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

Dr. Jonathan Ross Kaufmann, DO

Individual provider Internal Medicine Physician · NPI 1104953843

Dr. Jonathan Ross Kaufmann, DO practises Internal Medicine in Dover, Delaware. Graduated from Philadelphia College of Osteopathic Medicine in 2006, 20 years ago. Practices with Bayhealth Medical Center, Inc, a 401-clinician group and accepts Medicare assignment. Licensed in Delaware.

Years since qualifying
20
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
DE
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

640 S State St
Dover, DE 19901
Phone: (302) 744-7581
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C7-0003467 (DE)

Record details

NPI number1104953843
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESJuly 16, 2018

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2006 (20 years in practice)
Group practice Bayhealth Medical Center, Inc — 401 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients82
Services billed 147 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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 Bayhealth Medical Center, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 401 clinicians in the practice; 12 are shown here.

Other providers in Dover