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

Mr. Michael Christopher Hassert, MSN, APN, AGNP-C

Individual provider Gerontology Nurse Practitioner · NPI 1972119014

Mr. Michael Christopher Hassert, MSN, APN, AGNP-C is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2017, 9 years ago. Practices with Karefirst Missouri PC, a 13-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
9
Licensed in
MO
In the registry since
2020
Specialties on file
2
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

6637 Berthold Ave
Saint Louis, MO 63139-3318
Phone: (573) 247-9982
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence 2023007556 (MO)
Gerontology Nurse Practitioner Taxonomy 363LG0600X · Licence 2023007556 (MO)

Record details

NPI number1972119014
Entity typeIndividual (Type 1)
GenderMale
Credentials MSN , APN , AGNP-C
Sole proprietorYes
NPI enumeratedSeptember 22, 2020
Last updated in NPPESMarch 15, 2024
Certification dateMarch 15, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Karefirst Missouri Pc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Saint Louis