Emma Castillo Bercasio, MD
NPI 1083706568 · Infectious Disease Physician · Williamsburg, VA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Emma Castillo Bercasio, MD is a Infectious Disease Physician provider in Williamsburg, VA (NPI 1083706568).
Provider details
- NPI number
- 1083706568
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 200100655 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
717 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 337 | $119 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 139 | $173 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $97 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 91 | $79 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 49 | $145 |
Typical Medicare-allowed amounts for these services range $79–$173 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 59 | 11 |
| Vancomycin Hcl | 48 | 15 |
| Amoxicillin | 36 | — |
| Cefazolin Sodium | 27 | — |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 22 | — |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 21 | — |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 19 | — |
Practice location
Mailing address
Additional practice locations (1)
- 2704 N Main StSuite aTarboro, NC 27886-1918Phone: (252) 823-0808Fax: (252) 823-6010
Registry dates
- Enumerated
- 2006-09-29
- Last updated
- 2025-06-02
- Certified
- 2025-06-02
Frequently asked questions
- What is Emma Castillo Bercasio's NPI number?
- Emma Castillo Bercasio's National Provider Identifier (NPI) is 1083706568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emma Castillo Bercasio's specialty?
- Emma Castillo Bercasio is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Emma Castillo Bercasio located?
- Emma Castillo Bercasio's practice location on file with NPPES is 400 Sentara Cir Ste 201b, Williamsburg, VA 23188-5716.
- What is Emma Castillo Bercasio's phone number?
- The practice phone number listed in the NPPES registry for Emma Castillo Bercasio is (757) 345-4655.
- Does Emma Castillo Bercasio accept Medicare?
- Emma Castillo Bercasio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Emma Castillo Bercasio's NPI active?
- Yes — Emma Castillo Bercasio's NPI (1083706568) is active in the NPPES registry as of the last update on 2025-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.