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MASON ROBERT MARSHALL DO
NPI 1609401736
Pathology - Anatomic Pathology & Clinical Pathology in Pittsburgh, PA

Active since March 09, 2020PECOS EnrolledAccepts Medicare Assignment
3550 TERRACE STREET PATHOLOGY EDUCATION OFFICE A711, PITTSBURGH, PA 15270(412) 802-6014 Get Directions Write a Review

NPPES record last updated: February 25, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: May 14, 2021, Mar 9, 2020 (2 updates tracked since 2020).

About Mason Robert Marshall Do NPPES

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

MASON ROBERT MARSHALL DO (NPI 1609401736) is an individual anatomic pathology & clinical pathology provider in Pittsburgh, Pennsylvania, licensed in Wisconsin (82022-21) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital - Madison, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1609401736
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameMASON ROBERT MARSHALLCredential: DO
Location Address3550 TERRACE STREET PATHOLOGY EDUCATION OFFICE A711Pittsburgh, PA 15270-4494
Mailing Address3600 Forbes Avenue, Forbes Tower Plaza Level Suite 140Pittsburgh, PA 15213
Phone(412) 802-6014
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMarch 9, 2020
Last NPPES UpdateFebruary 25, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 25, 2026
✔ NPI 1609401736 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in WI · 82022-21
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
3550 TERRACE STREET PATHOLOGY EDUCATION OFFICE A711, Pittsburgh, PA 15270
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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 Robert Marshall Do 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 ID1850793167
PECOS Enrollment IDI20260323003523
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.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm Health St Mary's Hospital - Madison

Acute Care Hospitals · Madison, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520083
Location700 South Park StMadison, WI 53715 · Dane County
Emergency services Birthing friendly

Ssm Health St Mary's Hospital - Janesville

Acute Care Hospitals · Janesville, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number520208
Location3400 East Racine StreetJanesville, WI 53546 · Rock County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15270 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
$126.34 typical visit price
range $54.64 – $166.87
Typical copayment $31.58 (range $13.66 – $41.71)
Most-billed visit code 99204
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
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 Mason Marshall's NPI number?

The NPI number for Mason Marshall is 1609401736. It was assigned to this individual provider in the NPPES registry on March 9, 2020.

Where is Mason Marshall located?

Mason Marshall practices at 3550 Terrace Street Pathology Education Office A711, Pittsburgh, PA 15270. The listed phone number is (412) 802-6014.

What is Mason Marshall's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Mason Marshall enrolled in Medicare?

Yes. Mason Marshall 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.

Is Mason Marshall affiliated with any hospitals?

According to CMS data, Mason Marshall is affiliated with Ssm Health St Mary's Hospital - Madison and Ssm Health St Mary's Hospital - Janesville.

When was this NPI record last updated?

The NPPES record for Mason Marshall was last updated on February 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.