LYSSA N CHACKO MD
NPI 1629115993
Internal Medicine - Gastroenterology in Denver, CO
About Lyssa N Chacko Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LYSSA N CHACKO MD (NPI 1629115993) is an individual gastroenterology provider in Denver, Colorado, licensed in Pennsylvania (MD431382) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS and is a graduate of University Of Wisconsin School Of Medicine (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lyssa N Chacko Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Lyssa Chacko reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Denver, CO 80220
- Reassigned Medicare billing, Colorado enrollment
- 4,283 clinicians in this Medicare group
Denver, CO 80204
- Reassigned Medicare billing, Colorado enrollment
- 2,259 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 80220 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Lyssa Chacko's NPI number?
The NPI number for Lyssa Chacko is 1629115993. It was assigned to this individual provider in the NPPES registry on January 30, 2007.
Where is Lyssa Chacko located?
Lyssa Chacko practices at 1055 Clermont St # Ms 111E, Denver, CO 80220. The listed phone number is (303) 399-8020.
What is Lyssa Chacko's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Lyssa Chacko enrolled in Medicare?
Yes. Lyssa Chacko is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Lyssa Chacko's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lyssa Chacko reassigns Medicare benefits to 2 organizations: University Physicians Incorporated (Denver, CO) and Denver Health And Hospital Authority (Denver, CO). 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 Lyssa Chacko's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lyssa Chacko accept?
Health plans from Select Health list Lyssa Chacko 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 Lyssa Chacko was last updated on March 16, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.
# Lyssa N Chacko, MD · NPI 1629115993
Gastroenterology physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since January 30, 2007.
## Identity
- **NPI:** 1629115993 (Entity type: Individual)
- **Enumerated:** January 30, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** MD431382 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1055 CLERMONT ST # MS 111E, Denver, CO 80220-3808
- **Phone:** (303) 399-8020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): University Physicians Incorporated (NPI 1275987786, Denver, CO); Denver Health And Hospital Authority (NPI 1477569838, Denver, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2001
## Record status
- **NPPES last updated:** March 16, 2010
- **Other identifiers:** Medicare PIN 115231JH4 (PA); Medicaid 1019975240001 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1629115993) · Data from the CMS NPPES public registry.