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WARREN CHARLES STOPAK
NPI 1134700016
Medical Genetics - Medical Biochemical Genetics in Aurora, CO

Active since April 21, 2021PECOS Enrolled
13120 E 19TH AVE, AURORA, CO 80045(301) 801-0813 Get Directions Write a Review

NPPES record last updated: June 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 2, 2026, Jun 30, 2024, Apr 21, 2021 (3 updates tracked since 2021).

About Warren Charles Stopak NPPES

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

WARREN CHARLES STOPAK (NPI 1134700016) is an individual medical biochemical genetics provider in Aurora, Colorado and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS and is a graduate of Touro Un College Of Osteopathic Medicine, Vallejo (2021).

NPPES Registry Identity

NPI1134700016
Entity TypeIndividualMale
Primary Taxonomy207SG0207X
Provider Legal NameWARREN CHARLES STOPAK
Location Address13120 E 19TH AVEAurora, CO 80045-2567
Mailing Address2230 Holly StDenver, CO 80207-3843 · (301) 801-0813
Phone(301) 801-0813
Sole ProprietorNo
Medical School CMSTouro Un College Of Osteopathic Medicine, VallejoGraduated 2021
Enumeration DateApril 21, 2021
Last NPPES UpdateJune 15, 20263 updates tracked since enumeration
NPPES CertifiedJune 15, 2026
✔ NPI 1134700016 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMedical Genetics · Medical Biochemical GeneticsAllopathic & Osteopathic Physicians
Taxonomy Code207SG0207X
Definition
A medical biochemical geneticist specializes in the diagnosis, evaluation, prevention, and treatment of patients with biochemical genetic disorders, defined as inborn errors of metabolism at any age of onset. Training does not include those skills and knowledge necessary to direct a clinical laboratory.
13120 E 19TH AVE, Aurora, CO 80045
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Warren Charles Stopak is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7618377417
PECOS Enrollment IDI20250605003652
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 Warren Stopak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sequence MD
7.1 mi
Clinical Genetics (M.D.)
1601 E 19TH AVE STE 4100
Denver, CO 80218
  • Reassigned Medicare billing, Colorado enrollment
  • 3 clinicians in this Medicare group
NPI 1487306692 (303) 832-7109

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 80045 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
$174.82 typical visit price
range $58.06 – $174.82
Typical copayment $43.70 (range $14.51 – $43.70)
Most-billed visit code 99205
Established Patient
$142.79 typical visit price
range $18.88 – $142.79
Typical copayment $35.69 (range $4.72 – $35.69)
Most-billed visit code 99215
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DEBORAH CANNON HOLLOWAY RN, BSN
Registered Nurse (Pediatrics)
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-1812
MRS. MICHELLE MARIE PAYMENT
Registered Nurse (Pediatrics)
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-1812
REGENTS OF THE UNIVERSITY OF COLORADO
Nurse Practitioner
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-1812
MRS. CHANTEL MARIE SCHONEBOOM CNM
Advanced Practice Midwife
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-1362
JULIE KAY WILLIAMS EARNEST RN, MSN, CPNP
Registered Nurse (Pediatrics)
13120 E 19TH AVE, C288-5
AURORA, CO 80045
Adams County (303) 724-1362
TERESA CHARLOTTE CONNOLLY RN, CNS
Registered Nurse (Neuroscience)
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-2219
ERIN E KISSELL
Student in an Organized Health Care Education/Training Program
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-1812
TAMMY SPENCER RN, ACNS-BC, CCNS
Registered Nurse (Critical Care Medicine)
13120 E 19TH AVE
AURORA, CO 80045
Adams County (303) 724-8529

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 Warren Stopak's NPI number?

The NPI number for Warren Stopak is 1134700016. It was assigned to this individual provider in the NPPES registry on April 21, 2021.

Where is Warren Stopak located?

Warren Stopak practices at 13120 E 19th Ave, Aurora, CO 80045. The listed phone number is (301) 801-0813.

What is Warren Stopak's specialty?

The primary specialty registered for this NPI is Medical Genetics, specializing in Medical Biochemical Genetics, with taxonomy code 207SG0207X.

Is Warren Stopak enrolled in Medicare?

Yes. Warren Stopak is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Warren Stopak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Warren Stopak reassigns Medicare benefits to Sequence MD (Denver, 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 Warren Stopak'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 Warren Stopak was last updated on June 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.