Jenna Chen
NPI 1689294001 · Internal Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jenna Chen is a Internal Medicine Physician provider in Oakland, CA (NPI 1689294001).
Provider details
- NPI number
- 1689294001
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
174 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 92 | $87 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 38 | $131 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 18 | $92 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 15 | $185 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $145 |
Typical Medicare-allowed amounts for these services range $87–$185 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-27
- Last updated
- 2023-09-12
- Certified
- 2023-09-12
Frequently asked questions
- What is Jenna Chen's NPI number?
- Jenna Chen's National Provider Identifier (NPI) is 1689294001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jenna Chen's specialty?
- Jenna Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jenna Chen located?
- Jenna Chen's practice location on file with NPPES is 1411 E 31st St Fl A2, Oakland, CA 94602-1018.
- What is Jenna Chen's phone number?
- The practice phone number listed in the NPPES registry for Jenna Chen is (510) 437-5039.
- Does Jenna Chen accept Medicare?
- Jenna Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jenna Chen's NPI active?
- Yes — Jenna Chen's NPI (1689294001) is active in the NPPES registry as of the last update on 2023-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.