Doctor profile · Federal record
Dr. Colleen Hartwig, D.O.
Internal Medicine Physician (CMS: Internal Medicine) · Livonia, MI
- NPI 1720056757
- Accepts Medicare
- MIPS 84.7 / 100 · 2023
- 31 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
36123 Schoolcraft RD
Livonia, MI 481501216
(734) 464-0887
fax (734) 402-0254 - Additional location
-
28050 Grand River Ave
Farmington Hills, MI 483365919
(947) 521-8000
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- July 28, 2022
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Michigan #5101012752
- Medicaid
- MI #4622994
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1720056757. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
835
Distinct HCPCS
5
Medicare allowed
$95,906
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 318 | 116 | $81 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 209 | 93 | $121 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 147 | 113 | $177 | |
99239 |
Hospital discharge day management, more than 30 minutes | 142 | 116 | $116 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 14 | $133 |
In context: peer comparison
Among 40 peers in Livonia Internal Medicine Physician, average services per provider: 114. This provider delivers 7.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
200
Patients
187
Total drug cost
$11,164
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 30 | 29 | $202 |
| Furosemide | Generic | 28 | 27 | $97 |
| Pantoprazole Sodium | Generic | 23 | 23 | $216 |
| Prednisone | Generic | 22 | 20 | $102 |
| Carvedilol | Generic | 18 | 15 | $128 |
| Losartan Potassium | Generic | 16 | 13 | $105 |
| Amlodipine Besylate | Generic | 13 | 13 | $56 |
| Hydralazine Hcl | Generic | 13 | 12 | $118 |
| Metoprolol Tartrate | Generic | 13 | 12 | $58 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 12 | 11 | $64 |
Hospital affiliations
Frequently asked questions
What is Dr. Colleen Hartwig's medical specialty?
Dr. Colleen Hartwig practices Internal Medicine Physician in Livonia, MI.
Where does Dr. Colleen Hartwig practice?
Dr. Colleen Hartwig practices at 36123 Schoolcraft RD, Livonia, MI 481501216. Office phone: 7344640887.
What is Dr. Colleen Hartwig's NPI?
Dr. Colleen Hartwig's National Provider Identifier (NPI) is 1720056757, issued by NPPES.
Does Dr. Colleen Hartwig accept Medicare assignment?
Yes. Dr. Colleen Hartwig accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Colleen Hartwig commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.