Matthew Stack, PA C
NPI 1033108667 · Physician Assistant · Ithaca, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Stack, PA C is a Physician Assistant provider in Ithaca, MI (NPI 1033108667).
Provider details
- NPI number
- 1033108667
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA C
- Sex
- Male
- Sole proprietor
- No
- License
- 6301007939 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Behavioral Health & Social Service Providers
- Medical Physician Assistant363AM0700X
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Mirtazapine | 33 |
| Quetiapine Fumarate | 27 |
| Divalproex Sodium | 25 |
| Paliperidonebrand: Paliperidone Er | 25 |
| Olanzapine | 25 |
| Aripiprazole | 22 |
| Duloxetine Hcl | 22 |
| Trazodone Hcl | 21 |
| Paliperidone Palmitatebrand: Invega Sustenna | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40 across 2 records (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
Additional practice locations (1)
- 1040 W Bristol RdFlint, MI 48507-5516Phone: (810) 257-3705Fax: (989) 629-8145
Registry dates
- Enumerated
- 2005-10-17
- Last updated
- 2026-02-05
- Certified
- 2026-02-05
Frequently asked questions
- What is Matthew Stack's NPI number?
- Matthew Stack's National Provider Identifier (NPI) is 1033108667, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Stack's specialty?
- Matthew Stack is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Stack located?
- Matthew Stack's practice location on file with NPPES is 121 N Pine River St, Ithaca, MI 48847-1039.
- What is Matthew Stack's phone number?
- The practice phone number listed in the NPPES registry for Matthew Stack is (989) 287-0662.
- Does Matthew Stack accept Medicare?
- Matthew Stack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Stack's NPI active?
- Yes — Matthew Stack's NPI (1033108667) is active in the NPPES registry as of the last update on 2026-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.