Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Sydney Shuo-Yi Guo, MD

Individual provider Vascular Surgery Physician · NPI 1619922291

Dr. Sydney Shuo-Yi Guo, MD practises Vascular Surgery in Ventura, California. Graduated from New York University School of Medicine in 1997, 29 years ago. Practices with Kevin M Casey MD APMC, a 4-clinician group and accepts Medicare assignment. Licensed in California and Virginia.

Years since qualifying
29
Trained at
New York University School of Medicine
Licensed in
CA, VA
In the registry since
2006
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 N Brent St Ste 201
Ventura, CA 93003 Not confirmed with CMS for 13 years — call before visiting
Phone: (805) 643-3330
Fax: (805) 643-3331
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Vascular Surgery Physician (primary) Taxonomy 2086S0129X · Licence A68397 (CA)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence 0101239726 (VA)
Surgery Physician Taxonomy 208600000X · Licence 0101239726 (VA)
Specialist Taxonomy 174400000X · Licence 0101239726 (VA)

Record details

NPI number1619922291
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2006
Last updated in NPPESJune 21, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyVASCULAR SURGERY
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Kevin M Casey Md Apmc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Leg revascularization (restoring blood flow) 67 times · 94th percentile
Varicose vein removal 42 times · 71st percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients482
Services billed 2,548 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • St Johns Regional Medical Center Hospital · Oxnard, CA · listed as St Johns Regional Imaging Center LLC
  • Community Memorial Hospital - Ojai Hospital · Ojai, CA
  • Community Memorial Hospital - Ventura Hospital · Ventura, CA

Colleagues at Kevin M Casey MD APMC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Ventura