John Mark Geiss D.O. Medical Corporation
NPI 1588076673 · Family Medicine Physician · Orange, CA
John Mark Geiss D.O. Medical Corporation is a Family Medicine Physician organization in Orange, CA (NPI 1588076673).
Provider details
- NPI number
- 1588076673
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Geiss, Owner(714) 577-2271
- License
- 20A12647 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-23
- Last updated
- 2019-04-03
Frequently asked questions
- What is John Mark Geiss D.O. Medical Corporation's NPI number?
- John Mark Geiss D.O. Medical Corporation's National Provider Identifier (NPI) is 1588076673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Mark Geiss D.O. Medical Corporation?
- John Mark Geiss D.O. Medical Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Mark Geiss D.O. Medical Corporation located?
- John Mark Geiss D.O. Medical Corporation's practice location on file with NPPES is 2592 N Santiago Blvd, Orange, CA 92867-1862.
- What is John Mark Geiss D.O. Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for John Mark Geiss D.O. Medical Corporation is (714) 577-2271.
- Who is the authorized official for John Mark Geiss D.O. Medical Corporation?
- The authorized official listed on John Mark Geiss D.O. Medical Corporation's NPPES record is John Geiss, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Mark Geiss D.O. Medical Corporation's NPI active?
- Yes — John Mark Geiss D.O. Medical Corporation's NPI (1588076673) is active in the NPPES registry as of the last update on 2019-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.