Quick answers
- Does Justin C. Kerstetter accept Medicare assignment?
- Yes. Medicare's clinician data says Justin C. Kerstetter 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 Justin C. Kerstetter see?
- In 2024, CMS data shows 636 Original Medicare patients and 2,682 services for Justin C. Kerstetter. This counts Original Medicare only and measures volume, not quality.
- What is Justin C. Kerstetter's NPI number?
- 1629241054. 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 Justin C. Kerstetter, 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 | 636 |
|---|---|
| Services billed to Medicare | 2,682 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)806 services
- Pathology examination of tissue using a microscope, moderately high complexity (88307)118 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)82 services
- Pathology examination of tissue using a microscope, moderately low complexity (88304)60 services
- Special stained specimen slides to examine tissue, initial procedure (88342)53 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 cholesterol70%
- Arthritis47%
- Diabetes35%
- Chronic kidney disease28%
- Ischemic heart disease27%
Hospitals where Justin C. Kerstetter works
Medicare's Facility Affiliation Data lists Justin C. Kerstetter 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.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050026
- Loma Linda University Medical CenterLoma Linda, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050327
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050222
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100
Practice locations
Addresses where Justin C. Kerstetter is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 11234 Anderson StLoma Linda, CA 92354
- 11370 Anderson StLoma Linda, CA 92354
- 2220 N Screenland Dr, Suite 101Burbank, CA 91505 (818) 842‑8000
- 26780 Barton RdRedlands, CA 92373 (909) 558‑5174
- 308 W State St, Suite 3aRedlands, CA 92373 (909) 435‑6758
Group practices
Medicare enrollment lists Justin C. Kerstetter as a member of these groups (CMS data updated October 2, 2026).
- Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group
- Skin and Beauty Center Inc34 clinicians in the group
- Analytic Pathology Medical Group Inc19 clinicians in the group
- Pacific Rim Pathology Medical Corporation19 clinicians in the group
- Justin C Kerstetter MD Inc2 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Loma Linda
Clinicians with the same Medicare primary specialty in Loma Linda, CA — not a recommendation.
Other clinicians in Faculty Physicians and Surgeons of Llusm
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629241054 |
| 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