Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Christopher John Krupa-Schayer, APRN, AGACNP-BC

Individual provider Acute Care Nurse Practitioner · NPI 1164946760

Christopher John Krupa-Schayer, APRN, AGACNP-BC is a Nurse Practitioner in Portland, Maine. Graduated from Yale University School of Medicine in 2017, 9 years ago. Practices with Mainehealth, a 2,615-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Connecticut and Maine.

Years since qualifying
9
Trained at
Yale University School of Medicine
Licensed in
CT, ME
In the registry since
2017
Specialties on file
2
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

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Practice location Address checks out

818 Congress St
Portland, ME 04102-3112
Phone: (207) 773-8161
Fax: (207) 773-1489
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 85 Seymour St, Hartford, CT 06106-5501 — (860) 972-1177
  • 9 Healthcare Dr Ste 105, Biddeford, ME 04005-9445 — (207) 282-3666

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence CNP231149 (ME)
Acute Care Nurse Practitioner Taxonomy 363LA2100X · Licence 7117 (CT)

Record details

NPI number1164946760
Entity typeIndividual (Type 1)
GenderMale
Credentials APRN , AGACNP-BC
Sole proprietorNo
NPI enumeratedJuly 26, 2017
Last updated in NPPESMay 27, 2025
Certification dateMay 27, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolYALE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients224
Services billed 496 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 Mainehealth

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2615 clinicians in the practice; 12 are shown here.

Other providers in Portland