Active NPI
Mason Chan, MD
- Psychiatry Physician
- Tucson, AZ
National Provider Identifier
1275282725
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- 0101279440
- Practice address
- 4175 S Alamo Ave
Tucson, AZ 85707-4402 - Phone
- (520) 228-2778
- NPI assigned
- Mar 22, 2022
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | 0101279440 | VA | Primary |
| General Practice Physician | 208D00000X | 0101279440 | VA |
Addresses
Primary practice location
4175 S Alamo Ave
Tucson, AZ 85707-4402
Mailing address
4175 S Alamo Ave
Davis Monthan Afb, AZ 85707-4402
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 0101279440 | VA | MD | General Practice Physician |
Interoperability endpoints
- mchan33884@direct.utmsa.com
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1647907200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1785801600000",
"number": "1275282725",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4175 S ALAMO AVE",
"city": "DAVIS MONTHAN AFB",
"state": "AZ",
"postal_code": "857074402"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4175 S ALAMO AVE",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857074402",
"telephone_number": "520-228-2778"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHAN",
"first_name": "MASON",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-03-22",
"last_updated": "2026-08-04",
"certification_date": "2026-08-04",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "VA",
"license": "0101279440",
"primary": true
},
{
"code": "208D00000X",
"taxonomy_group": "",
"desc": "General Practice",
"state": "VA",
"license": "0101279440",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Tucson, AZ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 2026; 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.