Quick answers
- Does Chelsea Gelbart accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea Gelbart 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 Chelsea Gelbart see?
- In 2024, CMS data shows 82 Original Medicare patients and 465 services for Chelsea Gelbart. This counts Original Medicare only and measures volume, not quality.
- What is Chelsea Gelbart's NPI number?
- 1780333211. 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 Chelsea Gelbart, 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 | 82 |
|---|---|
| Services billed to Medicare | 465 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Advance care planning, first 30 minutes (99497)144 services
- Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)74 services
- Prolonged home or residence evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by the physician or qualif (G0318)62 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)49 services
- Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)44 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 cholesterol66%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)46%
- Chronic kidney disease43%
- Arthritis39%
- Depression34%
Practice locations
Addresses where Chelsea Gelbart is enrolled with Medicare (CMS data updated October 2, 2026).
- 3100 Summit St, Fl 2Oakland, CA 94609 (510) 869‑8865
Group practices
Medicare enrollment lists Chelsea Gelbart as a member of this group (CMS data updated October 2, 2026).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Oakland
Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.
Other clinicians in Sutter Bay Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| School | University Of California, San Francisco School Of Medicine |
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780333211 |
| 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