MARIA HAYS AA - NPI 1225974579 - Anesthesiologist Assistant in Greenwood Village, CO

Q: What is Maria Hays's NPI number?

The NPI number for Maria Hays is 1225974579. It was assigned to this individual provider in the NPPES registry on April 28, 2026.

Q: What is Maria Hays's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Q: When was this NPI record last updated?

The NPPES record for Maria Hays was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 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.

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About Maria Hays Aa NPPES

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

MARIA HAYS AA (NPI 1225974579) is an individual anesthesiologist assistant in Greenwood Village, Colorado, licensed in Colorado (ANT.0000342) and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1225974579

Entity TypeIndividualFemale

Primary Taxonomy367H00000X

Provider Legal NameMARIA HAYSCredential: AA

Location Address8000 E MAPLEWOOD AVE STE 120Greenwood Village, CO 80111-4766

Mailing AddressPo Box 840862Dallas, TX 75284-0862 · (303) 377-7638 · Fax (303) 780-0787

Phone(303) 438-3999

Fax(720) 439-9500

Sole ProprietorNo

Enumeration DateApril 28, 2026

Last NPPES UpdateJune 10, 2026

NPPES CertifiedJune 10, 2026

✔ NPI 1225974579 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367H00000X

License✔ Licensed in CO · ANT.0000342

Definition

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

8000 E MAPLEWOOD AVE STE 120, Greenwood Village, CO 80111

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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.

JENNIFER K KROGH CRNA

Nurse Anesthetist, Certified Registered