Oscar S Lopez, MD - Medicare Psychiatry in Williamsville, NY

  1. Home
  2. Psychiatry & Neurology
  3. NY
  4. Williamsville
Oscar S Lopez, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Williamsville, New York. He graduated from medical school in 1960 and has 64 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Mercy Hospital Of Buffalo and his current practice location is 531 Farber Lakes Dr, Williamsville, New York. You can reach out to his office (for appointments etc.) via phone at (716) 632-5450.

Oscar S Lopez is licensed to practice in New York (license number MD 098285) 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 1558315879.

Contact Information

Oscar S Lopez, MD
531 Farber Lakes Dr,
Williamsville, NY 14221-5773
(716) 632-5450
Not Available

Map and Direction




Physician's Profile

Full NameOscar S Lopez
GenderMale
SpecialityPsychiatry
Experience64 Years
Location531 Farber Lakes Dr, Williamsville, New York
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:
  • Oscar S Lopez graduated from medical school in 1960
  NPI Data:
  • NPI Number: 1558315879
  • Provider Enumeration Date: 05/20/2006
  • Last Update Date: 08/09/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 2769475730
  • Enrollment ID: I20050107000630

Medical Identifiers

Medical identifiers for Oscar S Lopez such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558315879NPI-NPPES
00594876MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 098285 (New York)Secondary
2084P0800XPsychiatry & Neurology - Psychiatry MD 098285 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Hospital Of BuffaloBuffalo, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Hospital Of Buffalo8729991666165

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. Oscar S Lopez allows following entities to bill medicare on his behalf.
Entity NameSisters Of Charity Hospital Of Buffalo New York
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790727543
PECOS PAC ID: 6204749153
Enrollment ID: O20031126000557
Entity NameKenmore Mercy Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770598104
PECOS PAC ID: 7517870462
Enrollment ID: O20040319000138
Entity NameMount St. Marys Hospital Of Niagara Falls
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043394745
PECOS PAC ID: 4082523790
Enrollment ID: O20040403000031
Entity NameMercy Hospital Of Buffalo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164464921
PECOS PAC ID: 8729991666
Enrollment ID: O20040702001253
Entity NameEastern Niagara Hospital Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063400539
PECOS PAC ID: 1254389620
Enrollment ID: O20050112000475

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. Oscar S Lopez 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
Oscar S Lopez, MD
531 Farber Lakes Dr,
Williamsville, NY 14221-5773

Ph: (716) 632-5450		Oscar S Lopez, MD
531 Farber Lakes Dr,
Williamsville, NY 14221-5773

Ph: (716) 632-5450

Reviews and Comments


Psychiatry & Neurology Doctors in Williamsville, NY

Syed Ahmed, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 9 Limestone Dr, Williamsville, NY 14221
Phone: 716-626-4200    
Junaid Hashim, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 5904 Sheridan Dr, Ste 1, Williamsville, NY 14221
Phone: 716-886-5493    Fax: 716-886-5835
Dr. Modhi Alkhaldi,
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 5851 Main St, Williamsville, NY 14221
Phone: 716-932-6080    Fax: 716-332-4245
Hak J Ko, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 5687 Main St, Suite 102, Williamsville, NY 14221
Phone: 716-204-3541    Fax: 716-204-3542
Dr. Sandra A. Block, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 325 Essjay Rd, Suite 210, Williamsville, NY 14221
Phone: 716-630-1122    Fax: 716-250-5924
Dr. Brian S. Joseph, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 5820 Main St, 206, Williamsville, NY 14221
Phone: 716-633-5997    Fax: 716-634-2595
David Lichter, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 400 International Dr., Williamsville, NY 14221
Phone: 716-631-3555    Fax: 716-631-9525

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.