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MASON C PAAS MD
NPI 1386215986
Internal Medicine in Portland, OR

Active since July 05, 2021PECOS EnrolledAccepts Medicare Assignment
4805 NE GLISAN ST STE BG12, PORTLAND, OR 97213(503) 215-2392 Get Directions Write a Review

NPPES record last updated: December 2, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 2, 2025, Jul 5, 2021 (2 updates tracked since 2021).

About Mason C Paas Md NPPES

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

MASON C PAAS MD (NPI 1386215986) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (MD225581) and active in the NPI registry since July 2021. He is enrolled in Medicare PECOS and is a graduate of University Of Kentucky College Of Medicine (2022).

NPPES Registry Identity

NPI1386215986
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMASON C PAASCredential: MD
Location Address4805 NE GLISAN ST STE BG12Portland, OR 97213-2933
Mailing Address4805 Ne Glisan St Ste Bg12Portland, OR 97213-2933
Phone(503) 215-2392
Sole ProprietorNo
Medical School CMSUniversity Of Kentucky College Of MedicineGraduated 2022
Enumeration DateJuly 5, 2021
Last NPPES UpdateDecember 2, 20252 updates tracked since enumeration
NPPES CertifiedDecember 2, 2025
✔ NPI 1386215986 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OR · MD225581
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.
4805 NE GLISAN ST STE BG12, Portland, OR 97213
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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 and accepts Medicare assignment

Mason C Paas Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID749664142
PECOS Enrollment IDI20251119004164
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 97213 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
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
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.

Other Providers at the Same Location NPPES 4

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

SOPHIA IRENE LEE MD
Internal Medicine
4805 NE GLISAN ST STE BG12
PORTLAND, OR 97213
Multnomah County (503) 215-2392
MR. TRAVIS VANDINH DNP , AGACNP
Nurse Practitioner (Acute Care)
4805 NE GLISAN ST STE BG12
PORTLAND, OR 97213
Multnomah County (503) 215-2392
MAUREEN P BRUNS MD
Internal Medicine (Geriatric Medicine)
4805 NE GLISAN ST STE BG12
PORTLAND, OR 97213
Multnomah County (503) 215-2392
SARAH M CARTER MD
Internal Medicine
4805 NE GLISAN ST STE BG12
PORTLAND, OR 97213
Multnomah County (503) 215-2392

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 Mason Paas's NPI number?

The NPI number for Mason Paas is 1386215986. It was assigned to this individual provider in the NPPES registry on July 5, 2021.

Where is Mason Paas located?

Mason Paas practices at 4805 NE Glisan St Ste Bg12, Portland, OR 97213. The listed phone number is (503) 215-2392.

What is Mason Paas's specialty?

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

Is Mason Paas enrolled in Medicare?

Yes. Mason Paas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Mason Paas was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.