Dr Ann Butler Zimrin, MD - Medicare Hematology/oncology in Baltimore, MD

Dr Ann Butler Zimrin, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Baltimore, Maryland. She graduated from medical school in 1984 and has 40 years of diverse experience with area of expertise as Hematology/oncology. She is a member of the group practice University Of Maryland Oncology Associates Pa and her current practice location is 22 S Greene St, Baltimore, Maryland. You can reach out to her office (for appointments etc.) via phone at (419) 328-2594.

Dr Ann Butler Zimrin is licensed to practice in Maryland (license number D39639) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1215991179.

Contact Information

Dr Ann Butler Zimrin, MD
22 S Greene St,
Baltimore, MD 21201-1544
(419) 328-2594
(410) 328-6896

Map and Direction




Physician's Profile

Full NameDr Ann Butler Zimrin
GenderFemale
SpecialityHematology/oncology
Experience40 Years
Location22 S Greene St, Baltimore, Maryland
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Ann Butler Zimrin graduated from medical school in 1984
  NPI Data:
  • NPI Number: 1215991179
  • Provider Enumeration Date: 04/16/2006
  • Last Update Date: 03/08/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 5092909283
  • Enrollment ID: I20101102000156

Medical Identifiers

Medical identifiers for Dr Ann Butler Zimrin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215991179NPI-NPPES
S053-0042OtherMDBLUE CHOICE-REGIONAL
442100100MedicaidMD
604401-02 & 03OtherMDBC/BS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology D39639 (Maryland)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of Maryland Medical CenterBaltimore, MDHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Maryland Oncology Associates Pa044615648354

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 Ann Butler Zimrin allows following entities to bill medicare on her behalf.
Entity NameUniversity Of Maryland Oncology Associates Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679523575
PECOS PAC ID: 0446156483
Enrollment ID: O20031210000323

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 Ann Butler Zimrin 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 Ann Butler Zimrin, MD
Po Box 62602,
Baltimore, MD 21264-2602

Ph: (419) 328-2594
Dr Ann Butler Zimrin, MD
22 S Greene St,
Baltimore, MD 21201-1544

Ph: (419) 328-2594

Reviews and Comments


Internal Medicine Doctors in Baltimore, MD

Dr. Leonard Anang Sowah, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 22 S Greene St, Baltimore, MD 21201
Phone: 410-706-4619    Fax: 410-706-2062
Dr. Bhavandeep Singh Bajaj, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3345 Wilkens Avenue, Suite L10, Baltimore, MD 21229
Phone: 410-644-4444    Fax: 410-644-4484
Dr. Yonas Sisay, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 822 Guilford Ave, #100, Baltimore, MD 21202
Phone: 410-385-9672    
Dr. Stephen John Witanowski, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 2700 Quarry Lake Dr, Suite 280, Baltimore, MD 21209
Phone: 410-469-5544    Fax: 410-585-2867
Dr. Susrutha Kotwal, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4940 Eastern Ave, Mfl Bldg, West Tower, 6th Floor, Baltimore, MD 21224
Phone: 410-550-5018    
Dr. Mitesh G Trambadia, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 6701 N Charles St Ste 5218, Baltimore, MD 21204
Phone: 443-849-3786    
Ronak K Patel, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 201 E University Pkwy, Baltimore, MD 21218
Phone: 410-554-2000    

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.