Erin Horstman, M.D.
NPI 1578959961 · Clinical Pathology/Laboratory Medicine Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Horstman, M.D. is a Clinical Pathology/Laboratory Medicine Physician provider in New Haven, CT (NPI 1578959961).
Provider details
- NPI number
- 1578959961
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 71042 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
630 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) |
|---|---|---|
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 173 | $84 |
| Molecular Pathology Procedure; Physician Interpretation and ReportG0452 | 102 | $47 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 9 to 15 Markers88188 | 98 | $62 |
| Coagulation Function Screening Test With Interpretation and Report85390 | 81 | $36 |
| Blood Smear Interpretation By Physician With Written Report85060 | 55 | $24 |
| Blood Bank Physician Services for Cross Match And/Or Evaluation and Written Report86077 | 49 | $49 |
Practice location
Mailing address
Additional practice locations (1)
- 100 High Street, Buffalo General Medical CenterDept. of Surgery University at BuffaloBuffalo, NY 14203-2200Phone: (716) 859-7330
Registry dates
- Enumerated
- 2015-04-13
- Last updated
- 2025-05-19
- Certified
- 2025-05-19
Frequently asked questions
- What is Erin Horstman's NPI number?
- Erin Horstman's National Provider Identifier (NPI) is 1578959961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Horstman's specialty?
- Erin Horstman is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Horstman located?
- Erin Horstman's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Erin Horstman's phone number?
- The practice phone number listed in the NPPES registry for Erin Horstman is (203) 688-4242.
- Does Erin Horstman accept Medicare?
- Erin Horstman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Horstman's NPI active?
- Yes — Erin Horstman's NPI (1578959961) is active in the NPPES registry as of the last update on 2025-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.