John Marshall King, MD - Medicare in Haverhill, MA

John Marshall King, MD is a medicare enrolled "Family Medicine" physician in Haverhill, Massachusetts. His current practice location is 1 Park Way, Haverhill, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (978) 521-3200.

John Marshall King is licensed to practice in Massachusetts (license number 215349) 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 1790771269.

Contact Information

John Marshall King, MD
1 Park Way,
Haverhill, MA 01830-6278
(978) 521-3200
(978) 557-8798

Map and Direction




Physician's Profile

Full NameJohn Marshall King
GenderMale
Speciality
Experience Years
Location1 Park Way, Haverhill, 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:
  • John Marshall King attended and graduated from in
  NPI Data:
  • NPI Number: 1790771269
  • Provider Enumeration Date: 09/21/2005
  • Last Update Date: 04/24/2020
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for John Marshall King such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1790771269NPI-NPPES
0177415MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 215349 (Massachusetts)Primary

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. John Marshall King 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
John Marshall King, MD
1 Park Way,
Haverhill, MA 01830-6278

Ph: (978) 521-3200
John Marshall King, MD
1 Park Way,
Haverhill, MA 01830-6278

Ph: (978) 521-3200

Reviews and Comments


Family Medicine Doctors in Haverhill, MA

Dr. Peter L Rees, M.D
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 62 Brown Street, Suite 200, Haverhill, MA 01830
Phone: 978-521-8377    Fax: 978-521-3689
Dr. George A Lussier, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1 Merrimack St, Haverhill, MA 01860
Phone: 978-521-6555    
Renae Rochelle Mitchell, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 62 Brown St. Suite 405, Haverhill, MA 01830
Phone: 978-521-8377    Fax: 978-521-3689

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.