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RIVERSIDE PHYSICIAN SERVICES INC
NPI 1639418429
Emergency Medicine in Williamsburg, VA

Active since February 14, 2013
1500 COMMONWEALTH AVE, WILLIAMSBURG, VA 23185(757) 585-2000 Get Directions Write a Review

NPPES record last updated: November 18, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Riverside Physician Services Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RIVERSIDE PHYSICIAN SERVICES INC (NPI 1639418429), doing business as Riverside Emergency Physicians, is a healthcare organization registered as an emergency medicine in Williamsburg, Virginia and active in the NPI registry since February 2013. The organization maintains 4 additional practice locations and lists Billie Jo Brown, Credentialing Manager, as its authorized official.

NPPES Registry Identity

NPI1639418429
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameRIVERSIDE PHYSICIAN SERVICES INC
Location Address1500 COMMONWEALTH AVEWilliamsburg, VA 23185-5229
Mailing AddressPo Box 75774Baltimore, MD 21275-5774 · (866) 898-7012 · Fax (904) 805-1037
Phone(757) 585-2000
Organization SubpartYesParent: Riverside Healthcare Association, Inc
Authorized OfficialBillie Jo BrownCredentialing Manager · (757) 316-5901
Enumeration DateFebruary 14, 2013
Last NPPES UpdateNovember 18, 2025
NPPES CertifiedNovember 18, 2025
✔ NPI 1639418429 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1500 COMMONWEALTH AVE, Williamsburg, VA 23185
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Other Names 1

Doing Business AsRiverside Emergency Physicians

Secondary Practice Locations 4

Location 1500 J Clyde Morris BlvdNewport News, VA 23601-1929 · Phone (757) 612-8154 · Fax (757) 594-2196
Location 219339 Benns Grant BlvdSmithfield, VA 23430-6393 · Phone (757) 357-3282
Location 37519 Hospital DrGloucester, VA 23061-4178 · Phone (804) 693-8899 · Fax (804) 693-8810
Location 420480 Market StOnancock, VA 23417-4309 · Phone (757) 302-2350 · Fax (757) 789-0615

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Riverside Physician Services Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

1,092

Medicare enrollment records show 1,092 clinicians reassign Medicare billing to Riverside Physician Services Inc, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 85 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 55

Nurse Practitioner236
Emergency Medicine139
Hospitalist112
Family Practice71
Internal Medicine66
Neurology53
Cardiovascular Disease (Cardiology)32
Obstetrics/Gynecology32
47 other specialties351

Nearest to this location (20)

See all 1,092
Emma Burch, MD
Emergency Medicine
NPI 1235667510
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2200
✔ PECOS✔ Accepts MedicareSame address
David Johnson, MD
Emergency Medicine
NPI 1437138559
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2250
✔ PECOS✔ Accepts MedicareSame address
Kazir Kabir, DO
Emergency Medicine
NPI 1275062200
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2200
✔ PECOS✔ Accepts MedicareSame address
Saskia Levine, MD
Hospitalist
NPI 1225771967
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2250
✔ PECOS✔ Accepts MedicareSame address
Samuel Tabacchi, DO
Emergency Medicine
NPI 1366905721
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2000
✔ PECOS✔ Accepts MedicareSame address
Michael Reynolds, M.D.
Hospitalist
NPI 1588954838
1500 COMMONWEALTH AVE
Williamsburg, VA 23185
(757) 585-2250
✔ PECOS✔ Accepts MedicareSame address
Roshan Acharya, M.D.
Pulmonary Disease
NPI 1386090686
3700 BATTERY BLVD STE 204
Williamsburg, VA 23185
(757) 645-3460
✔ PECOS✔ Accepts Medicare0.1 mi
Deborah Almeda, FNP-C
Nurse Practitioner
NPI 1831851922
3700 BATTERY BLVD # 304
Williamsburg, VA 23185
(757) 782-6450
✔ PECOS✔ Accepts Medicare0.1 mi
Matthew Laroe, M.D.
Endocrinology
NPI 1598290454
3700 BATTERY BLVD # 202
Williamsburg, VA 23185
(757) 645-3460
✔ PECOS✔ Accepts Medicare0.1 mi
John Long, MD
Gastroenterology
NPI 1386619393
457 MCLAWS CIR
Williamsburg, VA 23185
(757) 221-0750
✔ PECOS✔ Accepts Medicare0.4 mi
Shahwali Arezo, MD
Gastroenterology
NPI 1215975370
457 MCLAWS CIR SUITE 1
Williamsburg, VA 23185
(757) 221-0750
✔ PECOS✔ Accepts Medicare0.4 mi
Shannon Dishman, FNP
Nurse Practitioner
NPI 1396204319
457 MCLAWS CIR STE 1
Williamsburg, VA 23185
(757) 221-0750
✔ PECOS✔ Accepts Medicare0.4 mi
Tia Barr, AGNP
Nurse Practitioner
NPI 1740715549
263 MCLAWS CIR STE 105
Williamsburg, VA 23185
(757) 941-5600
✔ PECOS✔ Accepts Medicare0.6 mi
Brandy Washburn, FNP-C
Nurse Practitioner
NPI 1215599717
5700 WILLIAMSBURG LANDING DR
Williamsburg, VA 23185
(800) 554-5517
✔ PECOS✔ Accepts Medicare2.8 mi
Amy Americo, MD
Hospitalist
NPI 1437168507
240 GOOCH DRIVE
Williamsburg, VA 23185
(757) 221-4386
2.9 mi
Zachary Morie, DO
Family Practice
NPI 1730611245
301 COLLEGE ROW UNIT 9101
Williamsburg, VA 23185
(757) 782-6200
✔ PECOS✔ Accepts Medicare3.5 mi
Mark Chisam, M.D.
Radiation Oncology
NPI 1053381251
3901 TREYBURN DR SUITE B
Williamsburg, VA 23185
(757) 220-4900
✔ PECOS✔ Accepts Medicare3.8 mi
Amanda Stiteler, M.D.
Urology
NPI 1679918700
120 KINGS WAY STE 3200
Williamsburg, VA 23185
(757) 253-0051
✔ PECOS4.0 mi
Krystal Ainsley, MD
Internal Medicine
NPI 1588890545
120 KINGS WAY SUITE 1400
Williamsburg, VA 23185
(757) 345-2555
✔ PECOS✔ Accepts Medicare4.0 mi
Robert Cullom, MD
Ophthalmology
NPI 1467439042
120 KINGS WAY SUITE 1300
Williamsburg, VA 23185
(757) 345-3001
✔ PECOS4.0 mi
See all 1,092 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Riverside Physician Services Inc's NPI number?

The NPI number for Riverside Physician Services Inc is 1639418429. It was assigned to this organization in the NPPES registry on February 14, 2013. The provider is doing business as Riverside Emergency Physicians.

Where is Riverside Physician Services Inc located?

Riverside Physician Services Inc is located at 1500 Commonwealth Ave, Williamsburg, VA 23185. The listed phone number is (757) 585-2000.

What is Riverside Physician Services Inc's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Riverside Physician Services Inc enrolled in Medicare?

Yes. Riverside Physician Services Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Riverside Physician Services Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1,092 clinicians in 55 Medicare specialties reassign their Medicare billing to Riverside Physician Services Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (236), Emergency Medicine (139) and Hospitalist (112). Of these, 6 practice at this address and 85 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Riverside Physician Services Inc was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.