Riverside Physician Services Inc

Riverside Physician Services Inc is a healthcare organization registered as Family Medicine Physician in Williamsburg, VA, holding Type 2 (organization) NPI 1578804704 since 2013. The authorized official on file is James Lesnick, Vice President.

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NPI	1578804704
Entity type	Organization (Type 2)
Legal business name	Riverside Physician Services Inc
Other name	<Unavail>
Parent organization	Riverside Physician Services Inc
Practice address	3901 TREYBURN DR, SUITE 100, Williamsburg, VA, 23185
Phone	7572204751
Enumeration date	2013-03-13
Last updated in NPPES	2013-03-13

Authorized official

Name	James Lesnick
Title	Vice President
Phone	7575944006

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207R00000X	Internal Medicine Physician	Secondary	—	VA
207Q00000X	Family Medicine Physician	Primary	—	VA

Copy-ready billing details

Provider: Riverside Physician Services Inc
NPI: 1578804704
Taxonomy: 207Q00000X (Family Medicine Physician)
Address: 3901 TREYBURN DR, SUITE 100, Williamsburg, VA, 23185

Providers at this address

NPI	Name	Type	Specialty	Location
1053381251	Mark Chisam	Individual	Radiation Oncology Physician	Williamsburg, VA
1144387655	Williamsburg Radiation Therapy Center Inc	Organization	Radiology Clinic/Center	Williamsburg, VA
1679753644	Williamsburg Famiily Physicians, Inc.	Organization	Family Medicine Physician	Williamsburg, VA
1750543146	Jon Gray	Individual	Occupational Medicine Physician	Williamsburg, VA
1801170741	Riverside Physician Services Inc	Organization	Radiation Oncology Physician	Williamsburg, VA

Verify this record

Cross-check NPI 1578804704 against the authoritative CMS record: view Riverside Physician Services Inc on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

Where is Riverside Physician Services Inc located?

The practice location on file with NPPES is in Williamsburg, VA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2013-03-13. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-03-13.