Mark Mahacek, PSYD
NPI 1346330438 · Psychologist · Spring Lake, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mahacek, PSYD is a Psychologist provider in Spring Lake, MI (NPI 1346330438).
Provider details
- NPI number
- 1346330438
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MM008350 (MI)
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
19 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
846 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) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 254 | $130 |
| Psychiatric Diagnostic Evaluation90791 | 90 | $144 |
| Psychotherapy, 1 Hour90837 | 74 | $147 |
| Evaluation of Neuropsychological Test, First Hour96132 | 65 | $102 |
| Administration of Psychological Or Neuropsychological Test, First 30 Minutes96136 | 65 | $22 |
| Administration of Psychological Or Neuropsychological Test, Each Additional 30 Minutes96137 | 65 | $17 |
| Evaluation of Neuropsychological Test, Each Additional Hour |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-13
- Last updated
- 2023-10-05
- Certified
- 2023-10-05
Frequently asked questions
- What is Mark Mahacek's NPI number?
- Mark Mahacek's National Provider Identifier (NPI) is 1346330438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mahacek's specialty?
- Mark Mahacek is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Mahacek located?
- Mark Mahacek's practice location on file with NPPES is 19100 N Fruitport Rd, Spring Lake, MI 49456-1165.
- What is Mark Mahacek's phone number?
- The practice phone number listed in the NPPES registry for Mark Mahacek is (616) 842-2125.
- Does Mark Mahacek accept Medicare?
- Mark Mahacek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mahacek's NPI active?
- Yes — Mark Mahacek's NPI (1346330438) is active in the NPPES registry as of the last update on 2023-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.