Mark Steenwyk, PSYD
NPI 1821322116 · Clinical Psychologist · Lafayette, IN
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Steenwyk, PSYD is a Clinical Psychologist provider in Lafayette, IN (NPI 1821322116).
Provider details
- NPI number
- 1821322116
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 20042336A (IN)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
228 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) |
|---|---|---|
| Group Psychotherapy90853 | 202 | $27 |
| Psychotherapy, 45 Minutes90834 | 26 | $99 |
Typical Medicare-allowed amounts for these services range $27–$99 (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
Registry dates
- Enumerated
- 2009-09-21
- Last updated
- 2009-09-21
Frequently asked questions
- What is Mark Steenwyk's NPI number?
- Mark Steenwyk's National Provider Identifier (NPI) is 1821322116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Steenwyk's specialty?
- Mark Steenwyk is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Steenwyk located?
- Mark Steenwyk's practice location on file with NPPES is 610 Main St, Lafayette, IN 47901-1451.
- What is Mark Steenwyk's phone number?
- The practice phone number listed in the NPPES registry for Mark Steenwyk is (765) 428-2249.
- Does Mark Steenwyk accept Medicare?
- Mark Steenwyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Steenwyk's NPI active?
- Yes — Mark Steenwyk's NPI (1821322116) is active in the NPPES registry as of the last update on 2009-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.