Active NPI
Jon R Maust, M.D.
- Psychiatry Physician
- Fairfield, CA
National Provider Identifier
1356676464
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- 04-35230
- Practice address
- 101 Bodin Cir
Fairfield, CA 94535-1809 - Phone
- (707) 423-3000
- NPI assigned
- Oct 7, 2009
- 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 |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | TRAINING CERT# PEND | OH | |
| Psychiatry Physician | 2084P0800X | 04-35230 | KS | Primary |
Addresses
Primary practice location
101 Bodin Cir
Fairfield, CA 94535-1809
Mailing address
101 Bodin Cir
Attn: Gme
Fairfield, CA 94535-1809
Phone (707) 423-7612
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 04-35230 | KS | MD | Psychiatry Physician |
| TRAINING CERT# PEND | OH | MD | Psychiatry Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1254873600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781740800000",
"number": "1356676464",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "101 BODIN CIR",
"address_2": "ATTN: GME",
"city": "FAIRFIELD",
"state": "CA",
"postal_code": "945351809",
"telephone_number": "707-423-7612"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "101 BODIN CIR",
"city": "FAIRFIELD",
"state": "CA",
"postal_code": "945351809",
"telephone_number": "707-423-3000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MAUST",
"first_name": "JON",
"middle_name": "R",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2009-10-07",
"last_updated": "2026-06-18",
"certification_date": "2026-06-18",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "OH",
"license": "TRAINING CERT# PEND",
"primary": false
},
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "KS",
"license": "04-35230",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Fairfield, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.