1. Home
  2. Directory
  3. Colorado
  4. Littleton
  5. Internal Medicine
  6. NPI Profile

KARL GREGORY SHAVER
NPI 1891257804
Internal Medicine - Cardiovascular Disease in Littleton, CO

Active since April 01, 2019PECOS Enrolled
95.31/100
CMS Quality Rating
1000 SOUTHPARK DR, LITTLETON, CO 80120(303) 744-1065(303) 733-1699 Get Directions Write a Review

NPPES record last updated: August 24, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 24, 2026, Apr 1, 2019 (2 updates tracked since 2019).

About Karl Gregory Shaver NPPES

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

KARL GREGORY SHAVER (NPI 1891257804) is an individual cardiovascular disease provider in Littleton, Colorado, licensed in Colorado (DR.76823) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Columbus.

NPPES Registry Identity

NPI1891257804
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameKARL GREGORY SHAVER
Location Address1000 SOUTHPARK DRLittleton, CO 80120-5654
Mailing Address1000 Southpark DrLittleton, CO 80120-5654 · (303) 744-1065 · Fax (303) 733-1699
Phone(303) 744-1065
Fax(303) 733-1699
Sole ProprietorNo
Enumeration DateApril 1, 2019
Last NPPES UpdateAugust 24, 20262 updates tracked since enumeration
NPPES CertifiedAugust 24, 2026
✔ NPI 1891257804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CO · DR.76823
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1000 SOUTHPARK DR, Littleton, CO 80120
Open in Google Maps ↗

Secondary Practice Location 1

Location 1The Ohio State University Wexner Medical Center, 395 W 12th Avenue, Third FloorColumbus, OH 43210 · Phone (614) 293-3989 · Fax (614) 293-9789

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karl Gregory Shaver is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Karl Shaver reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Portercare Adventist Health System
Same address
Rehabilitation, Cardiac Facilities
1000 SOUTHPARK DR
Littleton, CO 80120
  • Reassigned Medicare billing, Colorado enrollment
  • 733 clinicians in this Medicare group
NPI 1750832382 (303) 744-1065

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 80120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$72.20 typical visit price
range $18.88 – $142.79
Typical copayment $18.05 (range $4.72 – $35.69)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.31/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality76.58
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$907.03 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

MRS. KAREN ELAINE KAMERZELL FNP-BC
Nurse Practitioner (Family)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
SAMANTHA JO PUSHCHAK PA-C
Physician Assistant
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
JEHU SAM MATHEW M.D.
Internal Medicine (Clinical Cardiac Electrophysiology)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
DR. PAWEL DOLOTO M.D.
Internal Medicine (Cardiovascular Disease)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
LAUREN MICHELE MURRAY RD
Dietitian, Registered
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
DR. ROGER S DAMLE MD
Internal Medicine (Clinical Cardiac Electrophysiology)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
DR. WILLIAM C CHOE MD
Internal Medicine (Clinical Cardiac Electrophysiology)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065
AMY MARION CARDONA NP
Nurse Practitioner (Acute Care)
1000 SOUTHPARK DR
LITTLETON, CO 80120
Arapahoe County (303) 744-1065

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 Karl Shaver's NPI number?

The NPI number for Karl Shaver is 1891257804. It was assigned to this individual provider in the NPPES registry on April 1, 2019.

Where is Karl Shaver located?

Karl Shaver practices at 1000 Southpark Dr, Littleton, CO 80120. The listed phone number is (303) 744-1065.

What is Karl Shaver's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Karl Shaver enrolled in Medicare?

Yes. Karl Shaver is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karl Shaver's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karl Shaver reassigns Medicare benefits to Portercare Adventist Health System (Littleton, CO). The 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 Karl Shaver's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karl Shaver accept?

Health plans from Select Health list Karl Shaver 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 Karl Shaver was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 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.