Belen Aledia Matias, M.D.
Infectious Disease Physician · Northridge, CA
Belen Aledia Matias, M.D. is an infectious disease physician with a practice address in Northridge, California, and NPI 1881874691, issued on Nov 8, 2007. Check the license (California A056439, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Belen Aledia Matias
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A056439 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17075 Devonshire St, Northridge, CA 91325
- Phone
- (818) 363-0110
- Enumerated
- Nov 8, 2007
- Record last updated
- Nov 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (818) 363-0160
- Medicaid ID
- 00A564390 CA
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 17075 Devonshire St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Belen Aledia Matias in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A056439Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average infectious disease physician in 2024
20 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $19.49
1 payment: food and beverage; the largest payer was Mylan Specialty L.P. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Belen Aledia Matias among 1,119 infectious disease physician records in California
Belen Aledia Matias, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 41% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Northridge → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Edwin Yellin, MDNorthridge, CA 913241467670307
- Wendy Clough, M.D.Newhall, CA 913211225077175
- Ellsworth Pryor, M.DNewhall, CA 913211952344988
- Christine Balekian, M.D.Sylmar, CA 913421528216645
- Michael Ben-Aderet, MDSylmar, CA 913421669730990
- Suzanne Donovan, M.D.Sylmar, CA 913421710014287
- Arthur Jeng, M.D.Sylmar, CA 913421013070499
- Caitlin Reed, M.D.Sylmar, CA 913421073634184
Common questions
What is Belen Aledia Matias, M.D.'s NPI number?
Belen Aledia Matias, M.D.'s National Provider Identifier (NPI) is 1881874691, issued on Nov 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Belen Aledia Matias, M.D. located?
The NPPES record lists a practice address at 17075 Devonshire St, Northridge, CA, 91325. Phone: (818) 363-0110. Providers update this record themselves, so call before visiting.
How can I verify Belen Aledia Matias, M.D.'s license?
NPPES lists California license number A056439, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Belen Aledia Matias, M.D. prescribe under Medicare Part D?
In 2024, Belen Aledia Matias, M.D. had 20 Medicare Part D claims; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.