John Mark Geiss

Primary Care Physicians — General Practice · Senior care facility

Primary Care Physicians — General PracticeMedium data-match confidence

Directory record — please verify

This listing comes from Align Senior Care California HMO I-SNP Provider Directory and was updated July 3, 2026. It does not confirm Medicare coverage, plan network, referral or prior authorization, offered services, or current availability. Verify each item directly before scheduling.

At a glance

John Mark Geiss is listed as a Primary Care Physicians — General Practice in Placentia, CA. Call (714) 577-2271 to confirm current participation and availability.

Services & care categories

Physician / specialist

Medicare questions to ask

1Do you currently accept Medicare assignment for these services?
2Is this location in-network for my Medicare Advantage plan?
3Will I need a referral or prior authorization before my visit?
4What out-of-pocket costs should I expect under Medicare?
5Do you provide the specific care I need (pain management, PM&R, behavioral health, or mild TBI)?

Location

Frequently asked questions

Does John Mark Geiss accept Medicare?

John Mark Geiss is an imported senior-care record. Confirm Medicare participation and network status directly with the facility before scheduling.

Where is John Mark Geiss located?

John Mark Geiss is located at 151 N Kraemer Blvd Ste 100, Placentia, CA 92870.

What is the phone number for John Mark Geiss?

You can reach John Mark Geiss at (714) 577-2271.

What care does John Mark Geiss offer?

Listed services include Physician / specialist. Verify availability with the facility.

Source

Align Senior Care California HMO I-SNP Provider Directory (align_ca_providers.csv).

County: Orange · Accepting new patients: Yes · Available as of: 2023-10-01

How directory records are sourced and updated

Medicare questions to ask

1Do you currently accept Medicare assignment for these services?
2Is this location in-network for my Medicare Advantage plan?
3Will I need a referral or prior authorization before my visit?
4What out-of-pocket costs should I expect under Medicare?
5Do you provide the specific care I need (pain management, PM&R, behavioral health, or mild TBI)?

Location

Frequently asked questions

Does John Mark Geiss accept Medicare?

John Mark Geiss is an imported senior-care record. Confirm Medicare participation and network status directly with the facility before scheduling.

Where is John Mark Geiss located?

John Mark Geiss is located at 151 N Kraemer Blvd Ste 100, Placentia, CA 92870.

What is the phone number for John Mark Geiss?

You can reach John Mark Geiss at (714) 577-2271.

What care does John Mark Geiss offer?

Listed services include Physician / specialist. Verify availability with the facility.

Source

Align Senior Care California HMO I-SNP Provider Directory (align_ca_providers.csv).

County: Orange · Accepting new patients: Yes · Available as of: 2023-10-01

How directory records are sourced and updated