Kathy Crystal, NP
NPI 1841842192 · Gerontology Nurse Practitioner · Byron Center, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathy Crystal, NP is a Gerontology Nurse Practitioner provider in Byron Center, MI (NPI 1841842192).
Provider details
- NPI number
- 1841842192
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704271880 (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 tenure28% of score
6 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
121 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 44 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 42 | $66 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 19 | $148 |
| Advance Care Planning, First 30 Minutes99497 | 16 | $64 |
Typical Medicare-allowed amounts for these services range $64–$148 (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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 21 | — |
| Gabapentin | 21 | 11 |
| Potassium Chloride | 17 | — |
| Lamotrigine | 16 | — |
| Omeprazole | 16 | — |
| Levothyroxine Sodium | 14 | — |
| Lisinopril | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-07-16
- Last updated
- 2026-01-20
- Certified
- 2026-01-20
Frequently asked questions
- What is Kathy Crystal's NPI number?
- Kathy Crystal's National Provider Identifier (NPI) is 1841842192, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathy Crystal's specialty?
- Kathy Crystal is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathy Crystal located?
- Kathy Crystal's practice location on file with NPPES is 7751 Byron Center Ave Sw Ste C, Byron Center, MI 49315-8001.
- What is Kathy Crystal's phone number?
- The practice phone number listed in the NPPES registry for Kathy Crystal is (616) 267-7668.
- Does Kathy Crystal accept Medicare?
- Kathy Crystal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathy Crystal's NPI active?
- Yes — Kathy Crystal's NPI (1841842192) is active in the NPPES registry as of the last update on 2026-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.