Crystal Wittrock, APNP
NPI 1437870680 · Nurse Practitioner · Milwaukee, WI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Wittrock, APNP is a Nurse Practitioner provider in Milwaukee, WI (NPI 1437870680).
Provider details
- NPI number
- 1437870680
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APNP
- Sex
- Female
- Sole proprietor
- No
- License
- 13139 (WI)
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 tenure38% of score
3 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 42 | 24 |
| Metoprolol Tartrate | 40 | 25 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 35 | 34 |
| Metoprolol Succinate | 22 | 12 |
| Amiodarone Hcl | 20 | 19 |
| Furosemide | 19 | 19 |
| Tramadol Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-09-07
- Last updated
- 2024-10-01
- Certified
- 2024-10-01
Frequently asked questions
- What is Crystal Wittrock's NPI number?
- Crystal Wittrock's National Provider Identifier (NPI) is 1437870680, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Wittrock's specialty?
- Crystal Wittrock is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Crystal Wittrock located?
- Crystal Wittrock's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Crystal Wittrock's phone number?
- The practice phone number listed in the NPPES registry for Crystal Wittrock is (414) 805-8710.
- Does Crystal Wittrock accept Medicare?
- Crystal Wittrock is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Wittrock's NPI active?
- Yes — Crystal Wittrock's NPI (1437870680) is active in the NPPES registry as of the last update on 2024-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.