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

Dr. Harrison Mark McDonald, DO

Individual provider Internal Medicine Physician · NPI 1447251798

Dr. Harrison Mark McDonald, DO practises Internal Medicine in Lake Havasu City, Arizona. Qualified in 1991, 35 years ago. Practices with Harrison Mark McDonald DO PLLC, a 2-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
35
Licensed in
AZ
In the registry since
2005
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.

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Practice location Address checks out

1923 McCulloch Blvd N Ste 101
Lake Havasu City, AZ 86403
Phone: (928) 208-4611
Fax: (928) 453-4645
Show map & directions

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

Additional practice locations (1)

  • 309 Lake Havasu Ave S, Lake Havasu City, AZ 86403-9309 — (928) 453-1970

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2793 (AZ)

Record details

NPI number1447251798
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedAugust 9, 2005
Last updated in NPPESJanuary 26, 2026
Certification dateJanuary 26, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Harrison Mark McDonald Do Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue 249 times · 93rd percentile
Removal of skin lesions 1–10 times
Removal or shaving of skin growth 1–10 times
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients942
Services billed 8,901 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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.

  • Havasu Regional Medical Center Hospital · Lake Havasu City, AZ · listed as Havasu Regional Medical Center LLC
  • La Paz Regional Hospital Hospital · Parker, AZ · listed as La Paz Regional Hospital Inc
  • Kingman Regional Medical Center Hospital · Kingman, AZ
  • Family Care Home Health Agency Home health agency · Bullhead City, AZ
  • Foundation Home Health, Llc Home health agency · Lake Havasu City, AZ
  • Havasu Regional Medical Center Home Health Home health agency · Lake Havasu City, AZ
  • River Valley Home Health Home health agency · Lake Havasu, AZ

Colleagues at Harrison Mark McDonald DO PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Lake Havasu City