Andrew Castiglione, MD
NPI 1023404423 · Internal Medicine Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Castiglione, MD is a Internal Medicine Physician provider in Hartford, CT (NPI 1023404423).
Provider details
- NPI number
- 1023404423
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
562 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 35 Minutes99232 | 455 | $81 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 96 | $84 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 11 | $86 |
Typical Medicare-allowed amounts for these services range $81–$86 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-13
- Last updated
- 2018-07-23
Frequently asked questions
- What is Andrew Castiglione's NPI number?
- Andrew Castiglione's National Provider Identifier (NPI) is 1023404423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Castiglione's specialty?
- Andrew Castiglione is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Castiglione located?
- Andrew Castiglione's practice location on file with NPPES is 80 Seymour Street, Hartford, CT 06102.
- What is Andrew Castiglione's phone number?
- The practice phone number listed in the NPPES registry for Andrew Castiglione is (860) 972-2085.
- Does Andrew Castiglione accept Medicare?
- Andrew Castiglione is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Castiglione's NPI active?
- Yes — Andrew Castiglione's NPI (1023404423) is active in the NPPES registry as of the last update on 2018-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.