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

Hashim Mumtaz, MD

Individual provider Hospitalist Physician · NPI 1184885048

Hashim Mumtaz, MD practises Internal Medicine in Oshkosh, Wisconsin. Qualified in 2004, 22 years ago. Practices with Ascension Medical Group-Fox Valley Wisconsin, Inc, a 260-clinician group and accepts Medicare assignment. Licensed in Minnesota and Wisconsin.

Years since qualifying
22
Licensed in
MN, WI
In the registry since
2008
Specialties on file
3
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

500 S Oakwood Rd
Oshkosh, WI 54904-7944 Not confirmed with CMS for 10 years — call before visiting
Phone: (920) 223-2000
Fax: (920) 223-1230
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 64902 (WI)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X
Hospitalist Physician Taxonomy 208M00000X · Licence 53725 (MN)

Record details

NPI number1184885048
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 23, 2008
Last updated in NPPESMarch 1, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Ascension Medical Group-Fox Valley Wisconsin, Inc — 260 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 patients128
Services billed 360 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.

Practises at

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

Colleagues at Ascension Medical Group-Fox Valley Wisconsin, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 260 clinicians in the practice; 12 are shown here.

Other providers in Oshkosh