GARY E DENG MD
NPI 1780655233
Integrative Medicine in Irvine, CA
About Gary E Deng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GARY E DENG MD (NPI 1780655233) is an individual integrative medicine provider in Irvine, California, licensed in California (C198282) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Gary E Deng 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.
Medicare Billing Reassignments
2Medicare enrollment records show Gary Deng reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 525 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 7 clinicians in this Medicare group
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 6
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IRVINE, CA 92617
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 Deng's NPI number?
The NPI number for Gary Deng is 1780655233. It was assigned to this individual provider in the NPPES registry on January 31, 2006.
Where is Gary Deng located?
Gary Deng practices at 856 Health Sciences Rd Ste 2600, Irvine, CA 92617. The listed phone number is (949) 824-7000.
What is Gary Deng's specialty?
The primary specialty registered for this NPI is Integrative Medicine with taxonomy code 202D00000X.
Is Gary Deng enrolled in Medicare?
Yes. Gary Deng 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 Gary Deng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gary Deng reassigns Medicare benefits to 2 organizations: Uc Regents (Orange, CA) and Mskcc Integrative Medicine Group (New York, NY). 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 Gary Deng'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 Deng was last updated on February 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Gary E Deng, MD · NPI 1780655233
Integrative Medicine physician in Irvine, California. Individual provider, active in the CMS NPPES registry since January 31, 2006.
## Identity
- **NPI:** 1780655233 (Entity type: Individual)
- **Enumerated:** January 31, 2006
- **Primary specialty:** Integrative Medicine · taxonomy 202D00000X
- **State license:** C198282 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 856 HEALTH SCIENCES RD STE 2600, Irvine, CA 92617-3058
- **Phone:** (949) 824-7000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Uc Regents (NPI 1003864174, Orange, CA); Mskcc Integrative Medicine Group (NPI 1558332189, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** February 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1780655233) · Data from the CMS NPPES public registry.