Otto Walter, MD
NPI 1801942628 · Anatomic Pathology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Otto Walter, MD is a Anatomic Pathology Physician provider in Worcester, MA (NPI 1801942628).
Provider details
- NPI number
- 1801942628
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 239752 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
2,312 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 | 865 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 377 | $26 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 231 | $76 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 192 | $33 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 166 | $11 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 70 | $11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-26
- Last updated
- 2011-07-27
Frequently asked questions
- What is Otto Walter's NPI number?
- Otto Walter's National Provider Identifier (NPI) is 1801942628, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Otto Walter's specialty?
- Otto Walter is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Otto Walter located?
- Otto Walter's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Otto Walter's phone number?
- The practice phone number listed in the NPPES registry for Otto Walter is (508) 793-6100.
- Does Otto Walter accept Medicare?
- Otto Walter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Otto Walter's NPI active?
- Yes — Otto Walter's NPI (1801942628) is active in the NPPES registry as of the last update on 2011-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.