Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mary Margaret Krzystowczyk, NP

Individual provider Primary Care Nurse Practitioner · NPI 1912504978

Mary Margaret Krzystowczyk, NP is a Primary Care Nurse Practitioner in Traverse City, Michigan. Practices as a sole proprietor. Licensed in Colorado and Michigan.

Licensed in
CO, MI
In the registry since
2020
Specialties on file
3
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

1105 Sixth St
Traverse City, MI 49684-2300
Phone: (231) 935-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Primary Care Nurse Practitioner (primary) Taxonomy 363LP2300X · Licence 4704301134 (MI)
Gerontology Nurse Practitioner Taxonomy 363LG0600X · Licence AG01200132 (CO)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence AG01200132 (CO)

Record details

NPI number1912504978
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedOctober 2, 2020
Last updated in NPPESJuly 16, 2026
Certification dateJuly 16, 2026

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 patients28
Services billed 67 a service is one billed item, such as a visit, a test or a procedure
Average patient age85

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.

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