William Rittmeyer, DO
NPI 1770088189 · Interventional Pain Medicine Physician · Libertyville, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Rittmeyer, DO is a Interventional Pain Medicine Physician provider in Libertyville, IL (NPI 1770088189).
Provider details
- NPI number
- 1770088189
- Entity type
- Individual
- Primary specialty
- Interventional Pain Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036.158666 (IL)
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
8 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
1,850 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 | 651 | $130 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 307 | $79 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance62323 | 188 | $101 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 116 | $174 |
| Injection of Substance Into Middle Or Upper Spine Canal Using Imaging Guidance62321 | 73 | $110 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 713 | 213 |
| Gabapentin | 441 | 103 |
| Tramadol Hcl | 372 | 109 |
| Celecoxib | 316 | 105 |
| Pregabalin | 263 | 89 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 255 | 63 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,392 across 49 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
Additional practice locations (1)
- 1750 W Harrison St Ste 720Chicago, IL 60612-3825Phone: (888) 352-7874
Registry dates
- Enumerated
- 2018-03-27
- Last updated
- 2025-05-22
- Certified
- 2025-05-22
Frequently asked questions
- What is William Rittmeyer's NPI number?
- William Rittmeyer's National Provider Identifier (NPI) is 1770088189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Rittmeyer's specialty?
- William Rittmeyer is listed in the NPPES registry with a primary specialty of Interventional Pain Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Rittmeyer located?
- William Rittmeyer's practice location on file with NPPES is 890 Garfield Ave Ste 103, Libertyville, IL 60048-3100.
- What is William Rittmeyer's phone number?
- The practice phone number listed in the NPPES registry for William Rittmeyer is (847) 279-0061.
- Does William Rittmeyer accept Medicare?
- William Rittmeyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Rittmeyer's NPI active?
- Yes — William Rittmeyer's NPI (1770088189) is active in the NPPES registry as of the last update on 2025-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.