Doctor profile · Federal record
Dr. Jennifer O'Neill-Cha, M.D.
Hospitalist Physician (CMS: Hospitalist) · Concord, CA
- NPI 1033479936
- Accepts Medicare
- 14 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2700 Grant St Ste 200
Concord, CA 945202270
(925) 947-3312 - Additional location
-
350 Hawthorne Ave Rm 2346
Oakland, CA 946093108
(510) 869-6883
fax (510) 869-6888 - Mailing address
-
1450 Treat Blvd # 300
Walnut Creek, CA 945972168
Credentials & registration
- NPI registered
- May 2012 — 14 yrs on file
- Profile last updated
- April 24, 2024
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- California #A126813
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033479936. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
334
Distinct HCPCS
6
Medicare allowed
$62,224
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 234 | 230 | $196 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 42 | 24 | $135 | |
99291 |
Critical care, first 30-74 minutes | 20 | 20 | $237 | |
99239 |
Hospital discharge day management, more than 30 minutes | 16 | 16 | $132 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 11 | 11 | $205 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 11 | 11 | $147 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 100. This provider delivers 3.3× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Jennifer O'Neill-Cha's medical specialty?
Dr. Jennifer O'Neill-Cha practices Hospitalist Physician in Concord, CA.
Where does Dr. Jennifer O'Neill-Cha practice?
Dr. Jennifer O'Neill-Cha practices at 2700 Grant St Ste 200, Concord, CA 945202270. Office phone: 9259473312.
What is Dr. Jennifer O'Neill-Cha's NPI?
Dr. Jennifer O'Neill-Cha's National Provider Identifier (NPI) is 1033479936, issued by NPPES.
Does Dr. Jennifer O'Neill-Cha accept Medicare assignment?
Yes. Dr. Jennifer O'Neill-Cha accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jennifer O'Neill-Cha commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.