Jillian Grzegorczyk, RN
NPI 1942789805 · Family Nurse Practitioner · Muskegon, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jillian Grzegorczyk, RN is a Family Nurse Practitioner provider in Muskegon, MI (NPI 1942789805).
Provider details
- NPI number
- 1942789805
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 4704274790 (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 tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
252 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 176 | $64 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 76 | $102 |
Typical Medicare-allowed amounts for these services range $64–$102 (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.
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) | Beneficiaries |
|---|---|---|
| Spironolactone | 223 | 98 |
| Metoprolol Succinate | 179 | 83 |
| Empagliflozinbrand: Jardiance | 127 | 52 |
| Sacubitril/Valsartanbrand: Entresto | 100 | 37 |
| Furosemide | 99 | 59 |
| Dapagliflozin Propanediolbrand: Farxiga | 70 | 33 |
| Carvedilol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$348 across 18 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
Registry dates
- Enumerated
- 2018-08-11
- Last updated
- 2026-04-23
- Certified
- 2026-04-23
Frequently asked questions
- What is Jillian Grzegorczyk's NPI number?
- Jillian Grzegorczyk's National Provider Identifier (NPI) is 1942789805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jillian Grzegorczyk's specialty?
- Jillian Grzegorczyk is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jillian Grzegorczyk located?
- Jillian Grzegorczyk's practice location on file with NPPES is 2009 Holton Rd, Muskegon, MI 49445-1578.
- What is Jillian Grzegorczyk's phone number?
- The practice phone number listed in the NPPES registry for Jillian Grzegorczyk is (616) 935-3479.
- Does Jillian Grzegorczyk accept Medicare?
- Jillian Grzegorczyk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jillian Grzegorczyk's NPI active?
- Yes — Jillian Grzegorczyk's NPI (1942789805) is active in the NPPES registry as of the last update on 2026-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.