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PATRICK GIESEMANN M.D
NPI 1649204785
Family Medicine in Newport Beach, CA

Active since July 11, 2006PECOS EnrolledAccepts Medicare Assignment
4041 MACARTHUR BLVD STE 400, NEWPORT BEACH, CA 92660(949) 736-6100(949) 736-6199 Get Directions Write a Review

NPPES record last updated: August 27, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Patrick Giesemann M.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PATRICK GIESEMANN M.D (NPI 1649204785) is an individual family medicine provider in Newport Beach, California, licensed in California (A68293) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Albany Medical College Of Union University (1997).

NPPES Registry Identity

NPI1649204785
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NamePATRICK GIESEMANNCredential: M.D
Location Address4041 MACARTHUR BLVD STE 400Newport Beach, CA 92660-2554
Mailing Address4041 Macarthur Blvd Ste 400Newport Beach, CA 92660-2554 · (949) 736-6100 · Fax (949) 736-6199
Phone(949) 736-6100
Fax(949) 736-6199
Sole ProprietorNo
Medical School CMSAlbany Medical College Of Union UniversityGraduated 1997
Enumeration DateJuly 11, 2006
Last NPPES UpdateAugust 27, 2025
NPPES CertifiedAugust 27, 2025
✔ NPI 1649204785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A68293
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedFamily Medicine · Geriatric MedicineTaxonomy 207QG0300X · License A68293 (CA)
4041 MACARTHUR BLVD STE 400, Newport Beach, CA 92660
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Patrick Giesemann M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2365411055
PECOS Enrollment IDI20040929000698
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Patrick Giesemann reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hoag Clinic
4.4 mi
Primary Care
510 SUPERIOR AVE
Newport Beach, CA 92663
  • Reassigned Medicare billing, California enrollment
  • 529 clinicians in this Medicare group
NPI 1942799523 (949) 791-3001

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92660 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HOAG HOME HEALTH LLC
Home Health
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6100
HOAG AT HOME LLC
Physical Therapist
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6100
CARLO BELL
Physical Therapist
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6100
ANDREA MACIAS PT
Physical Therapist
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6100
DAVID ROUM DPT
Physical Therapist
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6100
INGUNA REEVES RN MSN ACNP-BC
Nurse Practitioner (Acute Care)
4041 MACARTHUR BLVD STE 400
NEWPORT BEACH, CA 92660
Orange County (949) 736-6102

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Patrick Giesemann's NPI number?

The NPI number for Patrick Giesemann is 1649204785. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Where is Patrick Giesemann located?

Patrick Giesemann practices at 4041 Macarthur Blvd Ste 400, Newport Beach, CA 92660. The listed phone number is (949) 736-6100.

What is Patrick Giesemann's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Patrick Giesemann enrolled in Medicare?

Yes. Patrick Giesemann is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Patrick Giesemann's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Giesemann reassigns Medicare benefits to Hoag Clinic (Newport Beach, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Patrick Giesemann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Patrick Giesemann was last updated on August 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.