Dr Abigail Orenstein, MD - Medicare Critical Care (intensivists) in Springfield, MA

Dr Abigail Orenstein, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Springfield, Massachusetts. She went to George Washington University School Of Medicine and graduated in 1998 and has 26 years of diverse experience with area of expertise as Critical Care (intensivists). She is a member of the group practice Baystate Medical Practices Inc and her current practice location is 759 Chestnut St, Springfield, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (413) 794-5439.

Dr Abigail Orenstein is licensed to practice in Massachusetts (license number 253080) 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 1700834751.

Contact Information

Dr Abigail Orenstein, MD
759 Chestnut St,
Springfield, MA 01199-1619
(413) 794-5439
(413) 794-5389

Map and Direction




Physician's Profile

Full NameDr Abigail Orenstein
GenderFemale
SpecialityCritical Care (intensivists)
Experience26 Years
Location759 Chestnut St, Springfield, Massachusetts
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 Abigail Orenstein attended and graduated from George Washington University School Of Medicine in 1998
  NPI Data:
  • NPI Number: 1700834751
  • Provider Enumeration Date: 05/04/2006
  • Last Update Date: 07/21/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 7911949987
  • Enrollment ID: I20121020000009

Medical Identifiers

Medical identifiers for Dr Abigail Orenstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1700834751NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine 253080 (Massachusetts)Primary
207RI0200XInternal Medicine - Infectious Disease 253080 (Massachusetts)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Baystate Medical CenterSpringfield, MAHospital
Baystate Noble HospitalWestfield, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Baystate Medical Practices Inc59916029711015

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 Abigail Orenstein allows following entities to bill medicare on her behalf.
Entity NameBaystate Medical Practices Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548205909
PECOS PAC ID: 5991602971
Enrollment ID: O20040225000080
Entity NameAdfinitas Health At The Mercy Hospital Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669036737
PECOS PAC ID: 9032442298
Enrollment ID: O20190604000980

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 Abigail Orenstein 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 Abigail Orenstein, MD
280 Chestnut St, 2nd Fl,
Springfield, MA 01199-1619

Ph: (413) 794-5700
Dr Abigail Orenstein, MD
759 Chestnut St,
Springfield, MA 01199-1619

Ph: (413) 794-5439

Reviews and Comments


Internal Medicine Doctors in Springfield, MA

Grace Makari-judson, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 3350 Main Street, Springfield, MA 01107
Phone: 413-794-9338    Fax: 413-794-9754
Peter Whittredge, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 2 Medical Center Dr, Suite 410, Springfield, MA 01107
Phone: 413-781-5735    Fax: 413-732-0225
Dr. Marc A Goldman, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 175 Carew St Ste 200, Springfield, MA 01104
Phone: 413-732-4269    Fax: 413-785-4619
Twara K Tarasaria, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 759 Chestnut St, Springfield, MA 01107
Phone: 413-794-6297    Fax: 413-794-1767
Dr. Joan Wanda Lisak, M.D.
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 780 Chestnut St, Suite 20, Springfield, MA 01107
Phone: 413-781-2200    Fax: 413-781-2202
Dr. Eva Karacsonyi, MD
Critical Care Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2150 Main Street, Springfield, MA 01104
Phone: 413-739-5676    Fax: 413-739-2278
Dr. Sun Tien Lin, M.D.
Critical Care Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 125 Liberty St, Suite 204, Springfield, MA 01103
Phone: 413-788-4321    Fax: 413-788-8877

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.