Jonathan Simmons, DO
NPI 1154317857 · Critical Care Medicine (Internal Medicine) Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Simmons, DO is a Critical Care Medicine (Internal Medicine) Physician provider in Iowa City, IA (NPI 1154317857).
Provider details
- NPI number
- 1154317857
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 3413 (IA)
Specialties & taxonomies
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
20 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
609 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 272 | $109 |
| Critical Care, First 30-74 Minutes99291 | 240 | $194 |
| Management of Oxygen Chamber Therapy99183 | 59 | $96 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 38 | $73 |
Typical Medicare-allowed amounts for these services range $73–$194 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
- 2005-09-27
- Last updated
- 2007-12-18
Frequently asked questions
- What is Jonathan Simmons's NPI number?
- Jonathan Simmons's National Provider Identifier (NPI) is 1154317857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Simmons's specialty?
- Jonathan Simmons is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Simmons located?
- Jonathan Simmons's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Jonathan Simmons's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Simmons is (319) 353-7756.
- Does Jonathan Simmons accept Medicare?
- Jonathan Simmons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Simmons's NPI active?
- Yes — Jonathan Simmons's NPI (1154317857) is active in the NPPES registry as of the last update on 2007-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.