Dr. Guillermo E. Ferrer, MD

Dr. Ferrer practices at Drs Ferrer and Monaghan Vein and Aesthetic Center in Ithaca, New York.

Dr. Ferrer's NPI, 1659470557, was assigned on September 21, 2006. Dr. Ferrer graduated from University of Zulia in 1980. Dr. Ferrer holds New York license 161912.

Dr. Ferrer's primary practice is Drs Ferrer and Monaghan Vein and Aesthetic Center, at 8 Brentwood Dr, Ithaca, NY 14850 in Tompkins County. The practice phone is (605) 257-2116.

Dr. Ferrer's primary practice is Drs Ferrer and Monaghan Vein and Aesthetic Center in Ithaca, New York. Dr. Ferrer is also affiliated with Cayuga Medical Center. The medical group on file is Ferrer & Monaghan Vein and Aesthetic Center. Dmand AI also links Dr. Ferrer to 1 more group practice or clinic, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ferrer practices, 2 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Ferrer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Ferrer is licensed in New York.

CMS data shows 624 Medicare services from Dr. Ferrer across 11 procedure codes in 2024, for 190 Medicare patients. Medicare paid $70,217 for them. Every service was in an office.

CMS counts 190 Medicare patients who saw Dr. Ferrer in 2026. The largest group is 65 to 74, with 84 patients. 66% of them have high blood pressure, and 66% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Ferrer's median patient age at 63, with 71% women.

In 2026, Dr. Ferrer wrote 111 Medicare Part D claims for 66 patients. 68% of them were for generic drugs. CMS names the drug for 69 of them, across 2 drugs with 11 or more claims each, at $13,117 in total drug cost. In 2023, CMS named 59 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Ferrer for performance year 2026, reported through an alternative payment model (APM). Dr. Ferrer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 138 procedures of varicose vein removal by Dr. Ferrer, more than 87% of the clinicians it reports for that procedure.

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 56 general payments to Dr. Ferrer from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 64% of the total. Medtronic Vascular, Inc. paid the most, $1,392.

Dr. Ferrer graduated from University of Zulia in 1980.