Robert Frank, MD
NPI 1659303899 · Family Medicine Physician · Mequon, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Frank, MD is a Family Medicine Physician provider in Mequon, WI (NPI 1659303899).
Provider details
- NPI number
- 1659303899
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 30390 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 126 | 68 |
| Amlodipine Besylate | 93 | 50 |
| Lisinopril | 67 | 38 |
| Hydrochlorothiazide | 65 | 36 |
| Losartan Potassium | 61 | 36 |
| Allopurinol | 57 | 25 |
| Simvastatin | 52 | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Robert Frank's NPI number?
- Robert Frank's National Provider Identifier (NPI) is 1659303899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Frank's specialty?
- Robert Frank is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Frank located?
- Robert Frank's practice location on file with NPPES is 12203 Corporate Pkwy, Mequon, WI 53092-3388.
- What is Robert Frank's phone number?
- The practice phone number listed in the NPPES registry for Robert Frank is (262) 387-8200.
- Does Robert Frank accept Medicare?
- Robert Frank is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Frank's NPI active?
- Yes — Robert Frank's NPI (1659303899) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.