Mark C Nitzberg, MD - Medicare Gastroenterology in Methuen, MA

Mark C Nitzberg, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Methuen, Massachusetts. He went to University Of Massachusetts Medical School and graduated in 1989 and has 35 years of diverse experience with area of expertise as Gastroenterology. His current practice location is 38r Merrimack St., Suite 2c, Methuen, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (978) 681-1977.

Mark C Nitzberg is licensed to practice in Massachusetts (license number 74584) 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 1881652758.

Contact Information

Mark C Nitzberg, MD
38r Merrimack St., Suite 2c,
Methuen, MA 01844
(978) 681-1977
(978) 686-8918

Map and Direction




Physician's Profile

Full NameMark C Nitzberg
GenderMale
SpecialityGastroenterology
Experience35 Years
Location38r Merrimack St., Methuen, Massachusetts
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:
  • Mark C Nitzberg attended and graduated from University Of Massachusetts Medical School in 1989
  NPI Data:
  • NPI Number: 1881652758
  • Provider Enumeration Date: 05/02/2006
  • Last Update Date: 11/16/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 3870520588
  • Enrollment ID: I20050725000909

Medical Identifiers

Medical identifiers for Mark C Nitzberg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881652758NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 74584 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Holy Family HospitalMethuen, MAHospital
Lawrence General HospitalLawrence, MAHospital

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. Mark C Nitzberg allows following entities to bill medicare on his behalf.
Entity NameMark C. Nitzberg, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992900013
PECOS PAC ID: 9739119017
Enrollment ID: O20050816000985

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. Mark C Nitzberg 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
Mark C Nitzberg, MD
380r Merrimack St., Suite 2c,
Methuen, MA 01844

Ph: (978) 681-1977
Mark C Nitzberg, MD
38r Merrimack St., Suite 2c,
Methuen, MA 01844

Ph: (978) 681-1977

Reviews and Comments


Internal Medicine Doctors in Methuen, MA

Evan Frank Marino, D.O.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 99 Jackson St, Methuen, MA 01844
Phone: 978-689-2540    Fax: 978-689-2540
Anish Geevarghese, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 70 East St, Methuen, MA 01844
Phone: 978-687-0151    
Richard Frederick Sawyer Jr., MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 411 Merrimack St, Ste 201, Methuen, MA 01844
Phone: 978-691-5160    Fax: 978-691-5163
Brinda Rengaraju, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 70 East St., Methuen, MA 01844
Phone: 978-687-0156    Fax: 978-681-7573
Vartan Yeghiazarians, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 411 Merrimack St, Methuen, MA 01844
Phone: 978-685-5627    Fax: 978-688-3987
Darma Marcelin,
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 70 East St, Methuen, MA 01844
Phone: 978-687-0151    
Venugopal R Saddi, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 411 Merrimack St, Suite 201, Methuen, MA 01844
Phone: 978-689-2510    Fax: 978-689-3510

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.