David Tillema, PMHNP
NPI 1821508425 · Psychiatric/Mental Health Nurse Practitioner · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Tillema, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Grand Rapids, MI (NPI 1821508425).
Provider details
- NPI number
- 1821508425
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Male
- Sole proprietor
- No
- License
- 4704297069 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Fluoxetine Hcl | 32 |
| Cariprazine Hclbrand: Vraylar | 17 |
| Bupropion Hclbrand: Bupropion Xl | 16 |
| Methylphenidate Hclbrand: Methylphenidate Er | 14 |
| Sertraline Hcl | 14 |
| Buspirone Hcl | 13 |
| Lithium Carbonate | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-10-09
- Last updated
- 2025-09-25
- Certified
- 2025-09-25
Frequently asked questions
- What is David Tillema's NPI number?
- David Tillema's National Provider Identifier (NPI) is 1821508425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Tillema's specialty?
- David Tillema is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is David Tillema located?
- David Tillema's practice location on file with NPPES is 2750 E Beltline Ave Ne Fl 3, Grand Rapids, MI 49525-8614.
- What is David Tillema's phone number?
- The practice phone number listed in the NPPES registry for David Tillema is (616) 447-5820.
- Does David Tillema accept Medicare?
- David Tillema is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Tillema's NPI active?
- Yes — David Tillema's NPI (1821508425) is active in the NPPES registry as of the last update on 2025-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.