Doctor profile · Federal record
Dr. Abraham Chung, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Concord, CA
- NPI 1104845858
- Accepts Medicare
- MIPS 85.7 / 100 · 2023
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2700 Grant St, Suite 200
Concord, CA 945202266
(925) 674-2609
fax (925) 674-2211 - Mailing address
-
Dept 34929, P.O. Box 39000
San Francisco, CA 941390001
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- June 18, 2012
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A74982
- Medicaid
- CA #00A749820
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104845858. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
650
Distinct HCPCS
5
Medicare allowed
$83,556
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 325 | 110 | $90 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 160 | 154 | $197 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 77 | 71 | $147 | |
99239 |
Hospital discharge day management, more than 30 minutes | 67 | 67 | $132 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 21 | 15 | $135 |
In context: peer comparison
Among 11 peers in Concord Internal Medicine Physician, average services per provider: 135. This provider delivers 4.8× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbott Laboratories | 1 | $20.22 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
27
Patients
13
Total drug cost
$109
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 14 | 0 | $62 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 13 | 13 | $48 |
Hospital affiliations
Frequently asked questions
What is Dr. Abraham Chung's medical specialty?
Dr. Abraham Chung practices Internal Medicine Physician in Concord, CA.
Where does Dr. Abraham Chung practice?
Dr. Abraham Chung practices at 2700 Grant St, Concord, CA 945202266. Office phone: 9256742609.
What is Dr. Abraham Chung's NPI?
Dr. Abraham Chung's National Provider Identifier (NPI) is 1104845858, issued by NPPES.
Does Dr. Abraham Chung accept Medicare assignment?
Yes. Dr. Abraham Chung accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Abraham Chung commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.