Sydney Guo, MD
NPI 1619922291 · Vascular Surgery Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sydney Guo, MD is a Vascular Surgery Physician provider in Ventura, CA (NPI 1619922291).
Provider details
- NPI number
- 1619922291
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101239726 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,258 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 542 | $98 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 186 | $12 |
| Ultrasound of Hemodialysis Access93990 | 175 | $146 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 164 | $139 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 162 | $14 |
| Ultrasound of Leg Arteries Or Artery Grafts93925 | 96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 69 | 33 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 55 | 54 |
| Atorvastatin Calcium | 40 | 11 |
| Apixabanbrand: Eliquis | 35 | — |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 20 | — |
| Gabapentin | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$153 across 4 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
- 2006-05-23
- Last updated
- 2013-06-21
Frequently asked questions
- What is Sydney Guo's NPI number?
- Sydney Guo's National Provider Identifier (NPI) is 1619922291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sydney Guo's specialty?
- Sydney Guo is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Sydney Guo located?
- Sydney Guo's practice location on file with NPPES is 100 North Brent Street, Ventura, CA 93003.
- What is Sydney Guo's phone number?
- The practice phone number listed in the NPPES registry for Sydney Guo is (805) 643-3330.
- Does Sydney Guo accept Medicare?
- Sydney Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sydney Guo's NPI active?
- Yes — Sydney Guo's NPI (1619922291) is active in the NPPES registry as of the last update on 2013-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.