Ralph Hermes, M.D.
NPI 1669032769 · Family Medicine Physician · Hinsdale, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralph Hermes, M.D. is a Family Medicine Physician provider in Hinsdale, IL (NPI 1669032769).
Provider details
- NPI number
- 1669032769
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036162218 (IL)
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 tenure28% of score
7 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
325 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 | 131 | $133 |
| 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 | 60 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 49 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 27 | $97 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $180 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 113 | 20 |
| Losartan Potassium | 106 | 20 |
| Levothyroxine Sodium | 73 | 23 |
| Rosuvastatin Calcium | 69 | 14 |
| Atorvastatin Calcium | 50 | 23 |
| Trazodone Hcl | 42 | — |
| Sertraline Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-19
- Last updated
- 2023-02-01
- Certified
- 2023-02-01
Frequently asked questions
- What is Ralph Hermes's NPI number?
- Ralph Hermes's National Provider Identifier (NPI) is 1669032769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralph Hermes's specialty?
- Ralph Hermes is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ralph Hermes located?
- Ralph Hermes's practice location on file with NPPES is 8 Salt Creek Ln Ste 301, Hinsdale, IL 60521-2903.
- What is Ralph Hermes's phone number?
- The practice phone number listed in the NPPES registry for Ralph Hermes is (331) 221-2550.
- Does Ralph Hermes accept Medicare?
- Ralph Hermes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralph Hermes's NPI active?
- Yes — Ralph Hermes's NPI (1669032769) is active in the NPPES registry as of the last update on 2023-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.