Douglas Steenblock, M.D., PSYCHIATRIST
NPI 1104891191 · Psychiatry Physician · Marshalltown, IA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Steenblock, M.D., PSYCHIATRIST is a Psychiatry Physician provider in Marshalltown, IA (NPI 1104891191).
Provider details
- NPI number
- 1104891191
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PSYCHIATRIST
- Sex
- Male
- Sole proprietor
- No
- License
- 30667 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
259 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $117 |
| Telehealth Originating Site Facility FeeQ3014 | 46 | $29 |
| Assessment of Emotional Or Behavioral Problems96127 | 43 | $4 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 12 | $184 |
Typical Medicare-allowed amounts for these services range $4–$184 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 626 | 57 |
| Trazodone Hcl | 467 | 71 |
| Sertraline Hcl | 370 | 51 |
| Risperidone | 370 | 27 |
| Lorazepam | 335 | 62 |
| Mirtazapine | 314 | 51 |
| Clonazepam | 312 | 35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-22
- Last updated
- 2026-04-16
- Certified
- 2026-04-16
Frequently asked questions
- What is Douglas Steenblock's NPI number?
- Douglas Steenblock's National Provider Identifier (NPI) is 1104891191, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Steenblock's specialty?
- Douglas Steenblock is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Steenblock located?
- Douglas Steenblock's practice location on file with NPPES is 1301 Summit St, Marshalltown, IA 50158-5484.
- What is Douglas Steenblock's phone number?
- The practice phone number listed in the NPPES registry for Douglas Steenblock is (641) 752-1501.
- Does Douglas Steenblock accept Medicare?
- Douglas Steenblock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Steenblock's NPI active?
- Yes — Douglas Steenblock's NPI (1104891191) is active in the NPPES registry as of the last update on 2026-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.