Kay Thi Oo, MD - Medicare Hospitalist in Springfield, MA

Kay Thi Oo, MD is a medicare enrolled "Internal Medicine" physician in Springfield, Massachusetts. She graduated from medical school in 2012 and has 12 years of diverse experience with area of expertise as Hospitalist. 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) 794-6297.

Kay Thi Oo is licensed to practice in Massachusetts (license number 287430) 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 1184110538.

Contact Information

Kay Thi Oo, MD
759 Chestnut St,
Springfield, MA 01107-1619
(413) 794-6297
(413) 794-1767

Map and Direction




Physician's Profile

Full NameKay Thi Oo
GenderFemale
SpecialityHospitalist
Experience12 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:
  • Kay Thi Oo graduated from medical school in 2012
  NPI Data:
  • NPI Number: 1184110538
  • Provider Enumeration Date: 07/09/2018
  • Last Update Date: 08/13/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 0042564379
  • Enrollment ID: I20210720002064

Medical Identifiers

Medical identifiers for Kay Thi Oo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184110538NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 287430 (Massachusetts)Secondary
207R00000XInternal Medicine 287430 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Baystate Medical CenterSpringfield, 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. Kay Thi Oo 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

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. Kay Thi Oo 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
Kay Thi Oo, MD
280 Chestnut Street, 2nd Floor,
Springfield, MA 01199-1001

Ph: (413) 794-5700
Kay Thi Oo, MD
759 Chestnut St,
Springfield, MA 01107-1619

Ph: (413) 794-6297

Reviews and Comments


Internal Medicine Doctors in Springfield, MA

Grace Makari-judson, MD
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Phone: 413-794-9338    Fax: 413-794-9754
Peter Whittredge, M.D.
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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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Twara K Tarasaria, MD
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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.
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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
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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.
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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.