STEVEN C HARNACK MD
NPI 1982622387
Internal Medicine in Denver, CO
About Steven C Harnack Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN C HARNACK MD (NPI 1982622387) is an individual internal medicine provider in Denver, Colorado, licensed in Illinois (036-078536) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Newport, and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (1990).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steven C Harnack Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Steven Harnack reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80205
- Reassigned Medicare billing, Colorado, Minnesota and Ohio enrollments
- Medicare enrollment name: Cirrusmd Medical Group Of Delaware PA
- 17 clinicians in this Medicare group
Dallas, TX 75219
- Reassigned Medicare billing, Texas enrollment
- 55 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80205
DENVER, CO 80205
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 Steven Harnack's NPI number?
The NPI number for Steven Harnack is 1982622387. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Steven Harnack located?
Steven Harnack practices at 3000 Lawrence St # 101, Denver, CO 80205. The listed phone number is (720) 689-5269.
What is Steven Harnack's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Steven Harnack enrolled in Medicare?
Yes. Steven Harnack is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Steven Harnack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Harnack reassigns Medicare benefits to 2 organizations: Cirrusmd Medical Group Of Delaware, P.A. (Denver, CO) and Cmdpn Medical Group Of Texas, P.A. (Dallas, TX). Each 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 Steven Harnack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Steven Harnack was last updated on September 2, 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.
# Steven C Harnack, MD · NPI 1982622387
Internal Medicine physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1982622387 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036-078536 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 3000 LAWRENCE ST # 101, Denver, CO 80205-3422
- **Phone:** (720) 689-5269
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cirrusmd Medical Group Of Delaware, P.A. (NPI 1922664200, Denver, CO); Cmdpn Medical Group Of Texas, P.A. (NPI 1174082150, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Illinois College Of Med, class of 1990
## Record status
- **NPPES last updated:** September 2, 2026
- **Other identifiers:** Medicaid 036078536 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1982622387) · Data from the CMS NPPES public registry.