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

Aaron D Simms, MD

Individual provider Internal Medicine Physician · NPI 1578593216

Aaron D Simms, MD practises Internal Medicine in Lock Haven, Pennsylvania. Graduated from University of California, San Diego School of Medicine in 1984, 42 years ago. Practices with Maverick Emergency Medicine Associates PA, a 13-clinician group and accepts Medicare assignment. Licensed in Pennsylvania and Texas.

Years since qualifying
42
Trained at
University of California, San Diego School of Medicine
Licensed in
PA, TX
In the registry since
2006
Specialties on file
2
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

24 Cree Dr
Lock Haven, PA 17745-2639
Phone: (570) 893-5040
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD033949E (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence K4247 (TX)

Record details

NPI number1578593216
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 4, 2006
Last updated in NPPESJune 22, 2022
Certification dateJune 22, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Maverick Emergency Medicine Associates Pa — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients149
Services billed 279 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Maverick Emergency Medicine Associates PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 13 clinicians in the practice; 7 are shown here.

Other providers in Lock Haven