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TESSA RAE BARCLAY MD
NPI 1699237651
Pediatrics - Pediatric Infectious Diseases in Pittsburgh, PA

Active since April 01, 2019PECOS Enrolled
3601 5TH AVE BLDG SUITE700, PITTSBURGH, PA 15213(412) 647-7228 Get Directions Write a Review

NPPES record last updated: February 2, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 2, 2026, Aug 14, 2025, Apr 1, 2019 (3 updates tracked since 2019).

About Tessa Rae Barclay Md NPPES

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

TESSA RAE BARCLAY MD (NPI 1699237651) is an individual pediatric infectious diseases provider in Pittsburgh, Pennsylvania, licensed in Pennsylvania (MD489660) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Vermont College Of Medicine (2019).

NPPES Registry Identity

NPI1699237651
Entity TypeIndividualFemale
Primary Taxonomy2080P0208X
Provider Legal NameTESSA RAE BARCLAYCredential: MD
Location Address3601 5TH AVE BLDG SUITE700Pittsburgh, PA 15213-3403
Mailing Address2 Hot Metal St Bldg 3Pittsburgh, PA 15203-2348
Phone(412) 647-7228
Sole ProprietorNo
Medical School CMSUniversity Of Vermont College Of MedicineGraduated 2019
Enumeration DateApril 1, 2019
Last NPPES UpdateFebruary 2, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 2, 2026
✔ NPI 1699237651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
Licenses✔ Licensed in PA · MD489660✔ Licensed in AZ · 77365
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
3601 5TH AVE BLDG SUITE700, Pittsburgh, PA 15213
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11400 S Dobson RdMesa, AZ 85202-4707 · Phone (480) 412-3000
Location 25555 W Thunderbird RdGlendale, AZ 85306-4622 · Phone (602) 865-5561

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, HealthPartners, Oscar Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tessa Rae Barclay Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4486155058
PECOS Enrollment IDI20260218001775
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 Reassignments

3

Medicare enrollment records show Tessa Barclay reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Pittsburgh Physicians
0.1 mi
Internal Medicine
3500 5TH AVE, 4TH FLOOR
Pittsburgh, PA 15213
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 7,114 clinicians in this Medicare group
NPI 1548433527 (412) 682-2434
Gillette Children's Specialty Healthcare
737 mi
Multi-Specialty
200 EAST UNIVERSITY AVE
St. Paul, MN 55101
  • Reassigned Medicare billing, Minnesota enrollment
  • Medicare enrollment name: Gillette Childrens Specialty Healthcare
  • 304 clinicians in this Medicare group
NPI 1225119175 (651) 291-2848
Banner Physician Super Specialists Arizona LLC
1,811 mi
Multi-Specialty
37100 N GANTZEL RD STE 214
San Tan Valley, AZ 85140
  • Reassigned Medicare billing, Arizona enrollment
  • 188 clinicians in this Medicare group
NPI 1396014403 (480) 412-9400

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

Other Providers at the Same Location NPPES 7

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

ALEX MARSHAL TRZEBUCKI MD
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 648-6273
BOOTH WAINSCOAT DO
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 647-7228
CHRISTIAN OSCAR PEREZ
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 647-7228
COLIN TKATCH MD
Internal Medicine
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 647-7228
AKASH GUPTA MD
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 647-7228
MS. KATHLEEN MARIE TOMPKINS M.D.
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (919) 216-0227
NICOLE WHITE
Internal Medicine (Infectious Disease)
3601 5TH AVE BLDG SUITE700
PITTSBURGH, PA 15213
Allegheny County (412) 647-7228

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 Tessa Barclay's NPI number?

The NPI number for Tessa Barclay is 1699237651. It was assigned to this individual provider in the NPPES registry on April 1, 2019.

Where is Tessa Barclay located?

Tessa Barclay practices at 3601 5th Ave Bldg Suite700, Pittsburgh, PA 15213. The listed phone number is (412) 647-7228.

What is Tessa Barclay's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Tessa Barclay enrolled in Medicare?

Yes. Tessa Barclay is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tessa Barclay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tessa Barclay reassigns Medicare benefits to 3 organizations: University Of Pittsburgh Physicians (Pittsburgh, PA), Gillette Children's Specialty Healthcare (St. Paul, MN) and Banner Physician Super Specialists Arizona LLC (San Tan Valley, AZ). Each 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 Tessa Barclay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tessa Barclay accept?

Health plans from Cigna Healthcare, HealthPartners and Oscar Health Plan, Inc. list Tessa Barclay as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tessa Barclay was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.