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

Mrs. Kristen Antoinette Knowles, NP

Individual provider Adult Health Nurse Practitioner · NPI 1962912717

Mrs. Kristen Antoinette Knowles, NP is a Nurse Practitioner in Prince Frederick, Maryland. Qualified in 2017, 9 years ago. Practices with Calvert Internal Medicine Group, PA, a 40-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia, Maryland and New York.

Years since qualifying
9
Licensed in
DC, MD, NY
In the registry since
2017
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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

110 Hospital Rd Ste 303
Prince Frederick, MD 20678
Phone: (516) 655-8134
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 13937 254th St, Rosedale, NY 11422-2615 — (516) 655-8134

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence R232674 (MD)
Adult Health Nurse Practitioner Taxonomy 363LA2200X · Licence RN1050180 (DC)
Adult Health Nurse Practitioner Taxonomy 363LA2200X · Licence F308467-1 (NY)

Record details

NPI number1962912717
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedOctober 6, 2017
Last updated in NPPESMarch 30, 2020
Certification dateMarch 30, 2020

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 Calvert Internal Medicine Group, Pa — 40 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 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 patients625
Services billed 2,916 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 $22 1 payment · 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 Calvert Internal Medicine Group, PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 40 clinicians in the practice; 12 are shown here.

Other providers in Prince Frederick