TATIANA RAMIREZ DOMINGUEZ MD
NPI 1043443377
Colon & Rectal Surgery in Saint Louis, MO
About Tatiana Ramirez Dominguez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TATIANA RAMIREZ DOMINGUEZ MD (NPI 1043443377) is an individual colon & rectal surgery provider in Saint Louis, Missouri, licensed in Missouri (2019007247) and active in the NPI registry since September 2009. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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
Tatiana Ramirez Dominguez 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 Tatiana Ramirez Dominguez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 69 clinicians in this Medicare group
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 168 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital Jefferson
Acute Care Hospitals · Festus, MOMercy Hospital Washington
Acute Care Hospitals · Washington, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63141 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Tatiana Ramirez Dominguez's NPI number?
The NPI number for Tatiana Ramirez Dominguez is 1043443377. It was assigned to this individual provider in the NPPES registry on September 3, 2009.
Where is Tatiana Ramirez Dominguez located?
Tatiana Ramirez Dominguez practices at 621 S New Ballas Rd Ste 7011B, Saint Louis, MO 63141. The listed phone number is (314) 251-6840.
What is Tatiana Ramirez Dominguez's specialty?
The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.
Is Tatiana Ramirez Dominguez enrolled in Medicare?
Yes. Tatiana Ramirez Dominguez 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 Tatiana Ramirez Dominguez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tatiana Ramirez Dominguez reassigns Medicare benefits to 2 organizations: Mercy Clinic Gastroenterology, LLC (Saint Louis, MO) and Mercy Clinic Surgical Specialists, LLC (Washington, MO). 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 Tatiana Ramirez Dominguez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tatiana Ramirez Dominguez accept?
Health plans from Anthem Blue Cross and Blue Shield and UnitedHealthcare list Tatiana Ramirez Dominguez 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.
Is Tatiana Ramirez Dominguez affiliated with any hospitals?
According to CMS data, Tatiana Ramirez Dominguez is affiliated with Mercy Hospital St Louis, Mercy Hospital Jefferson, Mercy Hospital Washington and Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Tatiana Ramirez Dominguez was last updated on February 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Tatiana Ramirez Dominguez, MD · NPI 1043443377
Colon & Rectal Surgery physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since September 3, 2009.
## Identity
- **NPI:** 1043443377 (Entity type: Individual)
- **Enumerated:** September 3, 2009
- **Primary specialty:** Colon & Rectal Surgery · taxonomy 208C00000X
- **State license:** 2019007247 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 621 S NEW BALLAS RD STE 7011B, Saint Louis, MO 63141-8275
- **Phone:** (314) 251-6840 · **Fax:** (314) 251-7249
## 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): Mercy Clinic Gastroenterology, LLC (NPI 1528295334, Saint Louis, MO); Mercy Clinic Surgical Specialists, LLC (NPI 1043530538, Washington, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** February 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1043443377) · Data from the CMS NPPES public registry.