Doctor profile · Federal record
Dr. Emma Castillo Bercasio, MD
Infectious Disease Physician (CMS: Infectious Disease) · Infectious Disease Physician · Williamsburg, VA
- NPI 1083706568
- Accepts Medicare
- MIPS 93.2 / 100 · 2023
- 33 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
400 Sentara Cir Ste 201B
Williamsburg, VA 231885716
(757) 345-4655
fax (757) 390-4892 - Additional location
-
2704 N Main St, Suite A
Tarboro, NC 278861918
(252) 823-0808
fax (252) 823-6010
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- June 2, 2025
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207RI0200X — NUCC code
- State licenses (2)
- Virginia #0101266473 · North Carolina #200100655
- Medicaid
- NC #5900019
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083706568. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,147
Distinct HCPCS
6
Medicare allowed
$132,160
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 471 | 166 | $118 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 276 | 119 | $77 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 191 | 166 | $171 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 136 | 97 | $97 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 46 | 45 | $127 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 27 | 23 | $142 |
In context: peer comparison
Among 2 peers in Williamsburg Infectious Disease Physician, average services per provider: 166. This provider delivers 6.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
334
Patients
35
Total drug cost
$71,857
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Vancomycin Hcl | Generic | 77 | 14 | $8,237 |
| Ceftriaxone (Ceftriaxone Sodium) | Brand | 72 | 21 | $3,385 |
| Cefepime Hcl | Generic | 42 | 0 | $6,254 |
| Amoxicillin | Generic | 28 | 0 | $346 |
| Ampicillin Sodium | Generic | 27 | 0 | $3,698 |
| Doxycycline Hyclate | Generic | 20 | 0 | $764 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 18 | 0 | $64 |
| Cefazolin Sodium | Generic | 15 | 0 | $623 |
| Cephalexin | Generic | 13 | 0 | $278 |
| Descovy (Emtricitabine/Tenofov Alafenam) | Brand | 11 | 0 | $25,599 |
Frequently asked questions
What is Dr. Emma Castillo Bercasio's medical specialty?
Dr. Emma Castillo Bercasio practices Infectious Disease Physician in Williamsburg, VA.
Where does Dr. Emma Castillo Bercasio practice?
Dr. Emma Castillo Bercasio practices at 400 Sentara Cir Ste 201B, Williamsburg, VA 231885716. Office phone: 7573454655.
What is Dr. Emma Castillo Bercasio's NPI?
Dr. Emma Castillo Bercasio's National Provider Identifier (NPI) is 1083706568, issued by NPPES.
Does Dr. Emma Castillo Bercasio accept Medicare assignment?
Yes. Dr. Emma Castillo Bercasio accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Emma Castillo Bercasio 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); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.