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

Amy Guan, MS, APN

Individual provider Primary Care Nurse Practitioner · NPI 1801398813

Amy Guan, MS, APN is a Nurse Practitioner in Saint Louis, Missouri. Qualified in 2017, 9 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Missouri.

Years since qualifying
9
Licensed in
IL, MO
In the registry since
2018
Specialties on file
3
What do these letters mean?
MS — Master of Science
A graduate science degree.
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

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Practice location Address checks out

12348 Old Tesson Rd Ste 250
Saint Louis, MO 63128-2261
Phone: (314) 272-2727
Show map & directions

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

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence 2023012036 (MO)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence 209016579 (IL)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence 2023014672 (MO)

Record details

NPI number1801398813
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , APN
Sole proprietorNo
NPI enumeratedMarch 6, 2018
Last updated in NPPESSeptember 11, 2023
Certification dateSeptember 11, 2023

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 Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 1,701 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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $2,126 129 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mercy Clinic East Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 573 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis