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GABRIEL ESTREMERA M.D.
NPI 1891038055
Surgery - Trauma Surgery in Pomona, CA

Active since April 05, 2013PECOS EnrolledAccepts Medicare Assignment
76.26/100
CMS Quality Rating
160 E ARTESIA ST STE 310, POMONA, CA 91767(909) 865-9500 Get Directions Write a Review

NPPES record last updated: September 13, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 13, 2019, Nov 12, 2015 (2 updates tracked since 2015).

About Gabriel Estremera M.d. NPPES

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

GABRIEL ESTREMERA M.D. (NPI 1891038055) is an individual trauma surgery provider in Pomona, California, licensed in California (A163081) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, maintains a secondary practice location in East Brunswick, and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (2013).

NPPES Registry Identity

NPI1891038055
Entity TypeIndividualMale
Primary Taxonomy2086S0127X
Provider Legal NameGABRIEL ESTREMERACredential: M.D.
Location Address160 E ARTESIA ST STE 310Pomona, CA 91767-2922
Mailing Address840s Wood St 376-csnChicago, IL 60612-4325 · (312) 996-6765
Phone(909) 865-9500
Sole ProprietorYes
Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 2013
Enumeration DateApril 5, 2013
Last NPPES UpdateSeptember 13, 20192 updates tracked since enumeration
✔ NPI 1891038055 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
License✔ Licensed in CA · A163081
Definition
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
Also ListedSurgeryTaxonomy 208600000X · License A163081 (CA)
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License A163081 (CA)
160 E ARTESIA ST STE 310, Pomona, CA 91767
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Secondary Practice Location 1

Location 112 Bruning RdEast Brunswick, NJ 08816-1350 · Phone (732) 406-1286

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

Gabriel Estremera 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 ID7315257672
PECOS Enrollment IDI20191016002895
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

3

Medicare enrollment records show Gabriel Estremera reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Institute Of Trauma And Acute Care Inc
Same address
Trauma Surgery
160 E ARTESIA ST STE 310
Pomona, CA 91767
  • Reassigned Medicare billing, California enrollment
  • 12 clinicians in this Medicare group
NPI 1740711324 (909) 469-9477
Pih Health Physicians
6.9 mi
Interventional Cardiology
685 N 13TH AVE STE 9
Upland, CA 91786
  • Reassigned Medicare billing, California enrollment
  • 840 clinicians in this Medicare group
NPI 1437815313 (909) 949-3977
Acute Care Surgery Medical Group, Inc.
373 mi
Surgery
2801 K STREET SUITE 440
Sacramento, CA 95816
  • Reassigned Medicare billing, California enrollment
  • 266 clinicians in this Medicare group
NPI 1700069549 (916) 441-0400

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
69 services46 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
35 services27 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
15 services13 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
11 services11 patients

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.

76.26/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality62.74
Improvement Activities40
Cost59.29

Other Providers at the Same Location NPPES 4

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

JOANA CHAN LU PA-C
Physician Assistant (Surgical)
160 E ARTESIA ST STE 310
POMONA, CA 91767
Los Angeles County (909) 865-9520
STEPHANIE HERNANDEZ
Physician Assistant
160 E ARTESIA ST STE 310
POMONA, CA 91767
Los Angeles County (909) 469-9477
THE INSTITUTE OF TRAUMA AND ACUTE CARE INC
Surgery (Trauma Surgery)
160 E ARTESIA ST STE 310
POMONA, CA 91767
Los Angeles County (909) 469-9477
KELKER MANAGEMENT CORP
Surgery
160 E ARTESIA ST STE 310
POMONA, CA 91767
Los Angeles County (174) 330-1844

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 Gabriel Estremera's NPI number?

The NPI number for Gabriel Estremera is 1891038055. It was assigned to this individual provider in the NPPES registry on April 5, 2013.

Where is Gabriel Estremera located?

Gabriel Estremera practices at 160 E Artesia St Ste 310, Pomona, CA 91767. The listed phone number is (909) 865-9500.

What is Gabriel Estremera's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is Gabriel Estremera enrolled in Medicare?

Yes. Gabriel Estremera 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 Gabriel Estremera's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gabriel Estremera reassigns Medicare benefits to 3 organizations: The Institute Of Trauma And Acute Care Inc (Pomona, CA), Pih Health Physicians (Upland, CA) and Acute Care Surgery Medical Group, Inc. (Sacramento, 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 Gabriel Estremera'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 Gabriel Estremera was last updated on September 13, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.