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DR. LEO GABRIEL MAFFEY M.D.
NPI 1336342450
Internal Medicine in Sylmar, CA

Active since June 06, 2007PECOS EnrolledAccepts Medicare Assignment
14445 OLIVE VIEW DR RM 6B119-H, SYLMAR, CA 91342(818) 364-3031 Get Directions Write a Review

NPPES record last updated: October 14, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Leo Gabriel Maffey M.d. NPPES

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

DR. LEO GABRIEL MAFFEY M.D. (NPI 1336342450) is an individual internal medicine provider in Sylmar, California, licensed in California (A94498) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2004).

NPPES Registry Identity

NPI1336342450
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. LEO GABRIEL MAFFEYCredential: M.D.
Location Address14445 OLIVE VIEW DR RM 6B119-HSylmar, CA 91342-1437
Mailing Address14445 Olive View Dr Rm 6b119-hSylmar, CA 91342-1437 · (818) 364-3031
Phone(818) 364-3031
Sole ProprietorYes
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2004
Enumeration DateJune 6, 2007
Last NPPES UpdateOctober 14, 2021
NPPES CertifiedOctober 14, 2021
✔ NPI 1336342450 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A94498
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14445 OLIVE VIEW DR RM 6B119-H, Sylmar, CA 91342
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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. Leo Gabriel Maffey 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 ID6103914767
PECOS Enrollment IDI20071114000576
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 Reassignment

Medicare enrollment records show Leo Maffey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
4.9 mi
Health Maintenance Organization
19105 GOLDEN VALLEY RD
Santa Clarita, CA 91387
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1316409410 (877) 608-0044

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 91342 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 14

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

DR. MONIQUE RUBIN DPM
Podiatrist
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. NEHA R. SHAH M.D.
Student in an Organized Health Care Education/Training Program
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. BABAK DAFTARI M.D.
Pediatrics
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. PHILLIS WU M.D.
Internal Medicine (Hematology & Oncology)
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. ABHISHEK SHARMA M.D.
Student in an Organized Health Care Education/Training Program
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. DEEPTHI KUMARI KARUNASIRI M.D.
Pathology (Anatomic Pathology)
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. ALAN ELWOOD QUILLIAN M.D. M.S.
Pediatrics
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031
DR. PAYMAN FATHIZADEH M.D.
Pathology (Anatomic Pathology)
14445 OLIVE VIEW DR RM 6B119-H
SYLMAR, CA 91342
Los Angeles County (818) 364-3031

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 Leo Maffey's NPI number?

The NPI number for Leo Maffey is 1336342450. It was assigned to this individual provider in the NPPES registry on June 6, 2007.

Where is Leo Maffey located?

Leo Maffey practices at 14445 Olive View Dr Rm 6b119-H, Sylmar, CA 91342. The listed phone number is (818) 364-3031.

What is Leo Maffey's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Leo Maffey enrolled in Medicare?

Yes. Leo Maffey 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 organization bills Medicare for Leo Maffey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leo Maffey reassigns Medicare benefits to Southern California Permanente Medical Group (Santa Clarita, CA). The 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 Leo Maffey'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 Leo Maffey was last updated on October 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.