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Obstetrics/Gynecology

Rindo R. Sironi, MD

Works at hospitals in Billings, MT · Montana

Summary

Dr. Rindo R. Sironi, MD is an OB-GYN at 1611 Zimmerman Trl, Billings, MT 59102. Phone: (406) 248-3607. May accept Medicare assignment. In 2024, Rindo R. Sironi had 68 Original Medicare patients and 1,661 services. NPI 1568558500. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 1611 Zimmerman Trl, Billings, MT 59102 · Directions
  • Phone: (406) 248‑3607
  • Medicare: May accept Medicare assignment
  • Hospital: Intermountain Health St Vincent Regional Hospital
  • Group practice: Billings Ob-Gyn Associates PC
  • Medical school: Medical College Of Wisconsin · graduated 1999 (27 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Rindo R. Sironi, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Rindo R. Sironi accept Medicare assignment?
Medicare's clinician data says Rindo R. Sironi may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Rindo R. Sironi see?
In 2024, CMS data shows 68 Original Medicare patients and 1,661 services for Rindo R. Sironi. This counts Original Medicare only and measures volume, not quality.
What is Rindo R. Sironi's NPI number?
1568558500. 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 Rindo R. Sironi, 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 patients68
Services billed to Medicare1,661
Different services or procedures32
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)22 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)17 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)14 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 pressure56%
  • High cholesterol49%
  • Arthritis41%
  • Depression32%
  • Anxiety28%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)25%

Hospitals where Rindo R. Sironi works

Medicare's Facility Affiliation Data lists Rindo R. Sironi 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.

Practice locations

Addresses where Rindo R. Sironi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Rindo R. Sironi as a member of this group (CMS data updated October 2, 2026).

  • Billings Ob-Gyn Associates PC12 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Montana →

Other OB-GYNs in Billings

Clinicians with the same Medicare primary specialty in Billings, MT — not a recommendation.

All OB-GYNs in Billings →

Other clinicians in Billings Ob-Gyn Associates PC

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

Clinician information

CredentialMD
Medical schoolMedical College Of Wisconsin
Graduation year1999 (27 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1568558500
CorrectionsReport 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

  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