Christopher Withers, D.O.
NPI 1942221114 · Internal Medicine Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Withers, D.O. is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1942221114).
Provider details
- NPI number
- 1942221114
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 45668-021 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
27 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 35 Minutes99232 | 27 | $69 |
Typical Medicare-allowed amounts for these services range $69–$69 (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 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 160 | 68 |
| Amlodipine Besylate | 119 | 62 |
| Metformin Hcl | 111 | 40 |
| Lisinopril | 89 | 42 |
| Tamsulosin Hcl | 73 | 34 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 72 | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-22
- Last updated
- 2020-02-14
- Certified
- 2020-02-14
Frequently asked questions
- What is Christopher Withers's NPI number?
- Christopher Withers's National Provider Identifier (NPI) is 1942221114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Withers's specialty?
- Christopher Withers is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Withers located?
- Christopher Withers's practice location on file with NPPES is 2555 N Martin Luther King Dr, Milwaukee, WI 53212-2709.
- What is Christopher Withers's phone number?
- The practice phone number listed in the NPPES registry for Christopher Withers is (414) 372-8080.
- Does Christopher Withers accept Medicare?
- Christopher Withers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Withers's NPI active?
- Yes — Christopher Withers's NPI (1942221114) is active in the NPPES registry as of the last update on 2020-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.