Patrick Giesemann, M.D
NPI 1649204785 · Family Medicine Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Giesemann, M.D is a Family Medicine Physician provider in Newport Beach, CA (NPI 1649204785).
Provider details
- NPI number
- 1649204785
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- A68293 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2025-08-27
- Certified
- 2025-08-27
Frequently asked questions
- What is Patrick Giesemann's NPI number?
- Patrick Giesemann's National Provider Identifier (NPI) is 1649204785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Giesemann's specialty?
- Patrick Giesemann is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Giesemann located?
- Patrick Giesemann's practice location on file with NPPES is 4041 Macarthur Blvd Ste 400, Newport Beach, CA 92660-2554.
- What is Patrick Giesemann's phone number?
- The practice phone number listed in the NPPES registry for Patrick Giesemann is (949) 736-6100.
- Does Patrick Giesemann accept Medicare?
- Patrick Giesemann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Giesemann's NPI active?
- Yes — Patrick Giesemann's NPI (1649204785) is active in the NPPES registry as of the last update on 2025-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.