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

Dr. Mark Paul Postacchini, MD

Individual provider Internal Medicine Physician · NPI 1255620019

Dr. Mark Paul Postacchini, MD is an Internal Medicine in Mesa, Arizona. Qualified in 2010, 16 years ago. Practices with Banner - University Hospital Based Physicians LLC, a 347-clinician group and accepts Medicare assignment. Licensed in Arizona, Illinois and Texas.

Years since qualifying
16
Licensed in
AZ, IL, TX
In the registry since
2011
Specialties on file
4
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 Banner Baywood Medical Ctr
Mesa, AZ 85206
Phone: (480) 321-3900
Fax: (480) 321-3840
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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 51279 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125060059 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence Q0343 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence 51279 (AZ)

Record details

NPI number1255620019
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 1, 2011
Last updated in NPPESMarch 9, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Banner - University Hospital Based Physicians Llc — 347 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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