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MIDWEST INTERNAL MEDICINE PLLC
NPI 1619019049
Internal Medicine in Lake Havasu City, AZ

Active since February 13, 2007CLIA 03D0967428 · Waiver
1840 MESQUITE AVE STE B, LAKE HAVASU CITY, AZ 86403(928) 453-8500(928) 453-3660 Get Directions Write a Review

NPPES record last updated: March 7, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 7, 2025, Jul 28, 2022, Feb 10, 2022 and 1 more (4 updates tracked since 2016).

About Midwest Internal Medicine Pllc NPPES

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

MIDWEST INTERNAL MEDICINE PLLC (NPI 1619019049) is a healthcare organization registered as an internal medicine in Lake Havasu City, Arizona and active in the NPI registry since February 2007. The organization holds a CLIA Waiver certificate valid through September 30, 2027 and lists Katrina A Ong-veloso, Administrator, as its authorized official.

NPPES Registry Identity

NPI1619019049
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMIDWEST INTERNAL MEDICINE PLLC
Location Address1840 MESQUITE AVE STE BLake Havasu City, AZ 86403-5771
Mailing Address1840 Mesquite Ave Ste BLake Havasu City, AZ 86403-5771 · (928) 453-8500 · Fax (928) 453-3660
Phone(928) 453-8500
Fax(928) 453-3660
Organization SubpartNo
Authorized OfficialKatrina A Ong-velosoAdministrator · (928) 453-9593
Enumeration DateFebruary 13, 2007
Last NPPES UpdateMarch 7, 20254 updates tracked since enumeration
NPPES CertifiedMarch 7, 2025
✔ NPI 1619019049 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
Also ListedClinic/Center · Primary CareTaxonomy 261QP2300X
1840 MESQUITE AVE STE B, Lake Havasu City, AZ 86403
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health.Insurance ›

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D0967428

Midwest Internal Medicine · Lake Havasu City, AZ
Active · expires Sep 30, 2027
CLIA Number03D0967428
Laboratory TypePhysician Office
Certificate Effective DateOctober 1, 2025
Certificate Expiration DateSeptember 30, 2027
Laboratory DirectorAngelo M. Ong-Veloso
Laboratory Phone(928) 453-8500
Laboratory LocationMidwest Internal Medicine1840 Mesquite Ave Ste B, Lake Havasu City, AZ 86403
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RIVIERA PRIMARY CARE
Anesthesiology (Pain Medicine)
1840 MESQUITE AVE STE B
LAKE HAVASU CITY, AZ 86403
Mohave County (928) 846-7097
MARK B LIM MD
Student in an Organized Health Care Education/Training Program
1840 MESQUITE AVE STE B
LAKE HAVASU CITY, AZ 86403
Mohave County (928) 453-8500
SLEEP DISORDERS CENTER OF PRESCOTT VALLEY LLC
Specialist
1840 MESQUITE AVE STE B, LAKE HAVASU CITY
LAKE HAVASU CITY, AZ 86403
Mohave County (928) 453-9199
ANDRES ALVARADO M.D.
Anesthesiology
1840 MESQUITE AVE STE B
LAKE HAVASU CITY, AZ 86403
Mohave County (928) 846-7097
MRS. SANDRA LOUISE ULMER DNP, FNP-BC
Nurse Practitioner (Family)
1840 MESQUITE AVE STE B
LAKE HAVASU CITY, AZ 86403
Mohave County (928) 453-8500

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 Midwest Internal Medicine PLLC's NPI number?

The NPI number for Midwest Internal Medicine PLLC is 1619019049. It was assigned to this organization in the NPPES registry on February 13, 2007.

Where is Midwest Internal Medicine PLLC located?

Midwest Internal Medicine PLLC is located at 1840 Mesquite Ave Ste B, Lake Havasu City, AZ 86403. The listed phone number is (928) 453-8500.

What is Midwest Internal Medicine PLLC's specialty?

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

Does Midwest Internal Medicine PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D0967428) is associated with this NPI, valid through September 30, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Midwest Internal Medicine PLLC accept?

Health plans from Ambetter from Arizona Complete Health list Midwest Internal Medicine PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Midwest Internal Medicine PLLC was last updated on March 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.