Robert Willim, M.D.
NPI 1699196097 · Anatomic Pathology & Clinical Pathology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Willim, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Boston, MA (NPI 1699196097).
Provider details
- NPI number
- 1699196097
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 258029 (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
12 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
1,178 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 476 | $29 |
| Flow Cytometry Technique for Dna Or Cell Analysis, 16 Or More Markers88189 | 168 | $86 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 95 | $36 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 91 | $38 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 72 | $12 |
| Bone Marrow, Smear Interpretation85097 | 69 | $50 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-01-02
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Robert Willim's NPI number?
- Robert Willim's National Provider Identifier (NPI) is 1699196097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Willim's specialty?
- Robert Willim is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Willim located?
- Robert Willim's practice location on file with NPPES is 330 Brookline Ave, Boston, MA 02215-5400.
- What is Robert Willim's phone number?
- The practice phone number listed in the NPPES registry for Robert Willim is (617) 667-4344.
- Does Robert Willim accept Medicare?
- Robert Willim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Willim's NPI active?
- Yes — Robert Willim's NPI (1699196097) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.