Ronald Glas, MD
NPI 1720075484 · Family Medicine Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Glas, MD is a Family Medicine Physician provider in Naperville, IL (NPI 1720075484).
Provider details
- NPI number
- 1720075484
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036098149 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,712 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 590 | $135 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 270 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 257 | $139 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 230 | $66 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 110 | $96 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 123 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 606 | 172 |
| Levothyroxine Sodium | 280 | 72 |
| Losartan Potassium | 274 | 75 |
| Rosuvastatin Calcium | 206 | 63 |
| Lisinopril | 190 | 52 |
| Amlodipine Besylate | 189 | 53 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-28
- Last updated
- 2021-02-23
- Certified
- 2021-02-23
Frequently asked questions
- What is Ronald Glas's NPI number?
- Ronald Glas's National Provider Identifier (NPI) is 1720075484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Glas's specialty?
- Ronald Glas is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Glas located?
- Ronald Glas's practice location on file with NPPES is 1247 Rickert Dr, Naperville, IL 60540-1008.
- What is Ronald Glas's phone number?
- The practice phone number listed in the NPPES registry for Ronald Glas is (630) 357-7979.
- Does Ronald Glas accept Medicare?
- Ronald Glas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Glas's NPI active?
- Yes — Ronald Glas's NPI (1720075484) is active in the NPPES registry as of the last update on 2021-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.