Cassandra Os, NP - Nurse Practitioner in West Springfield, MA

Cassandra Os, NP is a Nurse Practitioner based in West Springfield, Massachusetts. Cassandra Os is licensed to practice in Massachusetts (license number RN2309397) and her current practice location is 103 Myron St Ste A, West Springfield, Massachusetts. She can be reached at her office (for appointments etc.) via phone at (888) 964-6681.

NPI number for Cassandra Os is 1285258863 and her current mailing address is 100 Crossing Blvd Ste 300, Framingham, Massachusetts. She does not participate in medicare program and thus does not accept medicare assignments. Her NPI Number is 1285258863.

Contact Information

Cassandra Os, NP
103 Myron St Ste A,
West Springfield, MA 01089-1485
(888) 964-6681
(888) 662-0859

Map and Direction




Provider's Profile

Full NameCassandra Os
GenderFemale
SpecialityNurse Practitioner
Location103 Myron St Ste A, West Springfield, Massachusetts
Accepts Medicare AssignmentsDoes not participate in Medicare Program. She may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1285258863
  • Provider Enumeration Date: 05/30/2020
  • Last Update Date: 05/30/2020

Medical Identifiers

Medical identifiers for Cassandra Os such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285258863NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner RN2309397 (Massachusetts)Primary

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. Cassandra Os is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Cassandra Os, NP
100 Crossing Blvd Ste 300,
Framingham, MA 01702-5555

Ph: (617) 964-6681
Cassandra Os, NP
103 Myron St Ste A,
West Springfield, MA 01089-1485

Ph: (888) 964-6681

Reviews and Comments


Nurse Practitioner Nurses in West Springfield, MA

Ashley Bullen, CNP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 103 Myron St, Suite A, West Springfield, MA 01089
Phone: 413-592-1980    Fax: 413-439-0100
Heather Ashley Lomax, NP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 46 Daggett Dr, West Springfield, MA 01089
Phone: 413-794-9110    Fax: 413-794-1080
Ms. Jessica Marie Lafleche, NP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 46 Daggett Dr, West Springfield, MA 01089
Phone: 413-794-9110    Fax: 413-794-1080
Mary Louise Ritter, A.N.P.
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 46 Daggett Dr, Suite 3b, West Springfield, MA 01089
Phone: 413-747-4544    
Xialian Liu, RN/NP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 1132 Westfield St, West Springfield, MA 01089
Phone: 413-592-1980    Fax: 413-439-0096
Ms. Carol Ann Boyce,
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 103 Myron St, Suite A, West Springfield, MA 01089
Phone: 413-592-1980    Fax: 413-439-0100
Rhianna Lajoie, NP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 46 Daggett Drive, West Springfield, MA 01089
Phone: 413-794-9110    Fax: 413-794-1080

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.