Dr Kathryn E Himmelstein, MD - Medicare Internal Medicine in Boston, MA

Dr Kathryn E Himmelstein, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Boston, Massachusetts. Her current practice location is 801 Massachusetts Ave, # 2, Boston, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (617) 414-7019.

Dr Kathryn E Himmelstein is licensed to practice in Massachusetts (license number 1013330) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1548752140.

Contact Information

Dr Kathryn E Himmelstein, MD
801 Massachusetts Ave, # 2,
Boston, MA 02118
(617) 414-7019
(617) 414-2875

Map and Direction




Physician's Profile

Full NameDr Kathryn E Himmelstein
GenderFemale
SpecialityInternal Medicine - Infectious Disease
Location801 Massachusetts Ave, # 2, Boston, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1548752140
  • Provider Enumeration Date: 05/31/2018
  • Last Update Date: 07/11/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 1557612397
  • Enrollment ID: I20230608003387

Medical Identifiers

Medical identifiers for Dr Kathryn E Himmelstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1548752140NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 276589 (Massachusetts)Secondary
207R00000XInternal Medicine 1013330 (Massachusetts)Secondary
207RI0200XInternal Medicine - Infectious Disease 1013330 (Massachusetts)Primary

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 Kathryn E Himmelstein allows following entities to bill medicare on her behalf.
Entity NameMassachusetts General Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801874573
PECOS PAC ID: 2466365820
Enrollment ID: O20031111000434
Entity NameThe General Hospital Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023049236
PECOS PAC ID: 6507803806
Enrollment ID: O20080313000351

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 Kathryn E Himmelstein 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 Kathryn E Himmelstein, MD
960 Massachusetts Ave, Fl 2,
Boston, MA 02118-2690

Ph: (617) 414-5405
Dr Kathryn E Himmelstein, MD
801 Massachusetts Ave, # 2,
Boston, MA 02118

Ph: (617) 414-7019

Reviews and Comments


Internal Medicine Doctors in Boston, MA

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Dr. Felicia Elizabeth Patch, MD
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Phone: 617-414-4376    Fax: 617-414-4676

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.