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Obstetrics/Gynecology

Thylma L. Sta. Maria, MD

Sees patients in Chandler, AZ · Glendale, AZ · Arizona

Summary

Dr. Thylma L. Sta. Maria, MD is an OB-GYN at 2545 W Frye Rd, Suite 5, Chandler, AZ 85224. Phone: (480) 821-3600. Accepts Medicare assignment. In 2024, Thylma L. Sta. Maria had 23 Original Medicare patients and 70 services. NPI 1114983822. 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: 2545 W Frye Rd, Suite 5, Chandler, AZ 85224 · Directions (1 more location)
  • Phone: (480) 821‑3600
  • Medicare: Accepts Medicare assignment
  • Group practice: Momdoc LLC
  • Medical school: New York University School Of Medicine · graduated 1995 (31 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Thylma L. Sta. Maria, 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 Thylma L. Sta. Maria accept Medicare assignment?
Yes. Medicare's clinician data says Thylma L. Sta. Maria 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 Thylma L. Sta. Maria see?
In 2024, CMS data shows 23 Original Medicare patients and 70 services for Thylma L. Sta. Maria. This counts Original Medicare only and measures volume, not quality.
What is Thylma L. Sta. Maria's NPI number?
1114983822. 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 Thylma L. Sta. Maria, 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 patients23
Services billed to Medicare70
Different services or procedures17
Participating Medicare providerYes
Average age of these patients59

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)32 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 pressure57%
  • High cholesterol57%
  • Arthritis57%

Practice locations

Addresses where Thylma L. Sta. Maria is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Thylma L. Sta. Maria as a member of this group (CMS data updated October 2, 2026).

  • Momdoc LLC64 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Arizona →

Other OB-GYNs in Chandler

Clinicians with the same Medicare primary specialty in Chandler, AZ — not a recommendation.

All OB-GYNs in Chandler →

Other clinicians in Momdoc LLC

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

Clinician information

CredentialMD
Medical schoolNew York University School Of Medicine
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1114983822
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