NORTHBAY PHYSICIANS SURGERY CENTER LLC
NPI 1003015843
Clinic/Center - Ambulatory Surgical in Vacaville, CA

Q: What is Northbay Physicians Surgery Center LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

Active since July 12, 2007

1006 NUT TREE ROAD, VACAVILLE, CA 95687(707) 446-2800(707) 426-9700 Get Directions Write a Review

NPPES record last updated: May 1, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 1, 2026, Jan 28, 2026, Jun 11, 2025 and 1 more (4 updates tracked since 2025).

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About Northbay Physicians Surgery Center Llc NPPES

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

NORTHBAY PHYSICIANS SURGERY CENTER LLC (NPI 1003015843), doing business as Northbay Physicians Surgery Center, Llc, is a healthcare organization registered as an ambulatory surgical in Vacaville, California and active in the NPI registry since July 2007. The organization lists Matthew Toomey, Vp, Revenue Cycle Management, as its authorized official.

NPPES Registry Identity

NPI1003015843

Entity TypeOrganization

Primary Taxonomy261QA1903X

Legal Business NameNORTHBAY PHYSICIANS SURGERY CENTER LLC

Location Address1006 NUT TREE ROADVacaville, CA 95687

Mailing Address1006 Nut Tree RdVacaville, CA 95687-4100 · (707) 446-2800 · Fax (707) 446-9700

Phone(707) 446-2800

Fax(707) 426-9700

Organization SubpartNo

Authorized OfficialMatthew ToomeyVp, Revenue Cycle Management · (707) 646-3403

Enumeration DateJuly 12, 2007

Last NPPES UpdateMay 1, 20264 updates tracked since enumeration

NPPES CertifiedMay 1, 2026

✔ NPI 1003015843 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities

Taxonomy Code261QA1903X

1006 NUT TREE ROAD, Vacaville, CA 95687

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Other Names 2

Doing Business AsNorthbay Physicians Surgery Center, Llc

Doing Business AsThe Surgery Center

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Northbay Physicians Surgery Center Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 17 clinicians reassign Medicare billing to Northbay Physicians Surgery Center LLC, which bills Medicare for the services they deliver. Of these, 12 practice within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 10

Gastroenterology4

General Surgery2

Obstetrics/Gynecology2

Podiatry2

Sports Medicine2

Orthopedic Surgery1

Otolaryngology1

Pain Management1

2 other specialties2

Clinicians, nearest first (17)

Robert Peterson, M.D.

Sports Medicine

NPI 1093717951

1010 NUT TREE RD STE 200
Vacaville, CA 95687

(707) 624-7900

✔ PECOS✔ Accepts Medicare0.1 mi

Suk Charles Whang, M.D.

Gastroenterology

NPI 1619041316

DAVID GRANT MEDICAL CENTER 101 BODIN CIRCLE
Travis Afb, CA 94535

(707) 423-3040

✔ PECOS✔ Accepts Medicare5.5 mi

Douglas Taylor, D.O.

Gastroenterology

NPI 1649699737

60 MDG/FFNM20 101 BODIN CIR
Travis Afb, CA 94535

(210) 313-1759

✔ PECOS✔ Accepts Medicare5.8 mi

Michael Krier, M.D.

Gastroenterology

NPI 1497808414

101 BODIN CIR
Fairfield, CA 94535

(707) 423-4501

✔ PECOS✔ Accepts Medicare5.9 mi

Christian Pingree, M.D.

Otolaryngology

NPI 1801259957

101 BODIN CIR
Fairfield, CA 94535

(707) 423-7166

✔ PECOS✔ Accepts Medicare6.0 mi

Cynthia Pena, MD

Pain Management

NPI 1417031717

1101 B GALE WILSON BLVD SUITE 307
Fairfield, CA 94533

(707) 646-4669

✔ PECOS✔ Accepts Medicare6.5 mi

Kevin Miller, DPM

Podiatry

NPI 1982851549

2500 HILBORN RD
Fairfield, CA 94534

(707) 646-5599

✔ PECOS✔ Accepts Medicare7.7 mi

Jay Parkin, MD

Orthopedic Surgery

NPI 1780679340

2500 HILBORN RD
Fairfield, CA 94534

(707) 646-5599

✔ PECOS✔ Accepts Medicare7.7 mi

Melissa Loja, MD

Vascular Surgery

NPI 1578826749

1860 PENNSYLVANIA AVE STE 120
Fairfield, CA 94533

(707) 646-4400

✔ PECOS✔ Accepts Medicare8.4 mi

William Fulton, D.O.

General Surgery

NPI 1497831564

1860 PENNSYLVANIA AVE SUITE 300B
Fairfield, CA 94533

(707) 646-4180

✔ PECOS✔ Accepts Medicare8.4 mi

Majid Kianmajd, DO

General Surgery

NPI 1396008389

1860 PENNSYLVANIA AVE STE 200
Fairfield, CA 94533

(707) 646-4180

✔ PECOS✔ Accepts Medicare8.4 mi

Shanna Snow, D.O.

Obstetrics/Gynecology

NPI 1740483387

1860 PENNSYLVANIA AVE SUITE 300
Fairfield, CA 94533

(707) 646-4100

✔ PECOS✔ Accepts Medicare8.4 mi

Mounzer Alsamman, M.D.

Gastroenterology

NPI 1700822160

5140 BUSINESS CENTER DR SUTIE 180
Fairfield, CA 94534

(707) 646-3555

✔ PECOS✔ Accepts Medicare14 mi

Stella Huang, D.O.

Obstetrics/Gynecology

NPI 1760610273

100 HOSPITAL DR SUITE 200
Vallejo, CA 94589

(707) 427-4900

✔ PECOS✔ Accepts Medicare22 mi

Akbar Khan, D.O.

Physical Medicine and Rehabilitation

NPI 1528383833

3609 MISSION AVE STE D
Carmichael, CA 95608

(530) 650-8333

✔ PECOS✔ Accepts Medicare37 mi

Neil Pathare, M.D.

Sports Medicine

NPI 1659532893

450 SUTTER ST RM 400
San Francisco, CA 94108

(415) 900-3000

✔ PECOS✔ Accepts Medicare46 mi

Austin Vonasek, DPM

Podiatry

NPI 1144781113

611 E DOUGLAS RD STE 101
Mishawaka, IN 46545

(574) 335-6817

✔ PECOS✔ Accepts Medicare1,897 mi

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

Areas of Expertise CMS Part B claims 23

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

324 services323 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

285 services277 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

258 services256 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

191 services143 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

169 services67 patients

Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrography G0260

This procedure involves injecting medicine into the sacroiliac joint, located in the lower back. The aim is to reduce inflammation and pain. Anesthetic is used for immediate pain relief, while a steroid helps decrease inflammation over time. Arthrography, a type of imaging, may be used for precision.

151 services91 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

141 services92 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

88 services88 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

82 services82 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint 64635

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

57 services37 patients

Injection of substance into lower spine canal using imaging guidance 62323

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

55 services39 patients

Injection of upper or middle spine facet joint using imaging guidance, single level 64490

This procedure involves injecting medication into a joint in your upper or middle spine. It's performed under imaging guidance for precision. The aim is to reduce inflammation and pain. It's a single-level process, meaning one joint is treated at a time.

48 services24 patients

Incision of tendon covering of finger 26055

This procedure involves making a small cut into the protective sheath around a finger tendon. It's typically done to relieve pressure or inflammation, improve finger movement, or treat conditions like trigger finger. It's a safe, often outpatient procedure.

39 services21 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

38 services37 patients

Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist 36902

This procedure involves inserting a needle or tube into your hemodialysis circuit, a system that cleans your blood when your kidneys can't. A balloon is then used to widen a narrow section of this circuit. A radiologist reviews the procedure to ensure accuracy.

32 services24 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

30 services30 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

26 services18 patients

Release and/or relocation of hand nerve 64721

This procedure involves adjusting or moving a nerve in your hand to alleviate discomfort or improve function. The nerve may be compressed, causing pain or numbness. By releasing or relocating the nerve, these symptoms can be reduced, enhancing hand usage.

19 services18 patients

Injection of trigger points, 1-2 muscles 20552

Trigger point injection is a procedure used to treat painful areas of muscle that contain trigger points, or knots of muscle that form when muscles do not relax. 1-2 muscles are typically treated in one session. The procedure involves injecting medications into these points to alleviate pain.

17 services17 patients

Injection of substance into middle or upper spine canal using imaging guidance 62321

This procedure involves injecting a substance into your middle or upper spine canal. It's performed under imaging guidance to ensure accuracy. The substance can help diagnose or treat various conditions, providing relief from symptoms.

17 services15 patients

Destruction of upper or middle spinal facet joint nerves using imaging guidance, single facet joint 64633

This procedure involves the use of imaging technology to guide a needle to the nerves of a single facet joint in the upper or middle spine. The nerves are then treated to alleviate pain and improve mobility.

14 services13 patients

Injection beneath lining of large bowel using a flexible endoscope 45381

This procedure involves a flexible tube, called an endoscope, being inserted into the large bowel. A small needle is then passed through the tube to inject medication under the bowel lining. This is typically done to treat inflammation or bleeding.

13 services13 patients

Complex removal of cataract with insertion of prosthetic lens 66982

This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.

13 services13 patients

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 Northbay Physicians Surgery Center LLC's NPI number?

The NPI number for Northbay Physicians Surgery Center LLC is 1003015843. It was assigned to this organization in the NPPES registry on July 12, 2007. The provider is doing business as NorthBay Physicians Surgery Center, LLC and The Surgery Center.

Where is Northbay Physicians Surgery Center LLC located?

Northbay Physicians Surgery Center LLC is located at 1006 Nut Tree Road, Vacaville, CA 95687. The listed phone number is (707) 446-2800.

What is Northbay Physicians Surgery Center LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

Is Northbay Physicians Surgery Center LLC enrolled in Medicare?

Yes. Northbay Physicians Surgery Center LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Northbay Physicians Surgery Center LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 17 clinicians in 10 Medicare specialties reassign their Medicare billing to Northbay Physicians Surgery Center LLC. 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 Gastroenterology (4), General Surgery (2) and Obstetrics/Gynecology (2). Of these, 12 practice 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 Northbay Physicians Surgery Center LLC was last updated on May 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.