Active NPI
Geiss Medical New York PC
- Family Medicine Physician
- Buffalo, NY
National Provider Identifier
1487539979
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- Legal business name
- GEISS MEDICAL NEW YORK PC
- Practice address
- 50 Fountain PLZ Ste 1400
Buffalo, NY 14202-2215 - Phone
- (855) 434-7763
- NPI assigned
- Aug 6, 2025
- 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
- (714) 702-5145
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
50 Fountain PLZ Ste 1400
Buffalo, NY 14202-2215
Mailing address
5 Hutton Centre Dr Ste 950
Santa Ana, CA 92707-8744
Phone (855) 434-7763
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
Enrollment records 1
National Provider Directory
National Provider DirectoryPractitioners & affiliated clinicians
Practitioners 11
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.
-
- General Practice Physician
- New York, NY
- NPI 1578592218
-
- Psychiatric/Mental Health Nurse Practitioner
- Santa Ana, CA
- NPI 1528890472
NY
-
- Neurology Physician
- San Francisco, CA
- NPI 1447612940
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1754438400000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1754438400000",
"number": "1487539979",
"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"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "50 FOUNTAIN PLZ STE 1400",
"city": "BUFFALO",
"state": "NY",
"postal_code": "142022215",
"telephone_number": "855-434-7763"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "GEISS MEDICAL NEW YORK PC",
"organizational_subpart": "NO",
"enumeration_date": "2025-08-06",
"last_updated": "2025-08-06",
"certification_date": "2025-08-06",
"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": "714-702-5145",
"authorized_official_credential": "DO"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Family Medicine",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Buffalo, NY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 6, 2025; 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.