Quick answers
- Does Elissa L. Keyser accept Medicare assignment?
- Yes. Medicare's clinician data says Elissa L. Keyser 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 Elissa L. Keyser see?
- In 2024, CMS data shows 158 Original Medicare patients and 223 services for Elissa L. Keyser. This counts Original Medicare only and measures volume, not quality.
- What is Elissa L. Keyser's NPI number?
- 1386014991. 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 Elissa L. Keyser, 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 | 158 |
|---|---|
| Services billed to Medicare | 223 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)35 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)30 services
- Telephone medical discussion with physician, 21-30 minutes (99443)22 services
- Fluoroscopic guidance for insertion or removal of central vein access device (77001)17 services
- Insertion of central venous tube with port (5 years or older) (36561)12 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 cholesterol71%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)70%
- Arthritis49%
- Anxiety40%
- Diabetes34%
Practice locations
Addresses where Elissa L. Keyser is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Fellowship DrConroe, TX 77384 (713) 563‑0050
- 13900 Katy FwyHouston, TX 77079 (713) 563‑9600
- 2130 W Holcombe Blvd, Univ of Tx M D Ande Life Sciences PlazaHouston, TX 77030 (713) 592‑5433
Group practices
Medicare enrollment lists Elissa L. Keyser as a member of this group (CMS data updated October 2, 2026).
- Physicians Referral Service2,765 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Conroe
Clinicians with the same Medicare primary specialty in Conroe, TX — not a recommendation.
Other clinicians in Physicians Referral Service
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1386014991 |
| 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
- 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