Doctor profile · Federal record
Dr. Margaret Chen, MD
Internal Medicine Physician (CMS: Hospitalist) · Nephrology Physician · Duluth, MN
- NPI 1578678272
- Accepts Medicare
- 23 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
400 E 3Rd St
Duluth, MN 558051951
(218) 786-8364 - Mailing address
-
400 E Third St Mss 6Av-1
Duluth, MN 558051951
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- July 2, 2019
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Minnesota #62371 · Minnesota #1578678272
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1578678272. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,071
Distinct HCPCS
7
Medicare allowed
$119,473
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 600 | 160 | $114 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 153 | 60 | $76 | |
99239 |
Hospital discharge day management, more than 30 minutes | 113 | 113 | $110 | |
99291 |
Critical care, first 30-74 minutes | 77 | 28 | $202 | |
G0316 |
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 60 | 29 | $29 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 45 | 45 | $166 | |
99292 |
Critical care, each additional 30 minutes | 23 | 14 | $101 |
In context: peer comparison
Among 15 peers in this city , average services per provider: 76. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
66
Patients
41
Total drug cost
$498
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 20 | 14 | $256 |
| Furosemide | Generic | 18 | 15 | $59 |
| Famotidine | Generic | 15 | 0 | $136 |
| Prednisone | Generic | 13 | 12 | $46 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaret Chen's medical specialty?
Dr. Margaret Chen practices Internal Medicine Physician in Duluth, MN.
Where does Dr. Margaret Chen practice?
Dr. Margaret Chen practices at 400 E 3Rd St, Duluth, MN 558051951. Office phone: 2187868364.
What is Dr. Margaret Chen's NPI?
Dr. Margaret Chen's National Provider Identifier (NPI) is 1578678272, issued by NPPES.
Does Dr. Margaret Chen accept Medicare assignment?
Yes. Dr. Margaret Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Chen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.