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DR MIKE'S WALK IN CLINIC
NPI 1295745743
Family Medicine in Barstow, CA

Active since August 08, 2006CLIA 05D0967739 · Microscopy
716 E MAIN ST, BARSTOW, CA 92311(760) 256-6426 Get Directions Write a Review

NPPES record last updated: March 19, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr Mike's Walk In Clinic NPPES

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

DR MIKE'S WALK IN CLINIC (NPI 1295745743) is a healthcare organization registered as a family medicine in Barstow, California and active in the NPI registry since August 2006. The organization holds a CLIA Microscopy certificate valid through November 21, 2027 and lists Marco A Alfonzo, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1295745743
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameMAITHRI N. WEERASINGHE MD INC
Location Address716 E MAIN STBarstow, CA 92311-2354
Mailing AddressPo Box 487Barstow, CA 92312-0487 · (760) 953-8059
Phone(760) 256-6426
Organization SubpartNo
Authorized OfficialMarco A AlfonzoOffice Manager · (760) 953-8059
Enumeration DateAugust 8, 2006
Last NPPES UpdateMarch 19, 2015
✔ NPI 1295745743 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A48518
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
716 E MAIN ST, Barstow, CA 92311
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Other Names 1

Doing Business AsDr Mike's Walk In Clinic

Other Identifiers 1

Medicare ID-Type UnspecifiedZZZ01834ZCA · Provider Number

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr Mike's Walk In Clinic is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Dr Mike's Walk In Clinic, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mikel Alwis, M.D.
Family Practice
NPI 1790705671
716 E MAIN ST
Barstow, CA 92311
(760) 256-6426
✔ PECOSSame address

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

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 for Provider-Performed Microscopy Procedures (PPMP) 05D0967739

Maithri N Weerasinghe MD Inc · Barstow, CA
Active · expires Nov 21, 2027
CLIA Number05D0967739
Laboratory TypePhysician Office
Certificate Effective DateNovember 22, 2025
Certificate Expiration DateNovember 21, 2027
Laboratory DirectorMikel A. Alwis MD
Laboratory Phone(760) 256-6426
Laboratory LocationMaithri N Weerasinghe MD Inc716 East Main Street, Barstow, CA 92311
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Maithri N. Weerasinghe MD Inc's NPI number?

The NPI number for Maithri N. Weerasinghe MD Inc is 1295745743. It was assigned to this organization in the NPPES registry on August 8, 2006. The provider is doing business as Dr Mike's Walk In Clinic.

Where is Maithri N. Weerasinghe MD Inc located?

Maithri N. Weerasinghe MD Inc is located at 716 E Main St, Barstow, CA 92311. The listed phone number is (760) 256-6426.

What is Maithri N. Weerasinghe MD Inc's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Maithri N. Weerasinghe MD Inc enrolled in Medicare?

Yes. Maithri N. Weerasinghe MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Maithri N. Weerasinghe MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Maithri N. Weerasinghe MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Maithri N. Weerasinghe MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0967739) is associated with this NPI, valid through November 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Maithri N. Weerasinghe MD Inc was last updated on March 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.