DR. JEFFREY W MARTINEZ M.D.
NPI 1801866868
Internal Medicine - Infectious Disease in Williamsville, NY
About Dr. Jeffrey W Martinez M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JEFFREY W MARTINEZ M.D. (NPI 1801866868) is an individual infectious disease provider in Williamsville, New York, licensed in New York (252402) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Sisters Of Charity Hospital, and is a graduate of State University Of New York At Buffalo School Of Medicine (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Jeffrey W Martinez M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Jeffrey Martinez reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Williamsville, NY 14221
- Reassigned Medicare billing, New York enrollment
- 332 clinicians in this Medicare group
Cheektowaga, NY 14225
- Reassigned Medicare billing, New York enrollment
- 515 clinicians in this Medicare group
Kenmore, NY 14217
- Reassigned Medicare billing, New York enrollment
- 271 clinicians in this Medicare group
Buffalo, NY 14220
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Mercy Hospital Of Buffalo
- 499 clinicians in this Medicare group
Lewiston, NY 14092
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Mount St. Marys Hospital Of Niagara Falls
- 289 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sisters Of Charity Hospital
Acute Care Hospitals · Buffalo, NYKenmore Mercy Hospital
Acute Care Hospitals · Kenmore, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14221 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILLIAMSVILLE, NY 14221
WILLIAMSVILLE, NY 14221
WILLIAMSVILLE, NY 14221
WILLIAMSVILLE, NY 14221
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Jeffrey Martinez's NPI number?
The NPI number for Jeffrey Martinez is 1801866868. It was assigned to this individual provider in the NPPES registry on January 24, 2006.
Where is Jeffrey Martinez located?
Jeffrey Martinez practices at 1829 Maple Rd Suite 202, Williamsville, NY 14221. The listed phone number is (716) 204-5933.
What is Jeffrey Martinez's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Jeffrey Martinez enrolled in Medicare?
Yes. Jeffrey Martinez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Jeffrey Martinez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Martinez reassigns Medicare benefits to 5 organizations: Trinity Medical Wny PC (Williamsville, NY), Sisters Of Charity Hospital Of Buffalo New York (Cheektowaga, NY), Kenmore Mercy Hospital (Kenmore, NY), Chs Neuroscience Group (Buffalo, NY) and Mount St. Mary's Hospital Of Niagara Falls (Lewiston, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jeffrey Martinez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Jeffrey Martinez affiliated with any hospitals?
According to CMS data, Jeffrey Martinez is affiliated with Sisters Of Charity Hospital and Kenmore Mercy Hospital.
When was this NPI record last updated?
The NPPES record for Jeffrey Martinez was last updated on March 20, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.