Maria Westerhoff, M.D.
NPI 1124318787 · Anatomic Pathology & Clinical Pathology Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Westerhoff, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Ann Arbor, MI (NPI 1124318787).
Provider details
- NPI number
- 1124318787
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036.124402 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 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
1,248 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 | 690 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 223 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 102 | $33 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 68 | $81 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 41 | $77 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 34 | $11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-15
- Last updated
- 2019-11-11
Frequently asked questions
- What is Maria Westerhoff's NPI number?
- Maria Westerhoff's National Provider Identifier (NPI) is 1124318787, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Westerhoff's specialty?
- Maria Westerhoff is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Westerhoff located?
- Maria Westerhoff's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Maria Westerhoff's phone number?
- The practice phone number listed in the NPPES registry for Maria Westerhoff is (734) 936-4000.
- Does Maria Westerhoff accept Medicare?
- Maria Westerhoff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Westerhoff's NPI active?
- Yes — Maria Westerhoff's NPI (1124318787) is active in the NPPES registry as of the last update on 2019-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.