Mark Ritter, APRN, CRNA
NPI 1306430392 · Certified Registered Nurse Anesthetist · Chicago, IL
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ritter, APRN, CRNA is a Certified Registered Nurse Anesthetist provider in Chicago, IL (NPI 1306430392).
Provider details
- NPI number
- 1306430392
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN, CRNA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
54 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) |
|---|---|---|
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 16 | $204 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 14 | $108 |
| Anesthesia for Total Hip Replacement01214 | 13 | $215 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $81 |
Typical Medicare-allowed amounts for these services range $81–$215 (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.
Practice location
Mailing address
Additional practice locations (1)
- 5841 S Maryland AveChicago, IL 60637-1443Phone: (888) 824-0200
Registry dates
- Enumerated
- 2021-02-22
- Last updated
- 2025-02-12
- Certified
- 2025-02-12
Frequently asked questions
- What is Mark Ritter's NPI number?
- Mark Ritter's National Provider Identifier (NPI) is 1306430392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ritter's specialty?
- Mark Ritter is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Ritter located?
- Mark Ritter's practice location on file with NPPES is 251 E Huron St Ste 5-704, Chicago, IL 60611-2908.
- What is Mark Ritter's phone number?
- The practice phone number listed in the NPPES registry for Mark Ritter is (312) 926-8369.
- Does Mark Ritter accept Medicare?
- Mark Ritter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ritter's NPI active?
- Yes — Mark Ritter's NPI (1306430392) is active in the NPPES registry as of the last update on 2025-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.