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DR. AARON MARCOS STRUMWASSER MD
NPI 1659695054
Surgery - Surgical Critical Care in Lynwood, CA

Active since March 15, 2010PECOS EnrolledAccepts Medicare Assignment
3630 E IMPERIAL HWY, LYNWOOD, CA 90262(310) 554-4127(310) 554-4197 Get Directions Write a Review

NPPES record last updated: September 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 16, 2025, Oct 19, 2020, Dec 22, 2015 (3 updates tracked since 2015).

About Dr. Aaron Marcos Strumwasser Md NPPES

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

DR. AARON MARCOS STRUMWASSER MD (NPI 1659695054) is an individual surgical critical care provider in Lynwood, California, licensed in California (A104373) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1659695054
Entity TypeIndividualMale
Primary Taxonomy2086S0102X
Provider Legal NameDR. AARON MARCOS STRUMWASSERCredential: MD
Location Address3630 E IMPERIAL HWYLynwood, CA 90262-2609
Mailing AddressPo Box 800Lynwood, CA 90262-0800 · (310) 554-4127 · Fax (310) 554-4197
Phone(310) 554-4127
Fax(310) 554-4197
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateMarch 15, 2010
Last NPPES UpdateSeptember 16, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2025
✔ NPI 1659695054 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in CA · A104373
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
3630 E IMPERIAL HWY, Lynwood, CA 90262
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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

Dr. Aaron Marcos Strumwasser Md 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 ID1557678679
PECOS Enrollment IDI20150922000755
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 Aaron Strumwasser reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Desert Trauma Surgeons, Inc.
0.1 mi
Surgical Critical Care
3630 E IMPERIAL HWY
Lynwood, CA 90262
  • Reassigned Medicare billing, California enrollment
  • 50 clinicians in this Medicare group
NPI 1144225426 (310) 554-4127
Usc Care Medical Group, Inc
9.2 mi
General Practice
1520 SAN PABLO ST
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 2,445 clinicians in this Medicare group
NPI 1902846306 (323) 442-5955
Oc Trauma Inc
40 mi
Trauma Surgery
26732 CROWN VALLEY PKWY STE 440
Mission Viejo, CA 92691
  • Reassigned Medicare billing, California enrollment
  • 28 clinicians in this Medicare group
NPI 1720516628 (949) 364-1007

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 5

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 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.
40 services32 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.
28 services20 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
14 services13 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
14 services14 patients
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.
12 services12 patients

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.

ST. FRANCIS MEDICAL CENTER - CCC
Clinic/Center (Adolescent and Children Mental Health)
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 900-8490
DR. NOOR-UL-AIN FATIMA KHAN DNAP, CRNA
Nurse Anesthetist, Certified Registered
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 900-8900
DR. GARY NEIL GARSHFIELD MD
Pathology (Anatomic Pathology & Clinical Pathology)
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 900-8900
KAREN CHANG MD
Emergency Medicine
3630 E IMPERIAL HWY, EMERGENCY DEPARTMENT
LYNWOOD, CA 90262
Los Angeles County (310) 900-4525
ERIKA C VIRAMONTES MA
Marriage & Family Therapist
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 603-6949
ADAM GOLDEN
Surgery (Surgical Critical Care)
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 554-4127
RAMESH LAMICHHANE
Student in an Organized Health Care Education/Training Program
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 900-8900
ANNA MARIE BAYYA
Registered Nurse (Psychiatric/Mental Health)
3630 E IMPERIAL HWY
LYNWOOD, CA 90262
Los Angeles County (310) 900-8210

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 Aaron Strumwasser's NPI number?

The NPI number for Aaron Strumwasser is 1659695054. It was assigned to this individual provider in the NPPES registry on March 15, 2010.

Where is Aaron Strumwasser located?

Aaron Strumwasser practices at 3630 E Imperial Hwy, Lynwood, CA 90262. The listed phone number is (310) 554-4127.

What is Aaron Strumwasser's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.

Is Aaron Strumwasser enrolled in Medicare?

Yes. Aaron Strumwasser 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 Aaron Strumwasser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Strumwasser reassigns Medicare benefits to 3 organizations: Desert Trauma Surgeons, Inc. (Lynwood, CA), Usc Care Medical Group, Inc (Los Angeles, CA) and Oc Trauma Inc (Mission Viejo, 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 Aaron Strumwasser'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 Aaron Strumwasser was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.