Alexander Christakis, M.D.
NPI 1538512231 · Anatomic Pathology & Clinical Pathology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Christakis, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Boston, MA (NPI 1538512231).
Provider details
- NPI number
- 1538512231
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 278394 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,753 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 1,580 | $44 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 291 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 222 | $44 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 127 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 104 | $10 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 83 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$33 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 1290 Silas Deane Hwy Ste 101Wethersfield, CT 06109-4337Phone: (860) 859-9061Fax: (860) 889-6200
- 110 Clock Tower Sq Ste 100Portsmouth, RI 02871-1396Phone: (401) 293-5600
Registry dates
- Enumerated
- 2016-07-18
- Last updated
- 2026-04-02
- Certified
- 2026-04-02
Frequently asked questions
- What is Alexander Christakis's NPI number?
- Alexander Christakis's National Provider Identifier (NPI) is 1538512231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Christakis's specialty?
- Alexander Christakis is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Christakis located?
- Alexander Christakis's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Alexander Christakis's phone number?
- The practice phone number listed in the NPPES registry for Alexander Christakis is (617) 732-5500.
- Does Alexander Christakis accept Medicare?
- Alexander Christakis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Christakis's NPI active?
- Yes — Alexander Christakis's NPI (1538512231) is active in the NPPES registry as of the last update on 2026-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.