DR. BELEN ALEDIA MATIAS M.D.
NPI 1881874691
Internal Medicine - Infectious Disease in Northridge, CA

Q: What is Belen Matias's NPI number?

The NPI number for Belen Matias is 1881874691. It was assigned to this individual provider in the NPPES registry on November 8, 2007.

Q: What is Belen Matias's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Belen Matias was last updated on November 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since November 08, 2007PECOS Enrolled

17075 DEVONSHIRE ST, SUITE# 305, NORTHRIDGE, CA 91325(818) 363-0110(818) 363-0160 Get Directions Write a Review

NPPES record last updated: November 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Belen Aledia Matias M.d. NPPES

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

DR. BELEN ALEDIA MATIAS M.D. (NPI 1881874691) is an individual infectious disease provider in Northridge, California, licensed in California (A056439) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881874691

Entity TypeIndividualFemale

Primary Taxonomy207RI0200X

Provider Legal NameDR. BELEN ALEDIA MATIASCredential: M.D.

Location Address17075 DEVONSHIRE ST, SUITE# 305Northridge, CA 91325-1600

Mailing Address17075 Devonshire St, Suite# 305Northridge, CA 91325-1600 · (818) 363-0110 · Fax (818) 363-0160

Phone(818) 363-0110

Fax(818) 363-0160

Sole ProprietorNo

Enumeration DateNovember 8, 2007

✔ NPI 1881874691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CA · A056439

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

17075 DEVONSHIRE ST, Northridge, CA 91325

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Other Identifiers 3

Medicare UPINH28529CA

Medicaid00A564390CA

Medicare PINA56439ACA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Belen Aledia Matias M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

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

Belen Matias, MD A Medical Corp

Same address

Infectious Disease

17075 DEVONSHIRE ST, SUITE 305
Northridge, CA 91325

Reassigned Medicare billing, California enrollment

NPI 1881706190 (818) 363-0110

Southern California Infectious Disease Physicians Medical Group Inc

39 mi

Infectious Disease

18335 E VALLEY BLVD
La Puente, CA 91744

Reassigned Medicare billing, California enrollment
5 clinicians in this Medicare group

NPI 1114347507 (626) 810-3330

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.

355 services76 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.

143 services56 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.

80 services73 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.

14 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91325 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

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 20

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

ROBERT F. ROBERTSON A MEDICAL CORP.

Internal Medicine (Pulmonary Disease)

17075 DEVONSHIRE ST, #205
NORTHRIDGE, CA 91325

Los Angeles County (661) 272-0240

DR. FAWZY SAMY BASTA SR. MD

Psychiatry & Neurology (Psychiatry)

17075 DEVONSHIRE ST, STE 204
NORTHRIDGE, CA 91325

Los Angeles County (818) 368-8929

SIAMAK ETEHAD MD INC A MEDICAL CORPORATION

Internal Medicine

17075 DEVONSHIRE ST, #100
NORTHRIDGE, CA 91325

Los Angeles County (818) 363-2077

MEHMET H OZGUR MD

Neurological Surgery

17075 DEVONSHIRE ST, SUITE 106
NORTHRIDGE, CA 91325

Los Angeles County (818) 366-8250

GHOLAMREZA NAGADEH BONABI M.D.,

Specialist

17075 DEVONSHIRE ST, SUITE 300
NORTHRIDGE, CA 91325

Los Angeles County (818) 368-4212

MRS. KARINE SETYAN

Nurse Practitioner (Psychiatric/Mental Health)

17075 DEVONSHIRE ST
NORTHRIDGE, CA 91325

Los Angeles County (818) 368-8572

DORIS A BARIZO DMD

Dentist (General Practice)

17075 DEVONSHIRE ST, SUITE 208
NORTHRIDGE, CA 91325

Los Angeles County (818) 831-3365

CHARLES W. CHIDSEY III, M.D., A PROFESSIONAL CORPORATION

Surgery

17075 DEVONSHIRE ST, SUITE 106
NORTHRIDGE, CA 91325

Los Angeles County (818) 363-9732

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 Belen Matias's NPI number?

The NPI number for Belen Matias is 1881874691. It was assigned to this individual provider in the NPPES registry on November 8, 2007.

Where is Belen Matias located?

Belen Matias practices at 17075 Devonshire St Suite# 305, Northridge, CA 91325. The listed phone number is (818) 363-0110.

What is Belen Matias's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Belen Matias enrolled in Medicare?

Yes. Belen Matias is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Belen Matias's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Belen Matias reassigns Medicare benefits to 2 organizations: Belen Matias, MD A Medical Corp (Northridge, CA) and Southern California Infectious Disease Physicians Medical Group Inc (La Puente, 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 Belen Matias'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 Belen Matias was last updated on November 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.