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PORTERCARE ADVENTIST HEALTH SYSTEM
NPI 1679961569
Hospitalist in Louisville, CO

Active since December 31, 2014
100 HEALTH PARK DR, LOUISVILLE, CO 80027(303) 673-1000(303) 673-1204 Get Directions Write a Review

NPPES record last updated: August 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 12, 2026, Jul 24, 2020, Nov 22, 2019 and 1 more (4 updates tracked since 2016).

About Portercare Adventist Health System NPPES

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

PORTERCARE ADVENTIST HEALTH SYSTEM (NPI 1679961569), doing business as Aahg Hospitalists Aah, is a healthcare organization registered as a hospitalist in Louisville, Colorado and active in the NPI registry since December 2014. The organization lists Jason Tacha, Coo, as its authorized official.

NPPES Registry Identity

NPI1679961569
Entity TypeOrganization
Primary Taxonomy208M00000X
Legal Business NamePORTERCARE ADVENTIST HEALTH SYSTEM
Location Address100 HEALTH PARK DRLouisville, CO 80027-9583
Mailing AddressPo Box 713425Chicago, IL 60677-4325 · (800) 953-0104 · Fax (303) 765-6670
Phone(303) 673-1000
Fax(303) 673-1204
Organization SubpartNo
Authorized OfficialJason TachaCoo · (303) 304-7752
Enumeration DateDecember 31, 2014
Last NPPES UpdateAugust 12, 20264 updates tracked since enumeration
NPPES CertifiedAugust 12, 2026
✔ NPI 1679961569 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
100 HEALTH PARK DR, Louisville, CO 80027
Open in Google Maps ↗

Other Names 2

Doing Business AsAahg Hospitalists Aah
Doing Business AsAdventhealth Medical Group Hospitalists At Avista

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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company).Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Portercare Adventist Health System is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

733

Medicare enrollment records show 733 clinicians reassign Medicare billing to Portercare Adventist Health System, which bills Medicare for the services they deliver. Of these, 9 practice at this address and 66 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 45

Nurse Practitioner159
Family Practice83
Internal Medicine77
Obstetrics/Gynecology69
Hospitalist47
Orthopedic Surgery36
Gastroenterology25
Mental Health Counselor20
37 other specialties217

Nearest to this location (20)

See all 733
Derek Berg, DO
Internal Medicine
NPI 1194896969
100 HEALTH PARK DR
Louisville, CO 80027
(303) 643-1159
✔ PECOS✔ Accepts MedicareSame address
Jennifer Blair, M.D.
Family Practice
NPI 1053587741
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOS✔ Accepts MedicareSame address
Andrew Chernaik, MD
Internal Medicine
NPI 1306818620
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOSSame address
Cristina Demian, M.D.
Internal Medicine
NPI 1275777542
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOS✔ Accepts MedicareSame address
Stefan Pop, M.D
Hospitalist
NPI 1962645366
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOS✔ Accepts MedicareSame address
Elaine Rusin, M.D.
Family Practice
NPI 1306150370
100 HEALTH PARK DR
Louisville, CO 80027
(720) 330-3937
✔ PECOS✔ Accepts MedicareSame address
Lauren Shaw, M.D.
Internal Medicine
NPI 1043553753
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOS✔ Accepts MedicareSame address
Michelle Stoltz, MD
Obstetrics/Gynecology
NPI 1982699286
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1100
✔ PECOSSame address
Carolyn Windler, MD
Family Practice
NPI 1356927842
100 HEALTH PARK DR
Louisville, CO 80027
(303) 673-1000
✔ PECOS✔ Accepts MedicareSame address
Samantha Gerhardson, M.D.
Anesthesiology
NPI 1023540044
90 HEALTH PARK DR STE 100
Louisville, CO 80027
(303) 661-4100
✔ PECOS0.1 mi
Bailey Jones, CNM
Certified Nurse Midwife (CNM)
NPI 1730691676
90 HEALTH PARK DR STE 290
Louisville, CO 80027
(303) 439-8910
✔ PECOS0.1 mi
Brett Schultz, DO
Obstetrics/Gynecology
NPI 1922217884
90 HEALTH PARK DR STE 260
Louisville, CO 80027
(303) 649-3180
✔ PECOS✔ Accepts Medicare0.1 mi
Rachel Shannon, LCSW
Clinical Social Worker
NPI 1194146902
90 HEALTH PARK DR STE 130
Louisville, CO 80027
(303) 661-4100
✔ PECOS✔ Accepts Medicare0.1 mi
Scott Hallgren, D.O., F.A.C.P.
Gastroenterology
NPI 1205929841
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 269-2085
✔ PECOS✔ Accepts Medicare0.1 mi
Colin Leffert, DO
Internal Medicine
NPI 1881127140
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 269-2085
✔ PECOS✔ Accepts Medicare0.1 mi
Debra Lopez, RNFA
Nurse Practitioner
NPI 1891864781
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 269-2085
✔ PECOS✔ Accepts Medicare0.1 mi
Thomas Manchester, MD
General Surgery
NPI 1083889927
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 734-2023
✔ PECOS✔ Accepts Medicare0.1 mi
Daniel Ocel, M.D.
Orthopedic Surgery
NPI 1649217324
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 661-4153
✔ PECOS✔ Accepts Medicare0.1 mi
Elizabeth Lassen, PSYD
Clinical Psychologist
NPI 1457684938
80 HEALTH PARK DR STE 270
Louisville, CO 80027
(303) 661-4100
✔ PECOS✔ Accepts Medicare0.1 mi
Christopher Talbot, DO, MS
Neurosurgery
NPI 1558899468
90 HEALTH PARK DR STE 350
Louisville, CO 80027
(303) 925-5068
✔ PECOS✔ Accepts Medicare0.1 mi
See all 733 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Portercare Adventist Health System's NPI number?

The NPI number for Portercare Adventist Health System is 1679961569. It was assigned to this organization in the NPPES registry on December 31, 2014. The provider is doing business as Aahg Hospitalists Aah and AdventHealth Medical Group Hospitalists at Avista.

Where is Portercare Adventist Health System located?

Portercare Adventist Health System is located at 100 Health Park Dr, Louisville, CO 80027. The listed phone number is (303) 673-1000.

What is Portercare Adventist Health System's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Portercare Adventist Health System enrolled in Medicare?

Yes. Portercare Adventist Health System is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Portercare Adventist Health System?

According to the CMS Revalidation Reassignment List (October 2026 release), 733 clinicians in 45 Medicare specialties reassign their Medicare billing to Portercare Adventist Health System. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (159), Family Practice (83) and Internal Medicine (77). Of these, 9 practice at this address and 66 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Portercare Adventist Health System accept?

Health plans from Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list Portercare Adventist Health System as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Portercare Adventist Health System was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.