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Ophthalmology

Adam L. Spengler, MD

Works at hospitals in Corpus Christi, TX · Texas

Summary

Dr. Adam L. Spengler, MD is an ophthalmologist at 3100 Weslayan St, Suite 400, Houston, TX 77027. Phone: (713) 526-1600. Accepts Medicare assignment. In 2024, Adam L. Spengler had 631 Original Medicare patients and 1,704 services. NPI 1689965964. 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: Ophthalmologist (Medicare lists Ophthalmology)
  • Address: 3100 Weslayan St, Suite 400, Houston, TX 77027 · Directions (2 more locations)
  • Phone: (713) 526‑1600
  • Medicare: Accepts Medicare assignment
  • Hospital: CHRISTUS Spohn Hospital Corpus Christi
  • Group practice: Berkeley Eye Institute, PLLC
  • Medical school: University Of Texas Medical School At Houston · graduated 2007 (19 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Adam L. Spengler, 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 Adam L. Spengler accept Medicare assignment?
Yes. Medicare's clinician data says Adam L. Spengler 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 Adam L. Spengler see?
In 2024, CMS data shows 631 Original Medicare patients and 1,704 services for Adam L. Spengler. This counts Original Medicare only and measures volume, not quality.
What is Adam L. Spengler's NPI number?
1689965964. 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 Adam L. Spengler, 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 patients631
Services billed to Medicare1,704
Different services or procedures19
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Measurement of corneal curvature and depth of eye (92136)430 services
  2. Established patient complete exam of visual system (92014)327 services
  3. New patient complete exam of visual system (92004)256 services
  4. Removal of cataract with insertion of prosthetic lens (66984)210 services
  5. Established patient problem focused exam of visual system (92012)197 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 pressure75%
  • High cholesterol75%
  • Arthritis45%
  • Diabetes36%
  • Ischemic heart disease25%
  • Chronic kidney disease24%

Hospitals where Adam L. Spengler works

Medicare's Facility Affiliation Data lists Adam L. Spengler 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 Adam L. Spengler is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Berkeley Eye Institute, PLLC63 clinicians in the group

Specialties

Find other Ophthalmology doctors in Texas →

Other ophthalmologists in Houston

Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.

All ophthalmologists in Houston →

Other clinicians in Berkeley Eye Institute, PLLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At Houston
Graduation year2007 (19 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689965964
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