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

Mrs. Erin Marie Williamson, RN, MSN, APRN

Individual provider Adult Health Nurse Practitioner · NPI 1487884995

Mrs. Erin Marie Williamson, RN, MSN, APRN is a Nurse Practitioner in Tulsa, Oklahoma. Qualified in 2008, 18 years ago. Practices with Ahs Oklahoma Physician Group LLC, a 315-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Kansas and Oklahoma.

Years since qualifying
18
Licensed in
KS, OK
In the registry since
2009
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

See every abbreviation used in this directory →

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Practice location Address checks out

1145 S Utica Ave Ste 701
Tulsa, OK 74104 Not confirmed with CMS for 12 years — call before visiting
Phone: (918) 582-6544
Fax: (918) 582-6549
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

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 106894 (OK)
Adult Health Nurse Practitioner Taxonomy 363LA2200X · Licence 5374935091 (KS)

Record details

NPI number1487884995
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , MSN , APRN
Sole proprietorNo
NPI enumeratedJuly 17, 2009
Last updated in NPPESMay 6, 2014

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Ahs Oklahoma Physician Group Llc — 315 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 patients268
Services billed 378 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 $2,238 89 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $903 3 payments · travel or lodging paid or reimbursed, such as to attend a conference

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 Ahs Oklahoma Physician Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 315 clinicians in the practice; 12 are shown here.

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