Kathy Amber Crystal, NP
Gerontology Nurse Practitioner · Byron Center, MI
Kathy Amber Crystal, NP is a gerontology nurse practitioner with a practice address in Byron Center, Michigan, and NPI 1841842192, issued on Jul 16, 2019. Check the license (Michigan 4704271880, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathy Amber Crystal
- Credential
- NP
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License number
- 4704271880 MI
Self-reported in NPPES; status is on the state search - Practice location
- 7751 Byron Center Ave SW Ste C, Byron Center, MI 49315
- Phone
- (616) 267-7668
- Enumerated
- Jul 16, 2019
- Record last updated
- Jan 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20190816002345); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 409 in Michigan → Look up another NPI →
Also registered at 7751 Byron Center Ave SW Ste C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katelin Aris, NPGerontology Nurse Practitioner1730748609
- Alison Aubry, NPGerontology Nurse Practitioner1538536966
- Grayson Baker, NPGerontology Nurse Practitioner1144812561
- Michelle Barton, MDInternal Medicine Physician1649765942
- Cynthia Betterly, DNPGerontology Nurse Practitioner1508254426
- Carly Boss, AGPCNPGerontology Nurse Practitioner1487318606
Verify Kathy Amber Crystal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704271880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024
639 Medicare Part D claims for 65 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Gabapentin21 claims
- Trazodone Hcl21 claims
- Potassium Chloride17 claims
- Lamotrigine16 claims
- Omeprazole16 claims
- Levothyroxine Sodium14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Spectrum Health Primary Care PartnersGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathy Amber Crystal among 409 gerontology nurse practitioner records in Michigan
Kathy Amber Crystal, NP is one of 409 gerontology nurse practitioner records with a practice address in Michigan. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 45% of them.
- NPI issued2019 · 45% of these records are older, 45% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2019 · median 2019 among the 269 with a school on file
- Record last updated2026 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 gerontology nurse practitioner records list a practice address in Byron Center
They are 20 of the 317 NPPES records with a practice address in Byron Center, and 409 gerontology nurse practitioner records in Michigan.
All 409 in Michigan → Every provider in Byron Center → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Katelin Aris, NPByron Center, MI 493151730748609
- Alison Aubry, NPByron Center, MI 493151538536966
- Grayson Baker, NPByron Center, MI 493151144812561
- Cynthia Betterly, DNPByron Center, MI 493151508254426
- Carly Boss, AGPCNPByron Center, MI 493151487318606
- Laura Fischer, NPByron Center, MI 493151487308904
- Ashley Gavin, NPByron Center, MI 493151295373736
- Brenda GrahamByron Center, MI 493151114997624
Common questions
What is Kathy Amber Crystal, NP's NPI number?
Kathy Amber Crystal, NP's National Provider Identifier (NPI) is 1841842192, issued on Jul 16, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Kathy Amber Crystal, NP located?
The NPPES record lists a practice address at 7751 Byron Center Ave SW Ste C, Byron Center, MI, 49315. Phone: (616) 267-7668. Providers update this record themselves, so call before visiting.
How can I verify Kathy Amber Crystal, NP's license?
NPPES lists Michigan license number 4704271880, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Kathy Amber Crystal, NP prescribe under Medicare Part D?
In 2024, Kathy Amber Crystal, NP had 639 Medicare Part D claims for 65 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. Part D covers Medicare prescriptions only.
What is Kathy Amber Crystal, NP's MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.