Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Obstetrics/Gynecology

Ana S. Madariya, MD

Sees patients in Worcester, MA · Southborough, MA · Massachusetts

Summary

Dr. Ana S. Madariya, MD is an OB-GYN at 123 Summer St, Worcester, MA 01608. Phone: (508) 363-5000. Accepts Medicare assignment. In 2024, Ana S. Madariya had 56 Original Medicare patients and 104 services. NPI 1952530685. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 123 Summer St, Worcester, MA 01608 · Directions (1 more location)
  • Phone: (508) 363‑5000
  • Medicare: Accepts Medicare assignment
  • Group practice: Reliant Medical Group Inc
  • Medical school: graduated 2008 (18 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Ana S. Madariya, 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 Ana S. Madariya accept Medicare assignment?
Yes. Medicare's clinician data says Ana S. Madariya 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 Ana S. Madariya see?
In 2024, CMS data shows 56 Original Medicare patients and 104 services for Ana S. Madariya. This counts Original Medicare only and measures volume, not quality.
What is Ana S. Madariya's NPI number?
1952530685. 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 Ana S. Madariya, 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 patients56
Services billed to Medicare104
Different services or procedures22
Participating Medicare providerYes
Average age of these patients63

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)26 services
  2. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)15 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)13 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 cholesterol71%
  • High blood pressure52%
  • Anxiety41%
  • Arthritis36%
  • Depression30%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)25%

Practice locations

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

Group practices

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

  • Reliant Medical Group Inc640 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Massachusetts →

Other OB-GYNs in Worcester

Clinicians with the same Medicare primary specialty in Worcester, MA — not a recommendation.

All OB-GYNs in Worcester →

Other clinicians in Reliant Medical Group Inc

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

Clinician information

CredentialMD
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952530685
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians