Quick answers
- Does Monica A. Sierra accept Medicare assignment?
- Yes. Medicare's clinician data says Monica A. Sierra accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Monica A. Sierra see?
- In 2024, CMS data shows 248 Original Medicare patients and 393 services for Monica A. Sierra. This counts Original Medicare only and measures volume, not quality.
- What is Monica A. Sierra's NPI number?
- 1629610464. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Monica A. Sierra, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 248 |
|---|---|
| Services billed to Medicare | 393 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)85 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)85 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)83 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system (93288)58 services
- Evaluation of single, dual, or multiple lead implantable defibrillator system (93289)37 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation69%
- Arthritis63%
- Ischemic heart disease54%
- Diabetes44%
Hospitals where Monica A. Sierra works
Medicare's Facility Affiliation Data lists Monica A. Sierra at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Citizens Medical CenterVictoria, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450023
- De Tar Hospital NavarroVictoria, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450147
- Memorial Medical CenterPort Lavaca, TX · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 451356
Practice locations
Addresses where Monica A. Sierra is enrolled with Medicare (CMS data updated October 2, 2026).
- 104 7th StBay City, TX 77414 (979) 241‑3315
- 2700 Citizens Plz, Suite 300Victoria, TX 77901 (361) 573‑0756
- 506 E San Antonio St, De Tar Navarro HospitalVictoria, TX 77901 (361) 575‑7441
Group practices
Medicare enrollment lists Monica A. Sierra as a member of these groups (CMS data updated October 2, 2026).
- Citizens Medical Center County of Victoria100 clinicians in the group
- Victoria Hospitalist Associates, LLC39 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Bay City
Clinicians with the same Medicare primary specialty in Bay City, TX — not a recommendation.
Other clinicians in Citizens Medical Center County of Victoria
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629610464 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians