Active NPI
Senior Doc Utah PC
- Family Medicine Physician
- Santa Ana, CA
National Provider Identifier
1760118673
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- Legal business name
- SENIOR DOC UTAH PC
- Practice address
- 5 Hutton Centre Dr Ste 950
Santa Ana, CA 92707-8744 - Phone
- (855) 434-7763
- Fax
- (949) 281-5550
- NPI assigned
- Jul 25, 2022
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- John Mark Geiss, DO
- Title
- Ceo
- Phone
- (855) 434-7763
Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | Primary |
Addresses
Primary practice location
5 Hutton Centre Dr Ste 950
Santa Ana, CA 92707-8744
Mailing address
5 Hutton Centre Dr Ste 950
Santa Ana, CA 92707-8744
Phone (855) 434-7763
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | drgeiss@geissmed.com | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in UT
Enrollment records 1
National Provider Directory
National Provider DirectoryLocations
5 Hutton Centre Dr
Ste 95
Santa Ana, CA 92707
4301 Garrity Blvd
Ste 103
Nampa, ID 83687
Phone (208) 463-0700
Practitioners & affiliated clinicians
Practitioners 12
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.
-
- Psychiatric/Mental Health Nurse Practitioner
- Santa Ana, CA
- NPI 1528890472
UT
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1658707200000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1770076800000",
"number": "1760118673",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5 HUTTON CENTRE DR STE 950",
"city": "SANTA ANA",
"state": "CA",
"postal_code": "927078744",
"telephone_number": "855-434-7763",
"fax_number": "949-281-5550"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5 HUTTON CENTRE DR STE 950",
"city": "SANTA ANA",
"state": "CA",
"postal_code": "927078744",
"telephone_number": "855-434-7763",
"fax_number": "949-281-5550"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "SENIOR DOC UTAH PC",
"organizational_subpart": "NO",
"enumeration_date": "2022-07-25",
"last_updated": "2026-02-03",
"certification_date": "2026-02-03",
"status": "A",
"authorized_official_last_name": "GEISS",
"authorized_official_first_name": "JOHN",
"authorized_official_middle_name": "MARK",
"authorized_official_title_or_position": "CEO",
"authorized_official_telephone_number": "855-434-7763",
"authorized_official_credential": "DO"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Family Medicine",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "drgeiss@geissmed.com",
"affiliation": "N",
"endpointDescription": "email",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "2592 N Santiago Blvd",
"city": "Orange",
"state": "CA",
"country_code": "US",
"postal_code": "928671862",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}Other providers in Santa Ana, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 3, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.