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

Andrew Martin Hemmen, MD

Individual provider Internal Medicine Physician · NPI 1043316847

Andrew Martin Hemmen, MD practises Internal Medicine in Mesa, Arizona. Qualified in 2003, 23 years ago. Practices with Hospitalist Medicine Physicians of Texas PLLC, a 701-clinician group and accepts Medicare assignment. Licensed in New Mexico.

Years since qualifying
23
Licensed in
NM
In the registry since
2006
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

6644 E Baywood Ave
Mesa, AZ 85206-1747
Phone: (480) 981-4391
Fax: (480) 981-4624
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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 MD2006-0603 (NM)

Record details

NPI number1043316847
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESMarch 16, 2026
Certification dateMarch 16, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Hospitalist Medicine Physicians Of Texas Pllc — 701 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
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 patients199
Services billed 539 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.

Colleagues at Hospitalist Medicine Physicians of Texas PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 701 clinicians in the practice; 12 are shown here.

Other providers in Mesa