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DR. WILLIAM JAMES FERGES M.D.
NPI 1982909040
Internal Medicine - Gastroenterology in Somerset, NJ

Active since January 21, 2011PECOS EnrolledAccepts Medicare Assignment
97.45/100
CMS Quality Rating
33 CLYDE RD, SUITE 102, SOMERSET, NJ 08873(732) 873-9200(732) 873-1699 Get Directions Write a Review

NPPES record last updated: March 31, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. William James Ferges M.d. NPPES

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

DR. WILLIAM JAMES FERGES M.D. (NPI 1982909040) is an individual gastroenterology provider in Somerset, New Jersey, licensed in New Jersey (25MA08991500) and active in the NPI registry since January 2011. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and is a graduate of Georgetown University School Of Medicine (2008).

NPPES Registry Identity

NPI1982909040
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. WILLIAM JAMES FERGESCredential: M.D.
Location Address33 CLYDE RD, SUITE 102Somerset, NJ 08873-5032
Mailing Address33 Clyde Rd, Suite 102Somerset, NJ 08873-5032 · (732) 873-9200 · Fax (732) 873-1699
Phone(732) 873-9200
Fax(732) 873-1699
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 2008
Enumeration DateJanuary 21, 2011
Last NPPES UpdateMarch 31, 2015
✔ NPI 1982909040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NJ · 25MA08991500
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
33 CLYDE RD, Somerset, NJ 08873
Open in Google Maps ↗

Other Identifiers 1

Medicare PIN357593M9VNJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William James Ferges M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446477517
PECOS Enrollment IDI20140813001737
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Ferges reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Allied Digestive Health, LLC
29 mi
Gastroenterology
187 ROUTE 36, MONMOUTH CORPORATE PARK CENTER I;BUILDING A, SUITE 230
West Long Beach, NJ 07764
  • Reassigned Medicare billing, New Jersey enrollment
  • 406 clinicians in this Medicare group
NPI 1265831259 (732) 222-3805

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 9

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
443 services332 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.
158 services157 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
121 services121 patients
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.
109 services108 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.
96 services94 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
60 services60 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Robert Wood Johnson University Hospital

Acute Care Hospitals · New Brunswick, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310038
LocationOne Robert Wood Johnson PlaceNew Brunswick, NJ 08901 · Middlesex County
Emergency services Birthing friendly

Saint Peter's University Hospital

Acute Care Hospitals · New Brunswick, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310070
Location254 Easton AveNew Brunswick, NJ 08901 · Middlesex County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 08873 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.45/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability97
Improvement Activities40

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DIGESTIVE DISEASE CENTER OF NJ LLC
Internal Medicine (Gastroenterology)
33 CLYDE RD, SUITE 102
SOMERSET, NJ 08873
Somerset County (732) 873-9200
SCOTT L ARONSON MD
Internal Medicine (Gastroenterology)
33 CLYDE RD, STE 102
SOMERSET, NJ 08873
Somerset County (732) 873-9200
DR. IRA MERKEL
Internal Medicine (Gastroenterology)
33 CLYDE RD, SUITE 102
SOMERSET, NJ 08873
Somerset County (732) 873-9200
DR. MITCHELL FERGES
Specialist
33 CLYDE RD, SUITE 102
SOMERSET, NJ 08873
Somerset County (732) 873-9200
TRISTATE PAIN CONSULTANTS, PC
Pain Medicine (Interventional Pain Medicine)
33 CLYDE RD, 105
SOMERSET, NJ 08873
Somerset County (917) 749-5701
DR. CATVAN LE M.D.
Pain Medicine (Interventional Pain Medicine)
33 CLYDE RD, SUITES 105-106
SOMERSET, NJ 08873
Somerset County (732) 873-6868
DR. NOEL ILOGU MD
Internal Medicine
33 CLYDE RD, STE 105
SOMERSET, NJ 08873
Somerset County (732) 247-9001
SEJAL N. PATEL PA-C
Physician Assistant
33 CLYDE RD, SUITES 105-106
SOMERSET, NJ 08873
Somerset County (732) 873-6868

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 William Ferges's NPI number?

The NPI number for William Ferges is 1982909040. It was assigned to this individual provider in the NPPES registry on January 21, 2011.

Where is William Ferges located?

William Ferges practices at 33 Clyde Rd Suite 102, Somerset, NJ 08873. The listed phone number is (732) 873-9200.

What is William Ferges's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is William Ferges enrolled in Medicare?

Yes. William Ferges is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for William Ferges's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Ferges reassigns Medicare benefits to Allied Digestive Health, LLC (West Long Beach, NJ). The 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 William Ferges's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Ferges accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list William Ferges as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Ferges affiliated with any hospitals?

According to CMS data, William Ferges is affiliated with Robert Wood Johnson University Hospital and Saint Peter's University Hospital.

When was this NPI record last updated?

The NPPES record for William Ferges was last updated on March 31, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.