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
Mailing address6644 E Baywood Ave, Banner Baywood Medical Center, Mesa, AZ 85206

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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