Crystal Wittrock, APNP
Nurse Practitioner · Milwaukee, WI
Crystal Wittrock, APNP is a nurse practitioner with a practice address in Milwaukee, Wisconsin, and NPI 1437870680, issued on Sep 7, 2022. Check the license (Wisconsin 13139, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Crystal Wittrock
- Credential
- APNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 13139 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 805-8710
- Enumerated
- Sep 7, 2022
- Entity
- Type 1 · individual
Also registered at 9200 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shameem Aadam, RPHPharmacist1760755680
- Abubaker Abdalla, MDHospitalist Physician1194187617
- Sameem Abedin, MDInternal Medicine Physician1063641157
- Lolia Abibo, M.D.Internal Medicine Physician1912359795
- Haisam Abid, MBBSInternal Medicine Physician1578083184
- Faith Abodunrin, MDInternal Medicine Physician1437768769
Verify Crystal Wittrock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 13139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
75% fewer Medicare Part D claims than the average nurse practitioner in 2024
282 Medicare Part D claims for 95 beneficiaries, against an average of 1,144 among the 50,277 providers of this specialty who prescribed in Part D. 52 claims were for opioids.
Most prescribed
- Atorvastatin Calcium42 claims
- Metoprolol Tartrate40 claims
- Hydrocodone-Acetaminophen35 claims
- Metoprolol Succinate22 claims
- Amiodarone Hcl20 claims
- Furosemide19 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.
One hospital or facility affiliation
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
639 nurse practitioner records list a Milwaukee practice address
They are 639 of the 18,389 NPPES records with a Milwaukee practice address, and 3,463 nurse practitioner records in Wisconsin.
All 639 in Milwaukee → All 3,463 in Wisconsin → Every provider in Milwaukee →
Other nurse practitioner records in Wisconsin
- Caroline Aaberg, APNPMadison, WI1881384394
- Joyce Abbott, APNPOshkosh, WI1003824665
- Mohamed Abdelazim, APNPAppleton, WI1760266696
- Jade Abts, NPGreen Bay, WI1992293708
- Carol Adamczyk, MSNWauwatosa, WI1457502395
- Amanda Adams, NPMadison, WI1023366598
- Inez Adams, NPWest Allis, WI1255877544
- Leslie Adams, NPFitchburg, WI1053633115
- Nathan Adams, APNP, ACNP-BCFond Du Lac, WI1932608619
- Nina Adams, APNPMilwaukee, WI1780965418
Common questions
What is Crystal Wittrock, APNP's NPI number?
Crystal Wittrock, APNP's National Provider Identifier (NPI) is 1437870680, issued on Sep 7, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Crystal Wittrock, APNP located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 805-8710. Providers update this record themselves, so call before visiting.
How can I verify Crystal Wittrock, APNP's license?
NPPES lists Wisconsin license number 13139, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Crystal Wittrock, APNP prescribe under Medicare Part D?
In 2024, Crystal Wittrock, APNP had 282 Medicare Part D claims for 95 beneficiaries; the average among nurse practitioner prescribers was 1,144. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.