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

Mrs. Karen T Stadnicki, PAC

Individual provider Physician Assistant · NPI 1861419384

Mrs. Karen T Stadnicki, PAC is a Physician Assistant in San Francisco, California. Qualified in 2002, 24 years ago. Practices with Circle Medical Care of California, a 68-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Arizona, California, Illinois and New York and 2 more.

Years since qualifying
24
Licensed in
AZ, CA, IL, NY, VA, WI
In the registry since
2006
Specialties on file
6
What do these letters mean?
PAC — Physician Assistant, Certified
A physician assistant holding current national certification; usually written PA-C.

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Practice location Address checks out

333 1st St Ste A
San Francisco, CA 94105-2661
Phone: (888) 803-3370
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 9700 N 91st St Ste A115, Scottsdale, AZ 85258-5036 — (888) 803-3321
  • 156 William St Rm 303, New York, NY 10038-5307 — (888) 803-3370
  • 2800 Eisenhower Ave Ste 220, Alexandria, VA 22314-4587 — (888) 803-3370
  • 790 N Milwaukee St Ste 313, Milwaukee, WI 53202-4148 — (888) 803-3370

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 085001824 (IL)
Physician Assistant Taxonomy 363A00000X · Licence PA61352 (CA)
Physician Assistant Taxonomy 363A00000X · Licence 028637 (NY)
Physician Assistant Taxonomy 363A00000X · Licence 9073 (AZ)
Physician Assistant Taxonomy 363A00000X · Licence 0110011223 (VA)
Physician Assistant Taxonomy 363A00000X · Licence 716223 (WI)

Record details

NPI number1861419384
Entity typeIndividual (Type 1)
GenderFemale
Credentials PAC
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESSeptember 11, 2025
Certification dateSeptember 11, 2025

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Circle Medical Care Of California — 68 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 $21 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.

Colleagues at Circle Medical Care of California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 68 clinicians in the practice; 12 are shown here.

Other providers in San Francisco