Alwin Sebastian, MD - Medicare Family Practice in Portsmouth, NH

Alwin Sebastian, MD is a medicare enrolled "Family Medicine" physician in Portsmouth, New Hampshire. He graduated from medical school in 2021 and has 5 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Hni Medical Services and his current practice location is 333 Borthwick Avenue, Portsmouth, New Hampshire. You can reach out to his office (for appointments etc.) via phone at (303) 563-9790.

Alwin Sebastian is licensed to practice in Texas (license number W1223) 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 1740928514.

Contact Information

Alwin Sebastian, MD
333 Borthwick Avenue,
Portsmouth, NH 03801
(303) 563-9790
Not Available

Map and Direction




Physician's Profile

Full NameAlwin Sebastian
GenderMale
SpecialityFamily Practice
Experience5 Years
Location333 Borthwick Avenue, Portsmouth, New Hampshire
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:
  • Alwin Sebastian graduated from medical school in 2021
  NPI Data:
  • NPI Number: 1740928514
  • Provider Enumeration Date: 05/23/2022
  • Last Update Date: 09/23/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7113424896
  • Enrollment ID: I20251008002447

Medical Identifiers

Medical identifiers for Alwin Sebastian such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740928514NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist W1223 (Texas)Secondary
207Q00000XFamily Medicine W1223 (Texas)Primary
390200000XStudent In An Organized Health Care Education/training Program R4045 (New Hampshire)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Valley Regional Medical CenterBrownsville, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hni Medical Services640602881034

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. Alwin Sebastian 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
Alwin Sebastian, MD
333 Borthwick Avenue,
Portsmouth, NH 03801

Ph: () -
Alwin Sebastian, MD
333 Borthwick Avenue,
Portsmouth, NH 03801

Ph: (303) 563-9790

Reviews and Comments


Family Medicine Doctors in Portsmouth, NH

Dr. Eric J Schneider, MD
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Phone: 603-602-9070    Fax: 603-810-6881
Jennifer Lynn Hopp, MD
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Practice Location: 67 Corporate Dr Fl 2, Portsmouth, NH 03801
Phone: 603-610-8078    Fax: 603-868-8373
Evelyn A Graff, NP
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Practice Location: 875 Greenland Rd Unit C3, Portsmouth, NH 03801
Phone: 603-836-9869    
Michelle Bolduc, FNP
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Medicare: Not Enrolled in Medicare
Practice Location: 278 Lafayette Rd Ste E5, Portsmouth, NH 03801
Phone: 603-433-8488    Fax: 603-373-6009
Jennifer Katsu Stebbing, DO
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Practice Location: 1 Greenleaf Woods Dr Unit 102, Portsmouth, NH 03801
Phone: 603-436-0220    
Jenne R Wax, MD
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Practice Location: 1600 Woodbury Ave, Portsmouth, NH 03801
Phone: 603-602-9070    
Karen L Palmer, DO
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Medicare: Accepting Medicare Assignments
Practice Location: 25 New Hampshire Ave, Suite 100, Portsmouth, NH 03801
Phone: 603-431-2516    Fax: 603-431-9945

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.