Marcelo Guillmero Gareca, MD
Infectious Disease Physician · Cortland, NY
Marcelo Guillmero Gareca, MD is an infectious disease physician with a practice address in Cortland, New York, and NPI 1346221959, issued on Nov 10, 2005. Check the license (New York 326224, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marcelo Guillmero Gareca
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 326224 NY
MD065832L PA
Self-reported in NPPES; status is on the state search - Practice location
- 11 Alvena Ave, Cortland, NY 13045
- Phone
- (607) 428-5701
- Enumerated
- Nov 10, 2005
- Record last updated
- Jun 3, 2026
- Medicare enrollment
- Enrolled (PECOS I20240412003704); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 970 in New York → Look up another NPI →
Also registered at 11 Alvena Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Avery, NPNurse Practitioner1205785219
- Peter Iannotta, R.P.A.-CMedical Physician Assistant1174680144
- Jacqueline Tomko, NP RNC MSNWomen's Health Nurse Practitioner1467535898
Verify Marcelo Guillmero Gareca in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 326224Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average infectious disease physician in 2024
321 Medicare Part D claims for 110 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Cephalexin30 claims
- Ciprofloxacin Hcl16 claims
- Doxycycline Hyclate14 claims
- Linezolid14 claims
- Mupirocin14 claims
- Ultra-Fine Mini Pen Needle14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Guthrie Medical Group PCCorning, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcelo Guillmero Gareca among 970 infectious disease physician records in New York
Marcelo Guillmero Gareca, MD is one of 970 infectious disease physician records with a practice address in New York. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1992 · median 2002 among the 624 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in New York
There are 970 infectious disease physician records in New York.
All 970 in New York → Every provider in Cortland → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Ngozi Mezu, MDCortland, NY 130451003062183
- Keith Collins, M.D.Plattsburgh, NY 129011568568780
- Wouter Rietsema, MDPlattsburgh, NY 129011699832535
- Rhonda Dillon, M.D.Syracuse, NY 132031578907366
- Muhammad Hasan, M.D.Syracuse, NY 132031689761678
- Helen Jacoby, MDSyracuse, NY 132031467417493
- Sally Klemens, MDSyracuse, NY 132031538194832
- Cynthia Wong, MDSyracuse, NY 132031891751418
Common questions
What is Marcelo Guillmero Gareca, MD's NPI number?
Marcelo Guillmero Gareca, MD's National Provider Identifier (NPI) is 1346221959, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marcelo Guillmero Gareca, MD located?
The NPPES record lists a practice address at 11 Alvena Ave, Cortland, NY, 13045. Phone: (607) 428-5701. Providers update this record themselves, so call before visiting.
How can I verify Marcelo Guillmero Gareca, MD's license?
NPPES lists New York license number 326224, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marcelo Guillmero Gareca, MD prescribe under Medicare Part D?
In 2024, Marcelo Guillmero Gareca, MD had 321 Medicare Part D claims for 110 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.