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Obstetrics/Gynecology

Esther J. Tow-Der, MD

Works at hospitals in Modesto, CA · California

Summary

Dr. Esther J. Tow-Der, MD is an OB-GYN at 1552 Coffee Rd, Suite 100, Modesto, CA 95355. Phone: (209) 521-4372. Accepts Medicare assignment. In 2024, Esther J. Tow-Der had 96 Original Medicare patients and 243 services. NPI 1427008028. 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: 1552 Coffee Rd, Suite 100, Modesto, CA 95355 · Directions
  • Phone: (209) 521‑4372
  • Medicare: Accepts Medicare assignment
  • Hospital: Memorial Medical Center
  • Group practice: Hera Ob-Gyn Medical Group Inc
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 1985 (41 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Esther J. Tow-Der, 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 Esther J. Tow-Der accept Medicare assignment?
Yes. Medicare's clinician data says Esther J. Tow-Der 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 Esther J. Tow-Der see?
In 2024, CMS data shows 96 Original Medicare patients and 243 services for Esther J. Tow-Der. This counts Original Medicare only and measures volume, not quality.
What is Esther J. Tow-Der's NPI number?
1427008028. 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 Esther J. Tow-Der, 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 patients96
Services billed to Medicare243
Different services or procedures26
Participating Medicare providerYes
Average age of these patients67

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)71 services
  2. Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)30 services
  3. Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)25 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)24 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)22 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 cholesterol67%
  • High blood pressure54%
  • Arthritis38%
  • Diabetes22%
  • Osteoporosis21%
  • Anxiety19%

Hospitals where Esther J. Tow-Der works

Medicare's Facility Affiliation Data lists Esther J. Tow-Der 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 Esther J. Tow-Der is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Esther J. Tow-Der as a member of this group (CMS data updated October 2, 2026).

  • Hera Ob-Gyn Medical Group Inc6 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in California →

Other OB-GYNs in Modesto

Clinicians with the same Medicare primary specialty in Modesto, CA — not a recommendation.

All OB-GYNs in Modesto →

Other clinicians in Hera Ob-Gyn Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year1985 (41 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427008028
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