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

Mary Theresa Steinhoff, FNP

Individual provider Family Nurse Practitioner · NPI 1538525381

Mary Theresa Steinhoff, FNP is a Nurse Practitioner in Fallbrook, California. Qualified in 2015, 11 years ago. Practices with Rancho Family Medical Group Inc, a 112-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
11
Licensed in
CA
In the registry since
2016
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

521 E Elder St Ste 105
Fallbrook, CA 92028-3082
Phone: (760) 728-8344
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 28780 Single Oak Dr Ste 260, Temecula, CA 92590-5534 — (951) 676-4193

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95003293 (CA)

Record details

NPI number1538525381
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedJanuary 9, 2016
Last updated in NPPESFebruary 20, 2020
Certification dateFebruary 20, 2020

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Rancho Family Medical Group Inc — 112 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 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 patients439
Services billed 1,347 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 $112 7 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.

Colleagues at Rancho Family Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 112 clinicians in the practice; 12 are shown here.

Other providers in Fallbrook