Quick answers
- Does Isela Penunuri accept Medicare assignment?
- Yes. Medicare's clinician data says Isela Penunuri 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 Isela Penunuri see?
- In 2024, CMS data shows 122 Original Medicare patients and 521 services for Isela Penunuri. This counts Original Medicare only and measures volume, not quality.
- What is Isela Penunuri's NPI number?
- 1548295439. 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 Isela Penunuri, 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 | 122 |
|---|---|
| Services billed to Medicare | 521 |
| Different services or procedures | 52 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)160 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)47 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)46 services
- Blood glucose (sugar) test performed by hand-held instrument (82962)39 services
- Automated urinalysis test (81003)33 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 cholesterol75%
- High blood pressure67%
- Arthritis36%
- Diabetes20%
- Depression20%
- Anxiety20%
Practice locations
Addresses where Isela Penunuri is enrolled with Medicare (CMS data updated October 2, 2026).
- 277 Rancheros Dr, Suite 100San Marcos, CA 92069 (866) 228‑2236
Group practices
Medicare enrollment lists Isela Penunuri as a member of this group (CMS data updated October 2, 2026).
- Graybill Medical Group Inc104 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in San Marcos
Clinicians with the same Medicare primary specialty in San Marcos, CA — not a recommendation.
Other clinicians in Graybill Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548295439 |
| 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