Brian J Keyashian, M.D.
Vascular Surgery (CMS) · Walnut Creek, CA
At a glance
2637 Shadelands Dr Ste A, Walnut Creek, CA 94598-2512
Published activity: Leg revascularization (restoring blood flow) · Removal of tissue · Skin biopsy. View counts and coverage
NPPES record updated Feb 11, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
2637 Shadelands Dr Ste AWalnut Creek, CA 94598-2512
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2010
- CMS specialties
- Vascular Surgery
Practice groups
Reported hospital affiliations
- Alta Bates Summit Medical Center Oakland, CA
- Alta Bates Summit Medical Center - Alta Bates Camp Berkeley, CA
- Contra Costa Regional Medical Center Martinez, CA
- John Muir Medical Center - Concord Campus Concord, CA
- John Muir Medical Center - Walnut Creek Campus Walnut Creek, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Leg revascularization (restoring blood flow) | 78 |
| Removal of tissue | 1-10 |
| Skin biopsy | 1-10 |
| Varicose vein removal | 59 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Reported clinician measures
Measures below describe reported clinician performance in the stated period. They do not form an overall HCPList rating, and reporting differs between clinicians.
Published clinical measures
- Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
- 23%2024Published MIPS performance rate. Lower rates indicate better performance for this inverse measure. Measure: MIPS_EC_001_overall. Collection type: EHR. Measure denominator: 165.
- Diabetes: Eye Exam
- 10%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_117_overall. Collection type: EHR. Measure denominator: 165.
- Documentation of Current Medications in the Medical Record
- 92%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_130_overall. Collection type: EHR. Measure denominator: 2073.
See all 10 reported measures
- Preventive Care and Screening: Screening for Depression and Follow-Up Plan
- 24%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_134_overall. Collection type: EHR. Measure denominator: 1090.
- Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
- 30%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_226_performance. Collection type: EHR. Measure denominator: 50.
- Controlling High Blood Pressure
- 67%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_236_overall. Collection type: EHR. Measure denominator: 232.
- Cervical Cancer Screening
- 55%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_309_overall. Collection type: EHR. Measure denominator: 191.
- Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
- 21%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_317_overall. Collection type: EHR. Measure denominator: 1040.
- Falls: Screening for Future Fall Risk
- 30%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_318_overall. Collection type: EHR. Measure denominator: 697.
- HIV Screening
- 69%2024Published MIPS performance rate. Higher rates indicate better performance for this measure. Measure: MIPS_EC_475_overall. Collection type: EHR. Measure denominator: 405.
Source: PY 2024 Clinician Public Reporting: MIPS Measures and Attestations · Published Sep 10, 2026.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $832.51 |
Reporting companies
| Company | Amount |
|---|---|
| MEDTRONIC, INC. | $412.87 |
| PHILIPS NORTH AMERICA LLC | $349.32 |
| BOSTON SCIENTIFIC CORPORATION | $50.72 |
| TACTILE SYSTEMS TECHNOLOGY INC | $19.60 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Vascular Surgery (CMS)
- Taxonomy code
- 2086S0129X
- Enumeration date
- Mar 3, 2012
- Record updated
- Feb 11, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
208600000X
License reported: 125.058017 IL
2086S0129X · Primary
License reported: A147947 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2637 Shadelands Dr Ste AWalnut Creek, CA 94598-2512
- Phone
- (925) 932-6330
- Fax
- (925) 932-0139
Mailing address
2637 SHADELANDS DRWALNUT CREEK, CA 945982512
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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