Timothy A Johnson, MD - Medicare Hematology/oncology in Springfield, MA

Timothy A Johnson, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Springfield, Massachusetts. He went to University Of Connecticut School Of Medicine and graduated in 1992 and has 32 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Mercy Medical Group Inc and his current practice location is 271 Carew Street, Springfield, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (413) 748-7370.

Timothy A Johnson is licensed to practice in Massachusetts (license number 220236) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1801879762.

Contact Information

Timothy A Johnson, MD
271 Carew Street,
Springfield, MA 01104
(413) 748-7370
(413) 748-7221

Map and Direction




Physician's Profile

Full NameTimothy A Johnson
GenderMale
SpecialityHematology/oncology
Experience32 Years
Location271 Carew Street, Springfield, Massachusetts
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Timothy A Johnson attended and graduated from University Of Connecticut School Of Medicine in 1992
  NPI Data:
  • NPI Number: 1801879762
  • Provider Enumeration Date: 11/23/2005
  • Last Update Date: 04/10/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 2264418797
  • Enrollment ID: I20040629001174

Medical Identifiers

Medical identifiers for Timothy A Johnson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801879762NPI-NPPES
2062330MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 220236 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Beacon Hospice, An Amyedisys CompanySpringfield, MAHospice
Mercy Medical CtrSpringfield, MAHospital
Baystate Medical CenterSpringfield, MAHospital
Holyoke Medical CenterHolyoke, MAHospital
Cooley Dickinson Hospital Inc,theNorthampton, MAHospital
Baystate Noble HospitalWestfield, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Medical Group Inc236569802413

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. Timothy A Johnson allows following entities to bill medicare on his 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 NameMercy Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316213143
PECOS PAC ID: 2365698024
Enrollment ID: O20120813000018

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. Timothy A Johnson 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
Timothy A Johnson, MD
271 Carew Street,
Springfield, MA 01104

Ph: (413) 748-7370
Timothy A Johnson, MD
271 Carew Street,
Springfield, MA 01104

Ph: (413) 748-7370

Reviews and Comments


Internal Medicine Doctors in Springfield, MA

Grace Makari-judson, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3350 Main Street, Springfield, MA 01107
Phone: 413-794-9338    Fax: 413-794-9754
Peter Whittredge, M.D.
Hematology & Oncology
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
Hematology & Oncology
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
Hematology & Oncology
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.
Hematology & Oncology
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
Hematology & Oncology
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.
Hematology & Oncology
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.