Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. ALEXA MERMIGAS
NPI 1477124055
Nurse Anesthetist, Certified Registered in Pittsburgh, PA

Active since July 06, 2021Accepts Medicare Assignment
600 GRANT ST FL 58, PITTSBURGH, PA 15219(412) 951-0046 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 23, 2026, Aug 21, 2023, May 23, 2023 and 1 more (4 updates tracked since 2021).

About Ms. Alexa Mermigas NPPES

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

MS. ALEXA MERMIGAS (NPI 1477124055) is an individual nurse anesthetist, certified registered in Pittsburgh, Pennsylvania, licensed in Pennsylvania (RN708750) and active in the NPI registry since July 2021. She is affiliated with Magee Womens Hospital Of Upmc Health System and is a graduate of Other (2023).

NPPES Registry Identity

NPI1477124055
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameMS. ALEXA MERMIGAS
Location Address600 GRANT ST FL 58Pittsburgh, PA 15219-2739
Mailing Address2525 Riva Ridge CtWexford, PA 15090-7958
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateJuly 6, 2021
Last NPPES UpdateJuly 23, 20264 updates tracked since enumeration
NPPES CertifiedAugust 21, 2023
NPI 1477124055 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License Licensed in PA · RN708750
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
Also ListedRegistered NurseTaxonomy 163W00000X · License 708750 (PA)
600 GRANT ST FL 58, Pittsburgh, PA 15219

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

Ms. Alexa Mermigas 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 ID5496112591
PECOS Enrollment IDI20230605003403

Hospital Affiliations CMS Care Compare

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

Magee Womens Hospital Of Upmc Health System

Acute Care Hospitals · Pittsburgh, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number390114
Location300 Halket StreetPittsburgh, PA 15213 · Allegheny County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15219 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
$68.36 typical visit price
range $17.33 – $135.84
Typical copayment $17.09 (range $4.33 – $33.96)
Most-billed visit code 99213
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.

Nurse Anesthetist, Certified Registered
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Internal Medicine
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Pediatrics (Pediatric Cardiology)
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Physician Assistant
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Nurse Anesthetist, Certified Registered
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Nurse Anesthetist, Certified Registered
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Physical Medicine & Rehabilitation
600 GRANT ST FL 58
PITTSBURGH, PA 15219
Nurse Practitioner (Acute Care)
600 GRANT ST FL 58
PITTSBURGH, PA 15219

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 Alexa Mermigas's NPI number?

The NPI number for Alexa Mermigas is 1477124055. It was assigned to this individual provider in the NPPES registry on July 6, 2021.

Where is Alexa Mermigas located?

Alexa Mermigas practices at 600 Grant St Fl 58, Pittsburgh, PA 15219. The listed phone number is (412) 951-0046.

What is Alexa Mermigas's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Alexa Mermigas enrolled in Medicare?

Yes. Alexa Mermigas 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 Alexa Mermigas affiliated with any hospitals?

According to CMS data, Alexa Mermigas is affiliated with Magee Womens Hospital Of Upmc Health System.

When was this NPI record last updated?

The NPPES record for Alexa Mermigas was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.