Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Nicholas J. Day, MD

Individual provider Internal Medicine Physician · NPI 1376862227

Nicholas J. Day, MD practises Gastroenterology in Clifton Springs, New York. Qualified in 2010, 16 years ago. Practices with Rochester General Hospital, a 1,197-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Michigan and New York.

Years since qualifying
16
Licensed in
MI, NY
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2 Coulter Rd Ste 1740
Clifton Springs, NY 14432-1122
Phone: (315) 462-9478
Fax: (315) 462-6707
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 875 Pre Emption Rd, Geneva, NY 14456-2042 — (315) 462-9478
  • 1304 Driving Park Ave, Newark, NY 14513-1059 — (315) 359-2130
  • 601 Elmwood Ave, Rochester, NY 14642-0001 — (585) 275-4711

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 283388 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301096131 (MI)

Record details

NPI number1376862227
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 18, 2010
Last updated in NPPESSeptember 12, 2022
Certification dateSeptember 12, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Rochester General Hospital — 1197 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 550 times · 99th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 361 times · 97th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients243
Services billed 485 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Rochester General Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1197 clinicians in the practice; 12 are shown here.

Other providers in Clifton Springs