Alexander Ladenheim, MD
NPI 1528520434 · Anatomic Pathology & Clinical Pathology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Ladenheim, MD is a Anatomic Pathology & Clinical Pathology Physician provider in New Haven, CT (NPI 1528520434).
Provider details
- NPI number
- 1528520434
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 77662 (CT)
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
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
546 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 185 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 109 | $28 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 64 | $80 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 55 | $41 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 44 | $35 |
| Pathology Examination of Tissue Using a Microscope, High Complexity88309 | 22 | $138 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-01
- Last updated
- 2024-05-16
- Certified
- 2024-05-16
Frequently asked questions
- What is Alexander Ladenheim's NPI number?
- Alexander Ladenheim's National Provider Identifier (NPI) is 1528520434, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Ladenheim's specialty?
- Alexander Ladenheim is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Ladenheim located?
- Alexander Ladenheim's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Alexander Ladenheim's phone number?
- The practice phone number listed in the NPPES registry for Alexander Ladenheim is (203) 688-4242.
- Does Alexander Ladenheim accept Medicare?
- Alexander Ladenheim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Ladenheim's NPI active?
- Yes — Alexander Ladenheim's NPI (1528520434) is active in the NPPES registry as of the last update on 2024-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.