Stephen Grayson, MD - Medicare Emergency Medicine in Mount Kisco, NY

Stephen Grayson, MD is a medicare enrolled "Emergency Medicine" physician in Mount Kisco, New York. His current practice location is 400 E Main St, Northern Westchester Hospital Emergency Dept, Mount Kisco, New York. You can reach out to his office (for appointments etc.) via phone at (914) 666-1254.

Stephen Grayson is licensed to practice in New York (license number 133867) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1063405496.

Contact Information

Stephen Grayson, MD
400 E Main St, Northern Westchester Hospital Emergency Dept,
Mount Kisco, NY 10549-3417
(914) 666-1254
(914) 666-1268

Map and Direction




Physician's Profile

Full NameStephen Grayson
GenderMale
SpecialityEmergency Medicine
Location400 E Main St, Mount Kisco, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1063405496
  • Provider Enumeration Date: 08/31/2005
  • Last Update Date: 01/22/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 2769472752
  • Enrollment ID: I20040512001680

Medical Identifiers

Medical identifiers for Stephen Grayson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1063405496NPI-NPPES
4147732OtherMVP HEALTHPLAN ID #
4702133OtherGHI PPO PROVIDER ID
0511100000034OtherFIDELISCARE PROVIDER ID#
2665341OtherAETNA HMO PROVIDER ID#
10112151-D815OtherCDPHP PROV & GRP PIN
P1974829OtherOXFORD HEALTHPLAN ID #
000000093405OtherGHI HMO PROVIDER ID#
2H7971OtherEMPIRE BCBS PROVIDER PIN#
5C7511OtherHEALTHNET PROVIDER ID#
77599226OtherAETNA PPO PROVIDER ID#

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 133867 (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. Stephen Grayson allows following entities to bill medicare on his behalf.
Entity NamePhelps Memorial Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720185267
PECOS PAC ID: 1658283981
Enrollment ID: O20031104000490
Entity NameNorthern Westchester Hospital Association
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912992215
PECOS PAC ID: 9335040112
Enrollment ID: O20040115000420

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. Stephen Grayson 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
Stephen Grayson, MD
400 E Main St, Northern Westchester Hospital, Medical Affairs,
Mount Kisco, NY 10549-3417

Ph: (914) 666-1200
Stephen Grayson, MD
400 E Main St, Northern Westchester Hospital Emergency Dept,
Mount Kisco, NY 10549-3417

Ph: (914) 666-1254

Reviews and Comments


Emergency Medicine Doctors in Mount Kisco, NY

Dr. Herberth Balsells, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 E Main St, Mount Kisco, NY 10549
Phone: 914-666-1254    
Lisa J Geller, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 E Main St, Mount Kisco, NY 10549
Phone: 914-666-1254    
Dr. Frank Quintero, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 E Main St, Mount Kisco, NY 10549
Phone: 914-666-1254    
Jonathan Gamss, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 400 E Main St, Northern Westchester Hospital, Mount Kisco, NY 10549
Phone: 914-666-1680    Fax: 914-666-1965
Timothy Haydock, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 400 E Main St, Northern Westchester Hospital - Emergency Department, Mount Kisco, NY 10549
Phone: 914-666-1254    Fax: 914-666-1931
Eugene Spagnuolo, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 400 E Main St, Northern Westchester Hospital, Medical Affairs Office, Mount Kisco, NY 10549
Phone: 914-242-8318    Fax: 914-666-1965

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.