Adam Sonabend Worthalter, M.D.
NPI 1023261138 · Neurological Surgery Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Adam Sonabend Worthalter, M.D. is a Neurological Surgery Physician provider in Chicago, IL (NPI 1023261138).
Provider details
- NPI number
- 1023261138
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036143155 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
159 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 49 | $97 |
| Computer-Assisted Radiosurgery of Simple Growth of Brain, Each Additional Growth61797 | 39 | $274 |
| Computer-Assisted Procedure Inside Brain61781 | 18 | $293 |
| Computer-Assisted Radiosurgery of Simple Growth of Brain, First Growth61796 | 18 | $1,221 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 12 | $238 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$53 across 1 record (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
Additional practice locations (1)
- 710 W 168th StNi-426New York, NY 10032-3726Phone: (212) 305-8280
Registry dates
- Enumerated
- 2008-11-03
- Last updated
- 2022-07-21
Frequently asked questions
- What is Adam Sonabend Worthalter's NPI number?
- Adam Sonabend Worthalter's National Provider Identifier (NPI) is 1023261138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Adam Sonabend Worthalter's specialty?
- Adam Sonabend Worthalter is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Adam Sonabend Worthalter located?
- Adam Sonabend Worthalter's practice location on file with NPPES is 675 N Saint Clair St Ste 21-100, Chicago, IL 60611-5970.
- What is Adam Sonabend Worthalter's phone number?
- The practice phone number listed in the NPPES registry for Adam Sonabend Worthalter is (312) 695-0990.
- Does Adam Sonabend Worthalter accept Medicare?
- Adam Sonabend Worthalter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Adam Sonabend Worthalter's NPI active?
- Yes — Adam Sonabend Worthalter's NPI (1023261138) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.