Charles Rosenbaum, MD - Medicare Internal Medicine in Marlborough, MA

Charles Rosenbaum, MD is a medicare enrolled "Internal Medicine - Medical Oncology" physician in Marlborough, Massachusetts. His current practice location is 65 Fremont St, Marlborough, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 481-4213.

Charles Rosenbaum is licensed to practice in Massachusetts (license number 36848) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1922049147.

Contact Information

Charles Rosenbaum, MD
65 Fremont St,
Marlborough, MA 01752-1271
(508) 481-4213
(508) 481-7841

Map and Direction




Physician's Profile

Full NameCharles Rosenbaum
GenderMale
SpecialityInternal Medicine - Medical Oncology
Location65 Fremont St, Marlborough, Massachusetts
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1922049147
  • Provider Enumeration Date: 06/09/2006
  • Last Update Date: 07/09/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 3577503457
  • Enrollment ID: I20050510000829

Medical Identifiers

Medical identifiers for Charles Rosenbaum such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922049147NPI-NPPES
2074303MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RX0202XInternal Medicine - Medical Oncology 36848 (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. Charles Rosenbaum allows following entities to bill medicare on his behalf.
Entity NameCharter Health Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750824124
PECOS PAC ID: 1153604079
Enrollment ID: O20170220000311

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. Charles Rosenbaum 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
Charles Rosenbaum, MD
65 Fremont St,
Marlborough, MA 01752-1271

Ph: (508) 481-4213
Charles Rosenbaum, MD
65 Fremont St,
Marlborough, MA 01752-1271

Ph: (508) 481-4213

Reviews and Comments


Internal Medicine Doctors in Marlborough, MA

Dr. Usha Bandari, MD
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Phone: 508-229-2227    Fax: 508-485-5298
Kathleen Eva White, D.O.
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Practice Location: 340 Maple St, Suite 203, Marlborough, MA 01752
Phone: 508-485-7779    Fax: 508-485-7769
Lalita A Matta, M.D.
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Practice Location: 65 Fremont St, Marlborough, MA 01752
Phone: 508-303-8553    
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Medicare: Accepting Medicare Assignments
Practice Location: 157 Union St, Marlborough, MA 01752
Phone: 508-486-6700    Fax: 508-229-1227
Oluwaseun Adaramola,
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Practice Location: 157 Union St, Marlborough, MA 01752
Phone: 508-486-5678    Fax: 508-486-5677
Vinay Kumar, MD
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Practice Location: 126 Union Street, Marlborough, MA 01752
Phone: 508-460-3872    Fax: 508-836-9518
Dr. Humaira A Mahmud, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 640 Bolton Street, Kidney & Hypertension Clinic Inc., Marlborough, MA 01752
Phone: 508-281-5953    Fax: 508-229-2343

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.