Piyush Aggarwal, MD
Colorectal Surgery (Proctology) (CMS) · Walnut Creek, CA
At a glance
1479 Ygnacio Valley Rd # 200, Walnut Creek, CA 94598
Published activity: Colonoscopy · Skin biopsy. View counts and coverage
NPPES record updated Jan 24, 2019. 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
1479 Ygnacio Valley Rd # 200Walnut Creek, CA 94598
Additional reported practice locations
13400 E Shea BlvdScottsdale, AZ 852595452
Phone: 4803018000
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2005
- CMS specialties
- Colorectal Surgery (Proctology)
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- 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 |
|---|---|
| Colonoscopy | 57 |
| Skin biopsy | 1-10 |
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.
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 | $33.33 |
Reporting companies
| Company | Amount |
|---|---|
| DAVOL INC. | $33.33 |
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
- Colorectal Surgery (Proctology) (CMS)
- Taxonomy code
- 208C00000X
- Enumeration date
- Aug 28, 2007
- Record updated
- Jan 24, 2019
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208C00000X · Primary
License reported: A157104 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1479 Ygnacio Valley Rd # 200Walnut Creek, CA 94598
- Phone
- (925) 296-7340
- Fax
- (925) 296-9042
Mailing address
1450 TREAT BLVD # 300WALNUT CREEK, CA 945972168
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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