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MARISSA BYLER
NPI 1487542817
Nurse Practitioner - Family in Pittsburgh, PA

Active since June 25, 2025PECOS EnrolledAccepts Medicare Assignment
3333 5TH AVE, PITTSBURGH, PA 15213(412) 578-6000 Get Directions Write a Review

NPPES record last updated: June 25, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Marissa Byler NPPES

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

MARISSA BYLER (NPI 1487542817) is an individual family provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (SP032593) and active in the NPI registry since June 2025. The provider is enrolled in Medicare PECOS, is affiliated with Upmc Mercy, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1487542817
Entity TypeIndividual
Primary Taxonomy363LF0000X
Provider Legal NameMARISSA BYLER
Location Address3333 5TH AVEPittsburgh, PA 15213-3165
Mailing Address3333 5th AvePittsburgh, PA 15213-3165
Phone(412) 578-6000
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateJune 25, 2025
NPPES CertifiedJune 25, 2025
✔ NPI 1487542817 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in PA · SP032593
3333 5TH AVE, Pittsburgh, PA 15213
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marissa Byler 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 ID1355806001
PECOS Enrollment IDI20260722004643
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.

Medicare Billing Reassignment

Medicare enrollment records show Marissa Byler reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Pittsburgh Physicians
0.2 mi
Obstetrics & Gynecology
300 HALKET ST
Pittsburgh, PA 15213
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 7,114 clinicians in this Medicare group
NPI 1134187834 (412) 647-0943

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

Hospital Affiliations CMS Care Compare

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

Upmc Mercy

Acute Care Hospitals · Pittsburgh, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390028
Location1400 Locust StreetPittsburgh, PA 15219 · Allegheny County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15213 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
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.

Other Providers at the Same Location NPPES 20

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

TYLER BURNELL
Psychologist
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
YASMINA SOMMERS
Student in an Organized Health Care Education/Training Program
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
JULIA EMILY ROBB RN
Student in an Organized Health Care Education/Training Program
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
MORGAN SHEA ROSSMAN
Student in an Organized Health Care Education/Training Program
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
BRITTANY BEEMAN
Student in an Organized Health Care Education/Training Program
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
MS. SARAH ASHLEY FINNEY
Nurse Practitioner (Family)
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
CARLY LAZAR
Psychologist
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000
ALYSSA HOFFMAN CRNP
Student in an Organized Health Care Education/Training Program
3333 5TH AVE
PITTSBURGH, PA 15213
Allegheny County (412) 578-6000

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 Marissa Byler's NPI number?

The NPI number for Marissa Byler is 1487542817. It was assigned to this individual provider in the NPPES registry on June 25, 2025.

Where is Marissa Byler located?

Marissa Byler practices at 3333 5th Ave, Pittsburgh, PA 15213. The listed phone number is (412) 578-6000.

What is Marissa Byler's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Marissa Byler enrolled in Medicare?

Yes. Marissa Byler 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.

Which organization bills Medicare for Marissa Byler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Byler reassigns Medicare benefits to University Of Pittsburgh Physicians (Pittsburgh, PA). The 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 Marissa Byler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Marissa Byler affiliated with any hospitals?

According to CMS data, Marissa Byler is affiliated with Upmc Mercy.

When was this NPI record last updated?

The NPPES record for Marissa Byler was last updated on June 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.