Active NPI
Matthew Sims Fiess, PA
- Physician Assistant
- Gonzales, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- 54480
- Practice address
- 850 5TH St
Gonzales, CA 93926-9491 - Phone
- (831) 675-3601
- Fax
- (831) 675-3966
- NPI assigned
- May 16, 2017
- 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 |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | 54480 | CA | Primary |
Addresses
Primary practice location
850 5TH St
Gonzales, CA 93926-9491
Mailing address
100 Wilson Rd Ste 100
Monterey, CA 93940-7885
Phone (831) 242-8394
Other practice location 1
355 Abbott St Ste 100
Salinas, CA 93901-4484
Phone (831) 751-7070
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: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2017
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
850 5TH St
Gonzales, CA 93926-9491
Phone (831) 675-3601
Hospital & facility affiliations
- Community Hospital of the Monterey Peninsula
- Salinas Valley Health Medical Center
Merit-based Incentive Payment System (MIPS)
- Final score
- 85.47 of 100
- Quality
- 67.19
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 67.71
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Physician Assistant
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Svmhs Clinics | Current | Accepting new patients | |
| County of Monterey Behavioral Health | Current | Accepting new patients | |
| County of Monterey | Current | Accepting new patients | |
| Salinas Valley Hospitalist Medical Group, Inc | Past | Accepting new patients | |
| Salinas Urgent Care | Past | Accepting new patients | |
| Lancelot O Alexander MD a Medical Corporation | Past | Accepting new patients |
Locations
850 5th St
Gonzales, CA 93926
Phone (831) 657-3601
100 Wilson Rd
Ste 100
Monterey, CA 93940
Phone (831) 242-8301
1441 Constitution Blvd
Bldg 151
Salinas, CA 93906
Phone (831) 755-8640
1033 Los Palos Dr
Salinas, CA 93901
Phone (831) 424-2866
355 Abbott St
Ste 100
Salinas, CA 93901
Phone (831) 751-7070
Interoperability endpoints
- matthew.fiess.1@14789.direct.athenahealth.com
- mfiess11426@direct.svmh.com
Organizations & group practices 9
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.
-
- Rural Health Clinic/Center
- Gonzales, CA
- NPI 1437549284
-
- Multi-Specialty Clinic/Center
- Salinas, CA
- NPI 1093158347
-
- Pediatrics Physician
- Salinas, CA
- NPI 1457303356
-
- Urgent Care Clinic/Center
- Salinas, CA
- NPI 1568465466
-
- Family Medicine Physician
- Salinas, CA
- NPI 1134765381
-
- Adult Mental Health Clinic/Center
- Salinas, CA
- NPI 1053126003
-
- Specialist
- Salinas, CA
- NPI 1134279532
-
- Non-Pharmacy Dispensing Site
- Salinas, CA
- NPI 1962844787
-
- Internal Medicine Physician
- Salinas, CA
- NPI 1376572958
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Psychiatric Hospital Unit
- Monterey, CA
- NPI 1679562169
-
- General Acute Care Hospital
- Monterey, CA
- NPI 1932197258
-
- Rural Health Clinic/Center
- Gonzales, CA
- NPI 1437549284
Hospital
-
- General Acute Care Hospital
- Salinas, CA
- NPI 1750384079
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1494892800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1736812800000",
"number": "1477080869",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "100 WILSON RD STE 100",
"city": "MONTEREY",
"state": "CA",
"postal_code": "939407885",
"telephone_number": "831-242-8394"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "850 5TH ST",
"city": "GONZALES",
"state": "CA",
"postal_code": "939269491",
"telephone_number": "831-675-3601",
"fax_number": "831-675-3966"
}
],
"practiceLocations": [
{
"address_1": "355 Abbott St Ste 100",
"address_purpose": "LOCATION",
"city": "Salinas",
"state": "CA",
"postal_code": "939014484",
"country_code": "US",
"telephone_number": "831-751-7070",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "FIESS",
"first_name": "MATTHEW",
"middle_name": "SIMS",
"credential": "PA",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2017-05-16",
"last_updated": "2025-01-14",
"certification_date": "2025-01-14",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "CA",
"license": "54480",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Gonzales, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 14, 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.