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
- Last updated
- Feb 3, 2026
- 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
Interoperability endpoints
- drgeiss@geissmed.com
Practitioners & affiliated clinicians
Practitioners 12
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.
-
- 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.