Casey Sietsema, P.A.
NPI 1689000903 · Physician Assistant · Zeeland, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Casey Sietsema, P.A. is a Physician Assistant provider in Zeeland, MI (NPI 1689000903).
Provider details
- NPI number
- 1689000903
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5601006819 (MI)
Specialties & taxonomies
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 tenure38% of score
12 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-09-18
- Last updated
- 2026-01-16
- Certified
- 2026-01-16
Frequently asked questions
- What is Casey Sietsema's NPI number?
- Casey Sietsema's National Provider Identifier (NPI) is 1689000903, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Casey Sietsema's specialty?
- Casey Sietsema is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Casey Sietsema located?
- Casey Sietsema's practice location on file with NPPES is 8666 Maple Ln, Zeeland, MI 49464-9157.
- What is Casey Sietsema's phone number?
- The practice phone number listed in the NPPES registry for Casey Sietsema is (616) 283-8785.
- Does Casey Sietsema accept Medicare?
- Casey Sietsema is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Casey Sietsema's NPI active?
- Yes — Casey Sietsema's NPI (1689000903) is active in the NPPES registry as of the last update on 2026-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.