Tania S. Sierra, MD

Medicare activity in 2024

Official CMS public-use data for Tania S. 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.

Most frequent services

1. Injection, onabotulinumtoxina, 1 unit (J0585)2,800 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)314 services
3. Ultrasound measurement of bladder capacity after voiding (51798)204 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)117 services
5. Insertion of temporary bladder tube (51701)54 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 cholesterol75%
• High blood pressure73%
• Arthritis60%
• Osteoporosis36%
• Anxiety33%
• Depression26%

Hospitals where Tania S. Sierra works

Medicare's Facility Affiliation Data lists Tania S. 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.

• Bridgeport HospitalBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070010
• Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018
• St Vincent's Medical CenterBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070028

Practice locations

Addresses where Tania S. Sierra is enrolled with Medicare (CMS data updated October 2, 2026).

• 267 Grant StBridgeport, CT 06610 (203) 384‑3000
• 365 Montauk AveNew London, CT 06320
• 52 Beach RdFairfield, CT 06824
• 5520 Park AveTrumbull, CT 06611
• 95 Armory RdStratford, CT 06614 (203) 384‑3388

Group practices

Medicare enrollment lists Tania S. Sierra as a member of this group (CMS data updated October 2, 2026).

• Northeast Medical Group Inc1,360 clinicians in the group

Specialties

• Obstetrics/Gynecologyprimary
• Urologyalso

Find other Obstetrics/Gynecology doctors in Connecticut →

Other OB-GYNs in Bridgeport

Clinicians with the same Medicare primary specialty in Bridgeport, CT — not a recommendation.

• Tess R. Hoerle
• Jean Tornatore, MD
• Stephen F. Thung, MD
• Sharon Dragich, MD
• Michael P. White, MD
• Arlene Gutman
• Steven A. Laifer, MD
• Shabnam M. Kashani, MD

All OB-GYNs in Bridgeport →

Other clinicians in Northeast Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Alexander Hallac, MD
• Alison Macdonald, MD
• Ahtsham Y. Chaudhary, MD
• Daniel Gomez, MD
• Ahmad Toumar, MD
• Gerard J. Kerins, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians