Stephen Rittmann, MD
NPI 1104857473 · Family Medicine Physician · Schaumburg, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Rittmann, MD is a Family Medicine Physician provider in Schaumburg, IL (NPI 1104857473).
Provider details
- NPI number
- 1104857473
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-055551 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,332 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 | 505 | $131 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 296 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 213 | $133 |
| Automated Urinalysis Test81003 | 121 | $2 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 67 | $15 |
| Administration of Influenza Virus VaccineG0008 | 37 | $34 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 133 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 568 | 163 |
| Levothyroxine Sodium | 333 | 85 |
| Amlodipine Besylate | 271 | 80 |
| Alprazolam | 255 | 45 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 230 | 36 |
| Metformin Hcl | 210 | 60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,777 across 149 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
- 2006-07-05
- Last updated
- 2021-04-06
- Certified
- 2021-04-06
Frequently asked questions
- What is Stephen Rittmann's NPI number?
- Stephen Rittmann's National Provider Identifier (NPI) is 1104857473, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Rittmann's specialty?
- Stephen Rittmann is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Rittmann located?
- Stephen Rittmann's practice location on file with NPPES is 361 W Golf Rd, Schaumburg, IL 60195-3607.
- What is Stephen Rittmann's phone number?
- The practice phone number listed in the NPPES registry for Stephen Rittmann is (847) 252-6050.
- Does Stephen Rittmann accept Medicare?
- Stephen Rittmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Rittmann's NPI active?
- Yes — Stephen Rittmann's NPI (1104857473) is active in the NPPES registry as of the last update on 2021-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.