Alexander Choi
NPI 1518586023 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Choi is a Internal Medicine Physician provider in Boston, MA (NPI 1518586023).
Provider details
- NPI number
- 1518586023
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- 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
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
696 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 | 374 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 123 | $82 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 96 | $119 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 51 | $180 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 36 | $51 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 |
Practice location
Mailing address
Additional practice locations (1)
- Weill Cornell Internal Medicine Associates505 East 70th StreetNew York, NY 10021Phone: (212) 746-2900Fax: (212) 746-4609
Registry dates
- Enumerated
- 2020-04-14
- Last updated
- 2023-07-27
- Certified
- 2023-07-27
Frequently asked questions
- What is Alexander Choi's NPI number?
- Alexander Choi's National Provider Identifier (NPI) is 1518586023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Choi's specialty?
- Alexander Choi is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Choi located?
- Alexander Choi's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Alexander Choi's phone number?
- The practice phone number listed in the NPPES registry for Alexander Choi is (617) 732-5500.
- Does Alexander Choi accept Medicare?
- Alexander Choi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Choi's NPI active?
- Yes — Alexander Choi's NPI (1518586023) is active in the NPPES registry as of the last update on 2023-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.