William Harkin, MD
NPI 1922684877 · Orthopaedic Surgery Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Harkin, MD is a Orthopaedic Surgery Physician provider in Chicago, IL (NPI 1922684877).
Provider details
- NPI number
- 1922684877
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$561 across 4 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
- 2021-03-22
- Last updated
- 2021-06-08
- Certified
- 2021-06-08
Frequently asked questions
- What is William Harkin's NPI number?
- William Harkin's National Provider Identifier (NPI) is 1922684877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Harkin's specialty?
- William Harkin is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Harkin located?
- William Harkin's practice location on file with NPPES is 1611 W Harrison St, Chicago, IL 60612-4861.
- What is William Harkin's phone number?
- The practice phone number listed in the NPPES registry for William Harkin is (916) 751-6517.
- Does William Harkin accept Medicare?
- William Harkin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Harkin's NPI active?
- Yes — William Harkin's NPI (1922684877) is active in the NPPES registry as of the last update on 2021-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.