GREGORY OLIVIER MATHELIER (MD) – Emergency Medicine Physician, NPI 1386227577

GREGORY OLIVIER MATHELIER (MD) is a healthcare provider. based in Pittsburgh, Pennsylvania. specializing in EMERGENCY MEDICINE. They hold the professional credentials MD. They hold a License No. D98944 (MD). The NPI Number for GREGORY OLIVIER MATHELIER (MD) is 1386227577

Main info

Male
Sole Proprietor
5 Years Of Experience
Accepts Medicare Assignment
Name
GREGORY OLIVIER MATHELIER (MD)
NPI
1386227577
Phone
Not provided
Address
3600 FORBES AVE STE 140
Enumeration Date
4 May 2021
Last Update Date
30 September 2024

Doctor Profile

Medical School Name
HOWARD UNIVERSITY COLLEGE OF MEDICINE
Secondary Phone
8405663300
Graduation Year
2021 (5 years ago)
PAC ID
6103222690
Group Practice PAC ID
3577975408
Professional Enrollment ID
I20241112002337
Address ID
MD217014506FR400XXSTXX402

Contacts

Secure Messaging
gregory.o.mathelier@upmcdirect.com
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience39
Completeness85
Years active:5State licenses:1Other namesUpdated within 12 months

3,391 EMERGENCY MEDICINE in PA

Provider Addresses for GREGORY OLIVIER MATHELIER (MD)

  • 3600 FORBES AVE STE 140

    PITTSBURGH, PA 152133410

    Phone:

    Type: Mailing

  • 200 LOTHROP ST

    PITTSBURGH, PA 152132536

    Phone: (412) 647-3333

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2024-11-12

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20240313002745IEmergency MedicinePATBD
I20241112002337IEmergency MedicineMDTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 15213)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3577975408View full group profile
NameSpecialtyState
Emergency MedicinePA
Emergency MedicineMD
Emergency MedicineMI
Emergency MedicineNJ
Physician AssistantAK
Emergency MedicinePA
Emergency MedicineCA
Internal MedicineMA
Physician AssistantMD

Reviews

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Frequently asked questions

What unique ID ties claims to GREGORY OLIVIER MATHELIER (MD)?
NPI 1386227577 is assigned to GREGORY OLIVIER MATHELIER (MD) under the national enumeration system.
Is GREGORY OLIVIER MATHELIER (MD) currently active in the NPI registry?
CMS-published data lists GREGORY OLIVIER MATHELIER (MD) as an active registrant.
What does GREGORY OLIVIER MATHELIER (MD) treat or focus on?
Patients typically see GREGORY OLIVIER MATHELIER (MD) under the specialty Emergency Medicine Physician. Clinical services aligned with this taxonomy classification.
What location shows for GREGORY OLIVIER MATHELIER (MD)?
We surface Pittsburgh, Pennsylvania for GREGORY OLIVIER MATHELIER (MD) based on available NPPES addresses.
What if Pittsburgh, Pennsylvania seems incomplete?
Street-level detail can be omitted — open the full address list for this NPI.

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