Garabed Nishanian, MD
NPI 1336297290 · Vascular Surgery Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garabed Nishanian, MD is a Vascular Surgery Physician provider in Irvine, CA (NPI 1336297290).
Provider details
- NPI number
- 1336297290
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A52537 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,225 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 232 | $31 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 183 | $36 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 152 | $20 |
| Injection of Chemical Agent Into Multiple Incompetent Veins of Same Leg Using Ultrasound Guidance36466 | 113 | $1,516 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 87 | $92 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 84 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$258 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 2015-10-15
Frequently asked questions
- What is Garabed Nishanian's NPI number?
- Garabed Nishanian's National Provider Identifier (NPI) is 1336297290, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garabed Nishanian's specialty?
- Garabed Nishanian is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Garabed Nishanian located?
- Garabed Nishanian's practice location on file with NPPES is 16100 Sand Canyon Ave, Irvine, CA 92618-3716.
- What is Garabed Nishanian's phone number?
- The practice phone number listed in the NPPES registry for Garabed Nishanian is (949) 429-8840.
- Does Garabed Nishanian accept Medicare?
- Garabed Nishanian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garabed Nishanian's NPI active?
- Yes — Garabed Nishanian's NPI (1336297290) is active in the NPPES registry as of the last update on 2015-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.