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JUSTIN ALLAN MAUSER M.D.
NPI 1134624398
Family Medicine in Long Beach, CA

Active since March 28, 2018PECOS EnrolledAccepts Medicare Assignment
76.74/100
CMS Quality Rating
450 E SPRING ST STE 1, LONG BEACH, CA 90806(562) 933-0050(562) 933-0079 Get Directions Write a Review

NPPES record last updated: March 25, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 27, 2023, Jul 2, 2021, Mar 28, 2018 (3 updates tracked since 2018).

About Justin Allan Mauser M.d. NPPES

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

JUSTIN ALLAN MAUSER M.D. (NPI 1134624398) is an individual family medicine provider in Long Beach, California, licensed in California (A164474) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (2018).

NPPES Registry Identity

NPI1134624398
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJUSTIN ALLAN MAUSERCredential: M.D.
Location Address450 E SPRING ST STE 1Long Beach, CA 90806-1625
Mailing Address450 E Spring St Ste 1Long Beach, CA 90806-1625 · (562) 933-0050 · Fax (562) 933-0079
Phone(562) 933-0050
Fax(562) 933-0079
Sole ProprietorYes
Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2018
Enumeration DateMarch 28, 2018
Last NPPES UpdateMarch 25, 20243 updates tracked since enumeration
NPPES CertifiedMarch 25, 2024
✔ NPI 1134624398 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 · A164474
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
450 E SPRING ST STE 1, Long Beach, CA 90806
Open in Google Maps ↗

Other Names 1

Professional Name (2)Justin A Mauser M.d.

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

Justin Allan Mauser 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 ID4789016148
PECOS Enrollment IDI20210714000452
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 Reassignments

2

Medicare enrollment records show Justin Mauser reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group
6.4 mi
Health Maintenance Organization
25825 VERMONT AVE
Harbor City, CA 90710
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1598797011 (310) 325-5111
Memorialcare Medical Foundation
15 mi
Clinic/Center
17360 BROOKHURST ST
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 948 clinicians in this Medicare group
NPI 1205167350 (877) 696-3622

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 90806 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.74/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.94
Promoting Interoperability78
Improvement Activities40
Cost55.12

Other Providers at the Same Location NPPES 20

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

DR. JOANN Y CHANG M.D.
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
ALEXANDER GUEVARA
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
DR. ROCHELLE LACAZE
Family Medicine
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
KATHLEEN D. TOR MD
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
TONY HSU M.D.
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
EMMA ASHER
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050
VICTORIA ANDREA SOLOMON MD
Student in an Organized Health Care Education/Training Program
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0500
PAMELA MARIA WADE
Nurse Practitioner
450 E SPRING ST STE 1
LONG BEACH, CA 90806
Los Angeles County (562) 933-0050

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 Justin Mauser's NPI number?

The NPI number for Justin Mauser is 1134624398. It was assigned to this individual provider in the NPPES registry on March 28, 2018. The provider is also known as Justin A Mauser M.D..

Where is Justin Mauser located?

Justin Mauser practices at 450 E Spring St Ste 1, Long Beach, CA 90806. The listed phone number is (562) 933-0050.

What is Justin Mauser's specialty?

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

Is Justin Mauser enrolled in Medicare?

Yes. Justin Mauser 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 organizations bill Medicare for Justin Mauser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Justin Mauser reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Harbor City, CA) and Memorialcare Medical Foundation (Fountain Valley, CA). Each 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 Justin Mauser'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 Justin Mauser was last updated on March 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.