William Porter, M.D.
NPI 1336382720 · Anatomic Pathology & Clinical Pathology Physician · Arlington Heights, IL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Porter, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Arlington Heights, IL (NPI 1336382720).
Provider details
- NPI number
- 1336382720
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036135864 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,448 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 2,338 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 506 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 317 | $34 |
| Protein Measurement, Serum84165 | 287 | $18 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 256 | $12 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 196 | $79 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$34 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-14
- Last updated
- 2014-07-09
Frequently asked questions
- What is William Porter's NPI number?
- William Porter's National Provider Identifier (NPI) is 1336382720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Porter's specialty?
- William Porter is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is William Porter located?
- William Porter's practice location on file with NPPES is 800 W Central Rd, Arlington Heights, IL 60005-2349.
- What is William Porter's phone number?
- The practice phone number listed in the NPPES registry for William Porter is (847) 618-6150.
- Does William Porter accept Medicare?
- William Porter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Porter's NPI active?
- Yes — William Porter's NPI (1336382720) is active in the NPPES registry as of the last update on 2014-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.