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OLSEN CLINIC
NPI 1871896373
Clinic/Center - Primary Care in Lowell, AR

Active since December 06, 2010CLIA 04D1025987 · Microscopy
212 W MONROE AVE STE B, LOWELL, AR 72745(479) 770-4100(479) 770-0262 Get Directions Write a Review

NPPES record last updated: October 13, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Olsen Clinic NPPES

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

OLSEN CLINIC (NPI 1871896373) is a healthcare organization registered as a primary care in Lowell, Arkansas and active in the NPI registry since December 2010. The organization holds a CLIA Microscopy certificate valid through May 23, 2028 and lists Mark F Olsen, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1871896373
Entity TypeOrganization
Primary Taxonomy261QP2300X
Legal Business NameMARK F. OLSEN M.D., P.A.
Location Address212 W MONROE AVE STE BLowell, AR 72745-9451
Mailing Address439 E Redbud LnFayetteville, AR 72703-3959 · (479) 770-4100 · Fax (479) 770-0262
Phone(479) 770-4100
Fax(479) 770-0262
Organization SubpartNo
Authorized OfficialMark F OlsenOffice Manager · (479) 770-4100
Enumeration DateDecember 6, 2010
Last NPPES UpdateOctober 13, 2022
NPPES CertifiedOctober 13, 2022
✔ NPI 1871896373 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Primary CareAmbulatory Health Care Facilities
Taxonomy Code261QP2300X
License✔ Licensed in AR · C6864
Also ListedInternal MedicineTaxonomy 207R00000X
212 W MONROE AVE STE B, Lowell, AR 72745
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Other Names 1

Doing Business AsOlsen Clinic

Other Identifiers 1

Other5G789AR · Medicare Ptan

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olsen 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 Olsen Clinic, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mark Olsen, M.D.
Family Practice
NPI 1831108430
212 W MONROE AVE STE B
Lowell, AR 72745
(479) 770-4100
✔ PECOS0.1 mi

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) 04D1025987

Olsen Clinic Mark F Olsen, MD · Springdale, AR
Active · expires May 23, 2028
CLIA Number04D1025987
Laboratory TypePhysician Office
Certificate Effective DateMay 24, 2026
Certificate Expiration DateMay 23, 2028
Laboratory DirectorMark F. Olsen
Laboratory Phone(479) 770-4100
Laboratory LocationOlsen Clinic Mark F Olsen, MD5501 Willow Creek Dr Suite 104, Springdale, AR 72762
CLIA data matches this NPI record on: 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 Mark F. Olsen M.D., P.A.'s NPI number?

The NPI number for Mark F. Olsen M.D., P.A. is 1871896373. It was assigned to this organization in the NPPES registry on December 6, 2010. The provider is doing business as Olsen Clinic.

Where is Mark F. Olsen M.D., P.A. located?

Mark F. Olsen M.D., P.A. is located at 212 W Monroe Ave Ste B, Lowell, AR 72745. The listed phone number is (479) 770-4100.

What is Mark F. Olsen M.D., P.A.'s specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.

Is Mark F. Olsen M.D., P.A. enrolled in Medicare?

Yes. Mark F. Olsen M.D., P.A. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mark F. Olsen M.D., P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Mark F. Olsen M.D., P.A.. 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 Mark F. Olsen M.D., P.A. hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 04D1025987) is associated with this NPI, valid through May 23, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Mark F. Olsen M.D., P.A. was last updated on October 13, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.