875
-
- Federally Qualified Health Center (FQHC)
- Modesto, CA
- NPI 1487867503
-
- Primary Care Clinic/Center
- Jamestown, CA
- NPI 1356080022
-
- Allergy & Immunology Physician
- Glendale, CA
- NPI 1720290364
-
- Specialist
- Marina del Rey, CA
- NPI 1194846410
-
- Medical Physician Assistant
- Kennewick, WA
- NPI 1184171290
-
- Ambulatory Surgical Clinic/Center
- Spokane, WA
- NPI 1912252693
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147824000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757980800000",
"number": "1093767782",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 3649",
"city": "SPOKANE",
"state": "WA",
"postal_code": "992203649"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "11980 MOUNT VERNON AVE",
"city": "GRAND TERRACE",
"state": "CA",
"postal_code": "923135172",
"telephone_number": "909-864-1097",
"fax_number": "951-225-6879"
}
],
"practiceLocations": [
{
"address_1": "847 W Childs Ave",
"address_purpose": "LOCATION",
"city": "Merced",
"state": "CA",
"postal_code": "953416862",
"country_code": "US",
"telephone_number": "209-722-4842",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MAHAN-RICHARDS",
"first_name": "CASSANDRA",
"middle_name": "A",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-05-17",
"last_updated": "2025-09-16",
"certification_date": "2025-09-16",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "CA",
"license": "G53986",
"primary": true
},
{
"code": "207KA0200X",
"taxonomy_group": "",
"desc": "Allergy & Immunology, Allergy",
"state": "CA",
"license": "G53986",
"primary": false
},
{
"code": "207KA0200X",
"taxonomy_group": "",
"desc": "Allergy & Immunology, Allergy",
"state": "WA",
"license": "MD60286895",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "WASHINGTON STATE LICENSE",
"identifier": "MD60286895",
"state": "WA"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "00G646250",
"state": "CA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Grand Terrace, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 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.