Doctor profile · Federal record
Dr. Michelle Sit, MD
Rheumatology Physician (CMS: Rheumatology) · Rheumatology Physician · Internal Medicine Physician · Vacaville, CA
- NPI 1740269513
- Accepts Medicare
- 23 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1010 Nut Tree RD Ste 100A
Vacaville, CA 956874172
(707) 624-8532
fax (707) 624-8501
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- January 7, 2026
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State licenses (2)
- Virginia #0101238150 · California #C-188321
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1740269513. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$735
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 2 | $229.03 | |
| Ucb, INC. | 2 | $166.00 | |
| Abbvie INC. | 1 | $122.31 | |
| Janssen Biotech, INC. | 1 | $115.88 | |
| Gilead Sciences, INC. | 1 | $102.27 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Michelle Sit's medical specialty?
Dr. Michelle Sit practices Rheumatology Physician in Vacaville, CA.
Where does Dr. Michelle Sit practice?
Dr. Michelle Sit practices at 1010 Nut Tree RD Ste 100A, Vacaville, CA 956874172. Office phone: 7076248532.
What is Dr. Michelle Sit's NPI?
Dr. Michelle Sit's National Provider Identifier (NPI) is 1740269513, issued by NPPES.
Does Dr. Michelle Sit accept Medicare assignment?
Yes. Dr. Michelle Sit accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.