Jonathan Shaffer, D.O.
NPI 1437513173 · Internal Medicine Physician · Whitefish Bay, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Shaffer, D.O. is a Internal Medicine Physician provider in Whitefish Bay, WI (NPI 1437513173).
Provider details
- NPI number
- 1437513173
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-08
- Last updated
- 2019-05-24
Frequently asked questions
- What is Jonathan Shaffer's NPI number?
- Jonathan Shaffer's National Provider Identifier (NPI) is 1437513173, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Shaffer's specialty?
- Jonathan Shaffer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Shaffer located?
- Jonathan Shaffer's practice location on file with NPPES is 4600 N Cramer St, Whitefish Bay, WI 53211-1203.
- What is Jonathan Shaffer's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Shaffer is (614) 937-2615.
- Does Jonathan Shaffer accept Medicare?
- Jonathan Shaffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Shaffer's NPI active?
- Yes — Jonathan Shaffer's NPI (1437513173) is active in the NPPES registry as of the last update on 2019-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.