Granite State Gastrointestinal Consultants Pllc - Medicare Primary Care in Londonderry, NH

Granite State Gastrointestinal Consultants Pllc is a medicare enrolled primary clinic (Internal Medicine - Gastroenterology) in Londonderry, New Hampshire. The current practice location for Granite State Gastrointestinal Consultants Pllc is 50 Michels Way, Londonderry, New Hampshire. For appointments, you can reach them via phone at (603) 432-8802. The mailing address for Granite State Gastrointestinal Consultants Pllc is 50 Michels Way, Londonderry, New Hampshire and phone number is (603) 432-8802.

Granite State Gastrointestinal Consultants Pllc is licensed to practice in * (Not Available) (license number ). The clinic also participates in the medicare program and its NPI number is 1942214457. This medical practice accepts medicare insurance (which means this clinic accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance). However, please confirm if they accept your insurance at (603) 432-8802.

Contact Information

Granite State Gastrointestinal Consultants Pllc
50 Michels Way
Londonderry
NH 03053
(603) 432-8802
(603) 437-0118

Map and Direction


Primary Care Clinic Profile

Full NameGranite State Gastrointestinal Consultants Pllc
SpecialityInternal Medicine
Location50 Michels Way, Londonderry, New Hampshire
Authorized Official Name and PositionKnut Roalsvig (PHYSICIAN PRESIDENT)
Authorized Official Contact6034328802
Accepts Medicare InsuranceYes. This clinic participates in medicare program and accept medicare insurance.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Granite State Gastrointestinal Consultants Pllc
50 Michels Way
Londonderry
NH 03053

Ph: (603) 432-8802
Granite State Gastrointestinal Consultants Pllc
50 Michels Way
Londonderry
NH 03053

Ph: (603) 432-8802

NPI Details:

NPI Number1942214457
Provider Enumeration Date07/28/2006
Last Update Date02/20/2023

Medicare PECOS Information:

Medicare PECOS PAC ID8022093962
Medicare Enrollment IDO20060925000181

Medical Identifiers

Medical identifiers for Granite State Gastrointestinal Consultants Pllc such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942214457NPI-NPPES
30002464MedicaidNH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology (* (Not Available))Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Granite State Gastrointestinal Consultants Pllc acts as a billing entity for following providers:
Provider NameKnut J Roalsvig
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1154381614
PECOS PAC ID: 2567447410
Enrollment ID: I20050729000412
Provider NameEmilianos N Karagiannis
Provider TypePractitioner - Internal Medicine
Provider IdentifiersNPI Number: 1689657363
PECOS PAC ID: 1850302423
Enrollment ID: I20060510000359
Provider NameChristopher N Dainiak
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1710942354
PECOS PAC ID: 2961392428
Enrollment ID: I20060727000276
Provider NameSteven D Taylor
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1134106990
PECOS PAC ID: 5890692339
Enrollment ID: I20090209000161
Provider NameAnnette Tobar
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1326206772
PECOS PAC ID: 7113051772
Enrollment ID: I20140730001124
Provider NameAllison Anastasoff
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1326491325
PECOS PAC ID: 6305124140
Enrollment ID: I20161028000750
Provider NameLeon P Mclean
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1457495806
PECOS PAC ID: 1951598481
Enrollment ID: I20161212002066
Provider NameBeena Rajagopal
Provider TypePractitioner - Nurse Practitioner
Provider IdentifiersNPI Number: 1700335791
PECOS PAC ID: 5092096487
Enrollment ID: I20161222001152
Provider NameBethany Reutemann
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1285070136
PECOS PAC ID: 8820398555
Enrollment ID: I20201019002258
Provider NameSteven Tsistrakis
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1992168389
PECOS PAC ID: 4284970567
Enrollment ID: I20220801000191
Provider NameDeepshikha Nag Chowdhury
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1255643078
PECOS PAC ID: 7911299185
Enrollment ID: I20230310001693
Provider NameLaura Horton
Provider TypePractitioner - Gastroenterology
Provider IdentifiersNPI Number: 1609225242
PECOS PAC ID: 1759675499
Enrollment ID: I20230921001593

Reviews and Comments


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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.