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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK AHLENIUS MD
NPI 1396278891
Pediatrics in Joint Base Lewis Mcchord, WA

Active since April 11, 2017PECOS Enrolled
9040 A JACKSON AVE MADIGAN ARMY MEDICAL CENTER, JOINT BASE LEWIS MCCHORD, WA 98431(253) 968-1110 Get Directions Write a Review

NPPES record last updated: August 18, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 18, 2026, Jan 24, 2022, Mar 5, 2019 and 2 more (5 updates tracked since 2017).

About Mark Ahlenius Md NPPES

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

MARK AHLENIUS MD (NPI 1396278891) is an individual pediatrics provider in Joint Base Lewis Mcchord, Washington, licensed in Virginia (0101266050) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396278891
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameMARK AHLENIUSCredential: MD
Location Address9040 A JACKSON AVE MADIGAN ARMY MEDICAL CENTERJoint Base Lewis Mcchord, WA 98431-4504
Mailing Address9040-a Jackson Ave, Madigan HospitalFort Lewis, WA 98431
Phone(253) 968-1110
Sole ProprietorNo
Enumeration DateApril 11, 2017
Last NPPES UpdateAugust 18, 20265 updates tracked since enumeration
NPPES CertifiedAugust 18, 2026
✔ NPI 1396278891 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in VA · 0101266050
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedPediatrics · Adolescent MedicineTaxonomy 2080A0000X · License 838 (TX)
9040 A JACKSON AVE MADIGAN ARMY MEDICAL CENTER, Joint Base Lewis Mcchord, WA 98431
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Ahlenius Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98431 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$88.29 typical visit price
range $57.27 – $172.80
Typical copayment $22.07 (range $14.31 – $43.20)
Most-billed visit code 99203
Established Patient
$100.78 typical visit price
range $18.56 – $141.11
Typical copayment $25.19 (range $4.64 – $35.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Ahlenius's NPI number?

The NPI number for Mark Ahlenius is 1396278891. It was assigned to this individual provider in the NPPES registry on April 11, 2017.

Where is Mark Ahlenius located?

Mark Ahlenius practices at 9040 A Jackson Ave Madigan Army Medical Center, Joint Base Lewis Mcchord, WA 98431. The listed phone number is (253) 968-1110.

What is Mark Ahlenius's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mark Ahlenius enrolled in Medicare?

Yes. Mark Ahlenius is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Ahlenius was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.