Doctor profile · Federal record
Dr. Palaniappan Chidambaram, M.D.
Internal Medicine Physician (CMS: Addiction Medicine) · Internal Medicine Physician · Addiction Medicine (Internal Medicine) Physician · Portland, OR
- NPI 1770651200
- Accepts Medicare
- MIPS 87.8 / 100 · 2023
- 32 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5251 Ne Glisan St, Bldg A, 2Nd Floor
Portland, OR 972133052
(503) 215-4860
fax (503) 215-4839 - Mailing address
-
Po Box 3158
Portland, OR 972083158
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- February 19, 2021
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Oregon #MD173966 · Michigan #4301081783
- Medicaid (2)
- MI #476636810 · OR #500690117
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770651200. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
144
Distinct HCPCS
3
Medicare allowed
$18,545
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 74 | 28 | $120 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 38 | $172 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 26 | 12 | $81 |
In context: peer comparison
Among 209 peers in Portland Internal Medicine Physician, average services per provider: 60. This provider delivers 2.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
31
Patients
30
Total drug cost
$8,883
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acamprosate Calcium | Generic | 31 | 30 | $8,883 |
Hospital affiliations
Frequently asked questions
What is Dr. Palaniappan Chidambaram's medical specialty?
Dr. Palaniappan Chidambaram practices Internal Medicine Physician in Portland, OR.
Where does Dr. Palaniappan Chidambaram practice?
Dr. Palaniappan Chidambaram practices at 5251 Ne Glisan St, Portland, OR 972133052. Office phone: 5032154860.
What is Dr. Palaniappan Chidambaram's NPI?
Dr. Palaniappan Chidambaram's National Provider Identifier (NPI) is 1770651200, issued by NPPES.
Does Dr. Palaniappan Chidambaram accept Medicare assignment?
Yes. Dr. Palaniappan Chidambaram accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Palaniappan Chidambaram commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.