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 patients | 631 |
|---|---|
| Services billed to Medicare | 1,704 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Measurement of corneal curvature and depth of eye (92136)430 services
- Established patient complete exam of visual system (92014)327 services
- New patient complete exam of visual system (92004)256 services
- Removal of cataract with insertion of prosthetic lens (66984)210 services
- 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.
- CHRISTUS Spohn Hospital Corpus ChristiCorpus Christi, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450046
Practice locations
Addresses where Adam L. Spengler is enrolled with Medicare (CMS data updated October 2, 2026).
- 3100 Weslayan St, Suite 400Houston, TX 77027 (713) 526‑1600
- 5350 S Staples St, Suite 318Corpus Christi, TX 78411 (361) 992‑1060
- 605 Medical Ct, Suite 203Brenham, TX 77833 (979) 830‑1444
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
- Ophthalmologyprimary
Other ophthalmologists in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Berkeley Eye Institute, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At Houston |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689965964 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians