PALO VERDE INTERNAL MEDICINE
NPI 1033435599
Internal Medicine in Lake Havasu City, AZ

Q: What is Harrison Mark Mcdonald Do PLLC's NPI number?

The NPI number for Harrison Mark Mcdonald Do PLLC is 1033435599. It was assigned to this organization in the NPPES registry on April 8, 2010. The provider is doing business as Palo Verde Internal Medicine.

Q: What is Harrison Mark Mcdonald Do PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since April 08, 2010

1851 MESQUITE AVE, SUITE 106, LAKE HAVASU CITY, AZ 86403(298) 208-4611(928) 453-4645 Get Directions Write a Review

NPPES record last updated: June 21, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Palo Verde Internal Medicine NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PALO VERDE INTERNAL MEDICINE (NPI 1033435599) is a healthcare organization registered as an internal medicine in Lake Havasu City, Arizona and active in the NPI registry since April 2010. The organization lists Linda Mcdonald, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1033435599

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameHARRISON MARK MCDONALD DO PLLC

Location Address1851 MESQUITE AVE, SUITE 106Lake Havasu City, AZ 86403-5677

Mailing Address1851 Mesquite Ave, Suite 106Lake Havasu City, AZ 86403-5677 · (298) 208-4611 · Fax (928) 453-4645

Phone(298) 208-4611

Fax(928) 453-4645

Organization SubpartNo

Authorized OfficialLinda McdonaldOffice Manager · (928) 208-4611

Enumeration DateApril 8, 2010

Last NPPES UpdateJune 21, 2012

✔ NPI 1033435599 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in AZ · 2793

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1851 MESQUITE AVE, Lake Havasu City, AZ 86403

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Other Names 1

Doing Business AsPalo Verde Internal Medicine

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Palo Verde Internal Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by March 31, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date

StateArizonaEnrollment IDO20100615000684Non-DME Part B · Clinic/Group PracticeDue dateMarch 31, 2027

Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Palo Verde Internal Medicine, which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Haylee Younis, FNP-C

Nurse Practitioner

NPI 1881041200

1923 MCCULLOCH BLVD N STE 101
Lake Havasu City, AZ 86403

(928) 208-4611

✔ PECOS✔ Accepts Medicare0.2 mi

Harrison Mcdonald, D.O.

Internal Medicine

NPI 1447251798

1923 MCCULLOCH BLVD N SUITE 101
Lake Havasu City, AZ 86403

(928) 208-4611

✔ PECOS✔ Accepts Medicare0.2 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Harrison Mark Mcdonald Do PLLC's NPI number?

The NPI number for Harrison Mark Mcdonald Do PLLC is 1033435599. It was assigned to this organization in the NPPES registry on April 8, 2010. The provider is doing business as Palo Verde Internal Medicine.

Where is Harrison Mark Mcdonald Do PLLC located?

Harrison Mark Mcdonald Do PLLC is located at 1851 Mesquite Ave Suite 106, Lake Havasu City, AZ 86403. The listed phone number is (298) 208-4611.

What is Harrison Mark Mcdonald Do PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Harrison Mark Mcdonald Do PLLC enrolled in Medicare?

Yes. Harrison Mark Mcdonald Do PLLC is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Harrison Mark Mcdonald Do PLLC was last updated on June 21, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.