Quick answers
- Does Rebecca J. Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says Rebecca J. Callahan 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 Rebecca J. Callahan see?
- In 2024, CMS data shows 871 Original Medicare patients and 2,235 services for Rebecca J. Callahan. This counts Original Medicare only and measures volume, not quality.
- What is Rebecca J. Callahan's NPI number?
- 1659807741. 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 Rebecca J. Callahan, 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 | 871 |
|---|---|
| Services billed to Medicare | 2,235 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Imaging of retina (92134)606 services
- Established patient complete exam of visual system (92014)567 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)367 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)246 services
- Imaging of optic nerve (92133)182 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 cholesterol66%
- High blood pressure64%
- Arthritis41%
- Diabetes31%
- Chronic kidney disease21%
- Osteoporosis21%
Practice locations
Addresses where Rebecca J. Callahan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1740 Grande Blvd SE, Suite BRio Rancho, NM 87124 (505) 892‑3434
- 2947 Rodeo Park Dr ESanta Fe, NM 87505 (505) 983‑6613
- 5757 Harper Dr NEAlbuquerque, NM 87109 (505) 888‑5757
Group practices
Medicare enrollment lists Rebecca J. Callahan as a member of this group (CMS data updated October 2, 2026).
- Eye Associates of New Mexico Ltd64 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Rio Rancho
Clinicians with the same Medicare primary specialty in Rio Rancho, NM — not a recommendation.
Other clinicians in Eye Associates of New Mexico Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Southern College Of Optometry |
| Graduation year | 2017 (9 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659807741 |
| 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