Matthew James Coates, M.D.
Surgery · Modesto, CA
At a glance
1001 Sylvan Ave Ste A, Modesto, CA 95350-1699
Published activity: Colonoscopy · Hernia repair - groin (open) · Melanoma (skin cancer) excision. View counts and coverage
NPPES record updated May 7, 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
1001 Sylvan Ave Ste AModesto, CA 95350-1699
Additional reported practice locations
644 E Harding Way Ste BStockton, CA 952046103
Phone: 2092487168
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2008
- CMS specialties
- General Surgery
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
- Central California Bariatric Surgery A Medical Corporation
- Sonora Community Hospital
- Surgical Associates Inc
- Sutter Valley Medical Foundation
Reported hospital affiliations
- Adventist Health Sonora Sonora, CA
- Dameron Hospital Stockton, CA
- Doctors Hospital Of Manteca Manteca, CA
- Doctors Medical Center Modesto, CA
- Memorial Medical Center Modesto, 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 | 1-10 |
| Hernia repair - groin (open) | 1-10 |
| Melanoma (skin cancer) excision | 1-10 |
| Removal of tissue | 1-10 |
| Spinal fusion | 16 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 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 | $330.93 |
Reporting companies
| Company | Amount |
|---|---|
| MEDTRONIC, INC. | $296.85 |
| BOSTON SCIENTIFIC CORPORATION | $34.08 |
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
- Surgery
- Taxonomy code
- 208600000X
- Enumeration date
- Sep 11, 2008
- Record updated
- May 7, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
208600000X · Primary
License reported: A105497 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1001 Sylvan Ave Ste AModesto, CA 95350-1699
- Phone
- (209) 248-7168
- Fax
- (209) 846-9641
Mailing address
1001 SYLVAN AVE STE AMODESTO, CA 953501699
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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