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GARY IGOR REYZIN MD
NPI 1871779769
Internal Medicine in Woodland Hills, CA

Active since January 10, 2008PECOS Enrolled
5601 DE SOTO AVE, WOODLAND HILLS, CA 91367(818) 719-2000 Get Directions Write a Review

NPPES record last updated: April 22, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gary Igor Reyzin Md NPPES

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

GARY IGOR REYZIN MD (NPI 1871779769) is an individual internal medicine provider in Woodland Hills, California, licensed in California (A102312) and active in the NPI registry since January 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871779769
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGARY IGOR REYZINCredential: MD
Location Address5601 DE SOTO AVEWoodland Hills, CA 91367-6701
Mailing Address15211 Vanowen St, Ste 105Van Nuys, CA 91405-3614 · (818) 719-2000
Phone(818) 719-2000
Sole ProprietorNo
Enumeration DateJanuary 10, 2008
Last NPPES UpdateApril 22, 2016
✔ NPI 1871779769 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 · A102312
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.
5601 DE SOTO AVE, Woodland Hills, CA 91367
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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 (PECOS)

Gary Igor Reyzin Md 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 Reassignment

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

Emmett Berg Do Inc. And Holvey Medical Group Inc.
7.3 mi
Internal Medicine
15211 VANOWEN ST, SUITE 105
Van Nuys, CA 91405
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1194850446 (818) 997-7711

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 91367 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.

TIMOTHY STARR MPT
Physical Therapist (Orthopedic)
5601 DE SOTO AVE, PHYSICAL THERAPY DEPARTMENT
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2930
MS. BONNIE JILL WEISSMAN P.T.A.
Technician, Other
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-3958
MANO SHANAA M.D.
Anesthesiology
5601 DE SOTO AVE, DEPT OF ANESTHESIA
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2261
DONNA M KARY CRNA
Nurse Anesthetist, Certified Registered
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2000
PAULA MONAGHAN CNM
Advanced Practice Midwife
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2000
DEAN T. NORA MD
Surgery (Surgical Oncology)
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2000
MARGARET M. STONE MD
Pediatrics (Pediatric Infectious Diseases)
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2000
KARIN L NIELSEN PA
Physician Assistant
5601 DE SOTO AVE
WOODLAND HILLS, CA 91367
Los Angeles County (818) 719-2000

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 Gary Reyzin's NPI number?

The NPI number for Gary Reyzin is 1871779769. It was assigned to this individual provider in the NPPES registry on January 10, 2008.

Where is Gary Reyzin located?

Gary Reyzin practices at 5601 De Soto Ave, Woodland Hills, CA 91367. The listed phone number is (818) 719-2000.

What is Gary Reyzin's specialty?

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

Is Gary Reyzin enrolled in Medicare?

Yes. Gary Reyzin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Reyzin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Reyzin reassigns Medicare benefits to Emmett Berg Do Inc. And Holvey Medical Group Inc. (Van Nuys, 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 Gary Reyzin'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 Gary Reyzin was last updated on April 22, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.