Doctor profile · Federal record
Dr. Diana Chan, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Berkeley Heights, NJ
- NPI 1235399288
- Accepts Medicare
- 18 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1 Diamond Hill RD
Berkeley Heights, NJ 079222104
(908) 273-4300
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- September 23, 2011
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New Jersey #25MA08988900
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235399288. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
406
Distinct HCPCS
6
Medicare allowed
$41,922
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 214 | 94 | $85 | |
99238 |
Hospital discharge day management, 30 minutes or less | 71 | 68 | $86 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 51 | 50 | $138 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 34 | 34 | $143 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 24 | 24 | $186 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 12 | 12 | $105 |
In context: peer comparison
Among 13 peers in this city , average services per provider: 284. This provider delivers 1.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
17
Patients
15
Total drug cost
$144
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 17 | 15 | $144 |
Frequently asked questions
What is Dr. Diana Chan's medical specialty?
Dr. Diana Chan practices Internal Medicine Physician in Berkeley Heights, NJ.
Where does Dr. Diana Chan practice?
Dr. Diana Chan practices at 1 Diamond Hill RD, Berkeley Heights, NJ 079222104. Office phone: 9082734300.
What is Dr. Diana Chan's NPI?
Dr. Diana Chan's National Provider Identifier (NPI) is 1235399288, issued by NPPES.
Does Dr. Diana Chan accept Medicare assignment?
Yes. Dr. Diana Chan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Chan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99238); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.