IES OBS COLORADO PLLC
NPI 1235988015
Emergency Medicine in Denver, CO

Q: What is Ies Obs Colorado PLLC's NPI number?

The NPI number for Ies Obs Colorado PLLC is 1235988015. It was assigned to this organization in the NPPES registry on May 15, 2024.

Q: What is Ies Obs Colorado PLLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Active since May 15, 2024

1375 E 19TH AVE, DENVER, CO 80218(469) 420-5544 Get Directions Write a Review

NPPES record last updated: April 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 28, 2026, Jun 13, 2024, May 15, 2024 (3 updates tracked since 2024).

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About Ies Obs Colorado Pllc NPPES

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

IES OBS COLORADO PLLC (NPI 1235988015) is a healthcare organization registered as an emergency medicine in Denver, Colorado and active in the NPI registry since May 2024. The organization lists Nestor Zenarosa, Owner, as its authorized official.

NPPES Registry Identity

NPI1235988015

Entity TypeOrganization

Primary Taxonomy207P00000X

Legal Business NameIES OBS COLORADO PLLC

Location Address1375 E 19TH AVEDenver, CO 80218-1114

Mailing AddressPo Box 604Indianapolis, IN 46206-0604 · (469) 923-2906

Phone(469) 420-5544

Organization SubpartNo

Authorized OfficialNestor ZenarosaOwner · (469) 420-5527

Enumeration DateMay 15, 2024

Last NPPES UpdateApril 28, 20263 updates tracked since enumeration

NPPES CertifiedApril 28, 2026

✔ NPI 1235988015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

1375 E 19TH AVE, Denver, CO 80218

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ies Obs Colorado Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 52 clinicians reassign Medicare billing to Ies Obs Colorado PLLC, which bills Medicare for the services they deliver. Of these, 15 practice at this address and 31 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 2

Emergency Medicine49

Nurse Practitioner3

Nearest to this location (20)

See all 52

Ari Melmed

Emergency Medicine

NPI 1588791552