Ms Diane Grassi, NP - Medicare Nurse Practitioner in Smithtown, NY

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Ms Diane Grassi, NP is a medicare enrolled "Nurse Practitioner - Adult Health" in Smithtown, New York. Her current practice location is 285 E Main St, Smithtown, New York. You can reach out to her office (for appointments etc.) via phone at (631) 656-0874.

Ms Diane Grassi is licensed to practice in New York (license number F308295-1) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1063917136.

Contact Information

Ms Diane Grassi, NP
285 E Main St,
Smithtown, NY 11787-2978
(631) 656-0874
Not Available

Map and Direction




Provider's Profile

Full NameMs Diane Grassi
GenderFemale
SpecialityNurse Practitioner - Adult Health
Location285 E Main St, Smithtown, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1063917136
  • Provider Enumeration Date: 03/29/2018
  • Last Update Date: 01/07/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 7416203385
  • Enrollment ID: I20180706001592

Medical Identifiers

Medical identifiers for Ms Diane Grassi such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1063917136NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LG0600XNurse Practitioner - Gerontology F308295-1 (New York)Secondary
363LA2200XNurse Practitioner - Adult Health F308295-1 (New York)Primary

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. Ms Diane Grassi allows following entities to bill medicare on her behalf.
Entity NameProhealth Care Associates Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275596280
PECOS PAC ID: 4486544186
Enrollment ID: O20040317000468
Entity NameMiddle Country Endocrinology, Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295068930
PECOS PAC ID: 9032256169
Enrollment ID: O20091022000358
Entity NameNorth Shore-lij Medical Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053688572
PECOS PAC ID: 3375701568
Enrollment ID: O20120220000262

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. Ms Diane Grassi 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
Ms Diane Grassi, NP
7 Wendy Ln,
Massapequa Park, NY 11762-3733

Ph: (516) 797-6670		Ms Diane Grassi, NP
285 E Main St,
Smithtown, NY 11787-2978

Ph: (631) 656-0874

Reviews and Comments


Nurse Practitioner Nurses in Smithtown, NY

Mrs. Anne Marie Mcgrath, ANP
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Practice Location: 290 E Main St Ste 700, Smithtown, NY 11787
Phone: 631-361-4802    Fax: 631-361-5376
Mrs. Rachel Anne Demaio, FNP
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Practice Location: 994 W Jericho Tpke, Smithtown, NY 11787
Phone: 631-265-4200    
Mrs. Melissa Reilly, FNP
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Phone: 631-366-2333    
Mr. Donald Peter Johnson,
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Practice Location: 50 New York Ave # 25a, Smithtown, NY 11787
Phone: 631-862-3000    
Christina Decosta, NP
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Practice Location: 994 W Jericho Tpke Ste 104, Smithtown, NY 11787
Phone: 631-543-1440    
Ms. Ellen Marie Mccarty-santoro, N.P.
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Medicare: Medicare Enrolled
Practice Location: 496 Smithtown Byp, Smithtown, NY 11787
Phone: 631-979-8880    Fax: 631-979-8091
Mrs. Jennifer Cassidy, FNP
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Medicare: Medicare Enrolled
Practice Location: 260 Middle Country Rd, Suite 214, Smithtown, NY 11787
Phone: 631-265-5050    Fax: 631-265-3304

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.