Ies Obs Colorado PLLC
Organization Active NPI Emergency Medicine Physician · Denver, CO
NPI 1235988015 · NPPES record last updated Apr 28, 2026
Key facts
- NPI
- 1235988015
- Entity type
- Organization (NPI type 2)
- Primary specialty
- Emergency Medicine Physician 207P00000X
- Legal business name
- IES OBS COLORADO PLLC
- Practice address
- 1375 E 19TH Ave
Denver, CO 80218-1114 - Phone
- (469) 420-5544
- NPI assigned
- May 15, 2024
- Organization subpart
- No
Authorized official
- Name
- Nestor Zenarosa, MD
- Title
- Owner
- Phone
- (469) 420-5527
Practitioners 63
-
Peter A Alsharif, MD
-
David S Glaser, MD
-
Molly Jane Goloback, M.D.
-
Elizabeth G Hanson, M.D.
-
Kathryn McCabe, MD
-
Shiv Patel, MD
-
Edward T Tham, M.D.
-
Daniel Vincent Zeccola, M.D.
-
Jerald Moser, M.D.
-
Dakota T Zaharis, FNP-C
-
Lisa Conner, PA
-
Anna Higgins, PA
-
Benjamin Clark Murphy, M.D.
Medicare participation
- Medicare fee-for-service enrollment
- Enrolled in CO
Medicare enrollment records
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| O20240725000242 | CO | Part B Supplier - Clinic/Group Practice | 7214473388 |
Receives reassigned benefits from 62 practitioners Practice locations: Denver, CO |
National Provider Directory
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Emergency Medicine Physician |
207P00000X | Yes |
Addresses
Primary practice location
1375 E 19TH Ave
Denver, CO 80218-1114
Mailing address
PO Box 604
Indianapolis, IN 46206-0604
Phone (469) 923-2906
NPI Registry JSON
{
"created_epoch": "1715731200000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1777334400000",
"number": "1235988015",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 604",
"city": "INDIANAPOLIS",
"state": "IN",
"postal_code": "462060604",
"telephone_number": "469-923-2906"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1375 E 19TH AVE",
"city": "DENVER",
"state": "CO",
"postal_code": "802181114",
"telephone_number": "469-420-5544"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "IES OBS COLORADO PLLC",
"organizational_subpart": "NO",
"enumeration_date": "2024-05-15",
"last_updated": "2026-04-28",
"certification_date": "2026-04-28",
"status": "A",
"authorized_official_last_name": "ZENAROSA",
"authorized_official_first_name": "NESTOR",
"authorized_official_title_or_position": "OWNER",
"authorized_official_telephone_number": "469-420-5527",
"authorized_official_credential": "MD"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Emergency Medicine",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
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Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Apr 28, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.