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

Catherine Beratio Nullmeyer, MD

Individual provider Family Medicine Physician · NPI 1629200753

Catherine Beratio Nullmeyer, MD is registered under Family Practice in Morton, Illinois. Qualified in 1992, 34 years ago. Practices with Osf Multi-Specialty Group, a 2,128-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
34
Licensed in
IL
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

435 Maxine Dr
Morton, IL 61550-2498
Phone: (309) 263-2424
Fax: (309) 284-2244
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036129168 (IL)

Record details

NPI number1629200753
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2009
Last updated in NPPESSeptember 5, 2024
Certification dateSeptember 5, 2024

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Osf Multi-Specialty Group — 2128 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 patients1,281
Services billed 3,890 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Osf Multi-Specialty Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2128 clinicians in the practice; 12 are shown here.

Other providers in Morton