Doctor profile · Federal record
Dr. Tammy Chen, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Grand Blanc, MI
- NPI 1851527071
- Accepts Medicare
- 17 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1 Genesys Pkwy
Grand Blanc, MI 484398065
(810) 606-6372 - Additional location
-
2025 Morse Ave
Sacramento, CA 958252115
(916) 973-5000 - Mailing address
-
2025 Morse Ave
Sacramento, CA 958252115
Credentials & registration
- NPI registered
- June 2009 — 17 yrs on file
- Profile last updated
- January 4, 2022
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Michigan #4301094407
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851527071. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
28
Distinct HCPCS
1
Medicare allowed
$5,316
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 28 | 28 | $190 |
In context: peer comparison
Among 28 peers in Grand Blanc Emergency Medicine Physician, average services per provider: 96. This provider delivers 0.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
42
Patients
31
Total drug cost
$351
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 16 | 16 | $102 |
| Ciprofloxacin Hcl | Generic | 15 | 15 | $121 |
| Furosemide | Generic | 11 | 0 | $128 |
Hospital affiliations
Frequently asked questions
What is Dr. Tammy Chen's medical specialty?
Dr. Tammy Chen practices Emergency Medicine Physician in Grand Blanc, MI.
Where does Dr. Tammy Chen practice?
Dr. Tammy Chen practices at 1 Genesys Pkwy, Grand Blanc, MI 484398065. Office phone: 8106066372.
What is Dr. Tammy Chen's NPI?
Dr. Tammy Chen's National Provider Identifier (NPI) is 1851527071, issued by NPPES.
Does Dr. Tammy Chen accept Medicare assignment?
Yes. Dr. Tammy Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Tammy Chen commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285). Source: CMS Medicare Physician & Other Practitioners file.