Dr Geraldine C Diaz, DO - Medicare Anesthesiology in Brentwood, NY

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Dr Geraldine C Diaz, DO is a medicare enrolled "Anesthesiology" physician in Brentwood, New York. She went to Philadelphia College Of Osteopathic Medicine and graduated in 2001 and has 25 years of diverse experience with area of expertise as Anesthesiology. She is a member of the group practice Randn Anesthesia Pllc, Sedation Vacation Perioperative Medicine Pllc, North American Partners In Anesthesia Llp and her current practice location is 601 Suffolk Ave, Brentwood, New York. You can reach out to her office (for appointments etc.) via phone at (631) 231-4455.

Dr Geraldine C Diaz is licensed to practice in New York (license number 225683) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1003987967.

Contact Information

Dr Geraldine C Diaz, DO
601 Suffolk Ave,
Brentwood, NY 11717-4309
(631) 231-4455
Not Available

Map and Direction




Physician's Profile

Full NameDr Geraldine C Diaz
GenderFemale
SpecialityAnesthesiology
Experience25 Years
Location601 Suffolk Ave, Brentwood, New York
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Geraldine C Diaz attended and graduated from Philadelphia College Of Osteopathic Medicine in 2001
  NPI Data:
  • NPI Number: 1003987967
  • Provider Enumeration Date: 11/13/2006
  • Last Update Date: 01/30/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 3375544935
  • Enrollment ID: I20070124000564

Medical Identifiers

Medical identifiers for Dr Geraldine C Diaz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003987967NPI-NPPES
Z120519OtherAZMEDICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 036126434 (Illinois)Secondary
207L00000XAnesthesiology 225683 (New York)Primary
207LC0200XAnesthesiology - Critical Care Medicine 036126434 (Illinois)Secondary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Randn Anesthesia Pllc206273779432
Sedation Vacation Perioperative Medicine Pllc175965859486
North American Partners In Anesthesia Llp7719885771427

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. Dr Geraldine C Diaz allows following entities to bill medicare on her behalf.
Entity NameMontefiore Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063525152
PECOS PAC ID: 3779496021
Enrollment ID: O20031113000235
Entity NameNorth American Partners in Anesthesia LLP
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649264706
PECOS PAC ID: 7719885771
Enrollment ID: O20040108000176
Entity NameNew York Cardiovascular Anesthesiologists, P.C.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801834411
PECOS PAC ID: 5799676623
Enrollment ID: O20040322000941
Entity NameR&n Anesthesia PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447657275
PECOS PAC ID: 2062737794
Enrollment ID: O20150220001286
Entity NameSedation Vacation Perioperative Medicine PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891235404
PECOS PAC ID: 1759658594
Enrollment ID: O20170525001955

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. Dr Geraldine C Diaz 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
Dr Geraldine C Diaz, DO
450 Clarkson Ave Ste 6,
Brooklyn, NY 11203-2012

Ph: (718) 270-2331		Dr Geraldine C Diaz, DO
601 Suffolk Ave,
Brentwood, NY 11717-4309

Ph: (631) 231-4455

Reviews and Comments


Anesthesiology Doctors in Brentwood, NY

Eve Charasz, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 601 Suffolk Ave, Brentwood, NY 11717
Phone: 631-231-4455    
Miss Michelle Di Guglielmo, MD
Anesthesiology
Medicare: Accepting Medicare Assignments
Practice Location: 601 Suffolk Ave, Brentwood, NY 11717
Phone: 631-231-4455    

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.