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

Melissa Ann Knapp, FNP-CNP

Individual provider Family Nurse Practitioner · NPI 1922865435

Melissa Ann Knapp, FNP-CNP is a Nurse Practitioner in Owasso, Oklahoma. Graduated from University of Texas Medical Branch at Galveston in 2023, 3 years ago. Practices with Gastroenterology Specialists, Inc, a 22-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
3
Trained at
University of Texas Medical Branch at Galveston
Licensed in
OK
In the registry since
2024
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Practice location Address checks out

12455 E 100th St N Ste 270
Owasso, OK 74055-4676
Phone: (918) 940-8500
Fax: (918) 940-8399
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

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 217063 (OK)

Record details

NPI number1922865435
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP-CNP
Sole proprietorNo
NPI enumeratedMarch 1, 2024
Last updated in NPPESMarch 12, 2026
Certification dateMarch 12, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolUNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated 2023 (3 years in practice)
Group practice Gastroenterology Specialists, Inc. — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $1,190 64 payments · a meal or drink at a meeting or visit, not a fee
Education $84 1 payment · educational material or training, 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 Gastroenterology Specialists, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 22 clinicians in the practice; 12 are shown here.

Other providers in Owasso