Nancy Sillin, LCSW
NPI 1841740966 · Clinical Social Worker · Glenview, IL
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Sillin, LCSW is a Clinical Social Worker provider in Glenview, IL (NPI 1841740966).
Provider details
- NPI number
- 1841740966
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 149.012214 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 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
204 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) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 204 | $110 |
Typical Medicare-allowed amounts for these services range $110–$110 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-10-13
- Last updated
- 2016-10-13
Frequently asked questions
- What is Nancy Sillin's NPI number?
- Nancy Sillin's National Provider Identifier (NPI) is 1841740966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Sillin's specialty?
- Nancy Sillin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Nancy Sillin located?
- Nancy Sillin's practice location on file with NPPES is 920 Windsor Rd, Glenview, IL 60025-3131.
- What is Nancy Sillin's phone number?
- The practice phone number listed in the NPPES registry for Nancy Sillin is (847) 729-5472.
- Does Nancy Sillin accept Medicare?
- Nancy Sillin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Sillin's NPI active?
- Yes — Nancy Sillin's NPI (1841740966) is active in the NPPES registry as of the last update on 2016-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.