Quick answers
- Does Christopher Vercammen-Grandjean accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher Vercammen-Grandjean 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 Christopher Vercammen-Grandjean see?
- In 2024, CMS data shows 182 Original Medicare patients and 630 services for Christopher Vercammen-Grandjean. This counts Original Medicare only and measures volume, not quality.
- What is Christopher Vercammen-Grandjean's NPI number?
- 1942543699. 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 Christopher Vercammen-Grandjean, 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 | 182 |
|---|---|
| Services billed to Medicare | 630 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)314 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)52 services
- Administration of influenza virus vaccine (G0008)26 services
- Influenza vaccine, inactivated (90653)25 services
- Telephone medical discussion with physician, 11-20 minutes (99442)16 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 pressure71%
- High cholesterol68%
- Arthritis49%
- Ischemic heart disease26%
- Osteoporosis23%
- Chronic kidney disease22%
Practice locations
Addresses where Christopher Vercammen-Grandjean is enrolled with Medicare (CMS data updated October 2, 2026).
- 3111 Camino Del Rio N, Suite 625San Diego, CA 92108 (619) 738‑5566
Group practices
Medicare enrollment lists Christopher Vercammen-Grandjean as a member of this group (CMS data updated October 2, 2026).
- Pouya Afshar MD Inc19 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Pouya Afshar MD Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942543699 |
| 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