Dr Stephen Willis, MD - Medicare Gastroenterology in Flemington, NJ

Dr Stephen Willis, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Flemington, New Jersey. He went to Rutgers R W Johnson Medical School (cam/new Bruns/pisc) and graduated in 1998 and has 26 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice St Lukes Warren Physician Group Pc, St Luke's Physician Group Inc and his current practice location is 1100 Wescott Dr, Suite 201, Flemington, New Jersey. You can reach out to his office (for appointments etc.) via phone at (908) 788-4022.

Dr Stephen Willis is licensed to practice in New Jersey (license number 25MA08845200) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1629139076.

Contact Information

Dr Stephen Willis, MD
1100 Wescott Dr, Suite 201,
Flemington, NJ 08822-4673
(908) 788-4022
(908) 788-4066

Map and Direction




Physician's Profile

Full NameDr Stephen Willis
GenderMale
SpecialityGastroenterology
Experience26 Years
Location1100 Wescott Dr, Flemington, New Jersey
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Stephen Willis attended and graduated from Rutgers R W Johnson Medical School (cam/new Bruns/pisc) in 1998
  NPI Data:
  • NPI Number: 1629139076
  • Provider Enumeration Date: 12/12/2006
  • Last Update Date: 06/18/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 2062491038
  • Enrollment ID: I20110201000091

Medical Identifiers

Medical identifiers for Dr Stephen Willis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629139076NPI-NPPES
0247138MedicaidNJ

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 25MA08845200 (New Jersey)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St Luke's Warren HospitalPhillipsburg, NJHospital
St Luke's Hospital - Easton CampusEaston, PAHospital
St Luke's Hospital - Anderson CampusEaston, PAHospital
St Luke's Hospital BethlehemBethlehem, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Lukes Warren Physician Group Pc9739093675324
St Luke's Physician Group Inc67097983331727

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Stephen Willis allows following entities to bill medicare on his behalf.
Entity NameSt Lukes Warren Physician Group Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467725184
PECOS PAC ID: 9739093675
Enrollment ID: O20031117000020
Entity NameTwin Rivers Gastroenterology Center, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851343784
PECOS PAC ID: 4880589100
Enrollment ID: O20040331000326

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Stephen Willis is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Stephen Willis, MD
1100 Wescott Dr, Suite 201,
Flemington, NJ 08822-4673

Ph: (908) 788-4022
Dr Stephen Willis, MD
1100 Wescott Dr, Suite 201,
Flemington, NJ 08822-4673

Ph: (908) 788-4022

Reviews and Comments


Internal Medicine Doctors in Flemington, NJ

Dr. Jeffrey D Hartford, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1100 Wescott Dr, Suite 201, Flemington, NJ 08822
Phone: 908-788-6504    Fax: 908-788-6458
Devi Patel, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1100 Wescott Dr Ste 206, Flemington, NJ 08822
Phone: 908-788-6448    Fax: 908-483-4004
Daniel Kobe,
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 1100 Wescott Dr Ste G3, Flemington, NJ 08822
Phone: 908-788-1710    
Kiera Farry, D.O.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1100 Wescott Dr Ste G3, Flemington, NJ 08822
Phone: 908-788-1710    
Dr. Mary Jean Fusco, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 4 Ups N Downs Ct, Flemington, NJ 08822
Phone: 908-782-0493    
Donald Stuart Novy, M.D.
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 6 Sand Hill Rd Ste 201, Flemington, NJ 08822
Phone: 908-237-4072    Fax: 908-782-7195
Glen Erik Tonnessen, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1100 Wescott Drive, Suite G 3, Flemington, NJ 08822
Phone: 908-788-1710    Fax: 908-788-1716

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.