Liana Billings, MD, MMSC
NPI 1457528101 · Endocrinology, Diabetes & Metabolism Physician · Skokie, IL
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liana Billings, MD, MMSC is a Endocrinology, Diabetes & Metabolism Physician provider in Skokie, IL (NPI 1457528101).
Provider details
- NPI number
- 1457528101
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MMSC
- Sex
- Female
- Sole proprietor
- No
- License
- 235777 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
294 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 122 | $103 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 90 | $36 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 52 | $154 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 30 | $83 |
Typical Medicare-allowed amounts for these services range $36–$154 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 232 | 68 |
| Atorvastatin Calcium | 232 | 71 |
| Semaglutidebrand: Ozempic | 218 | 54 |
| Metformin Hclbrand: Metformin Hcl Er | 169 | 59 |
| Metformin Hcl | 153 | 45 |
| Rosuvastatin Calcium | 123 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41,530 across 22 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
- 2008-05-13
- Last updated
- 2021-02-19
- Certified
- 2021-02-19
Frequently asked questions
- What is Liana Billings's NPI number?
- Liana Billings's National Provider Identifier (NPI) is 1457528101, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liana Billings's specialty?
- Liana Billings is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Liana Billings located?
- Liana Billings's practice location on file with NPPES is 9977 Woods Dr, Skokie, IL 60077-1057.
- What is Liana Billings's phone number?
- The practice phone number listed in the NPPES registry for Liana Billings is (847) 663-8540.
- Does Liana Billings accept Medicare?
- Liana Billings is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Liana Billings's NPI active?
- Yes — Liana Billings's NPI (1457528101) is active in the NPPES registry as of the last update on 2021-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.