Alexander Pyden, MD
NPI 1548650971 · Anatomic Pathology & Clinical Pathology Physician · Burlington, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Pyden, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Burlington, MA (NPI 1548650971).
Provider details
- NPI number
- 1548650971
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology 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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,446 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) |
|---|---|---|
| Protein Measurement, Serum84165 | 705 | $19 |
| Immunologic Analysis Technique on Serum (immunofixation)86334 | 371 | $19 |
| Protein Measurement84181 | 241 | $19 |
| Protein Measurement, Body Fluid84166 | 80 | $19 |
| Immunologic Analysis Technique on Body Fluid, Other Fluids With Concentration86335 | 30 | $19 |
| Hemoglobin Analysis and Measurement, Electrophoresis83020 | 19 | $19 |
Typical Medicare-allowed amounts for these services range $19–$19 (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.
Practice location
Mailing address
Additional practice locations (1)
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 667-7284
Registry dates
- Enumerated
- 2015-01-22
- Last updated
- 2021-06-09
- Certified
- 2021-06-09
Frequently asked questions
- What is Alexander Pyden's NPI number?
- Alexander Pyden's National Provider Identifier (NPI) is 1548650971, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Pyden's specialty?
- Alexander Pyden is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Pyden located?
- Alexander Pyden's practice location on file with NPPES is 41 Mall Road Lahey Hospital and Medical Center, Burlington, MA 01805-5400.
- What is Alexander Pyden's phone number?
- The practice phone number listed in the NPPES registry for Alexander Pyden is (781) 744-8000.
- Does Alexander Pyden accept Medicare?
- Alexander Pyden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Pyden's NPI active?
- Yes — Alexander Pyden's NPI (1548650971) is active in the NPPES registry as of the last update on 2021-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.