John Lang, CPO
NPI 1730373713 · Prosthetist · Marshfield, WI
John Lang, CPO is a Prosthetist provider in Marshfield, WI (NPI 1730373713).
Provider details
- NPI number
- 1730373713
- Entity type
- Individual
- Primary specialty
- ProsthetistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- CPO
- Sex
- Male
- Sole proprietor
- No
- License
- 1370 (PA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-31
- Last updated
- 2008-07-18
Frequently asked questions
- What is John Lang's NPI number?
- John Lang's National Provider Identifier (NPI) is 1730373713, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lang's specialty?
- John Lang is listed in the NPPES registry with a primary specialty of Prosthetist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Lang located?
- John Lang's practice location on file with NPPES is 1000 N Oak Ave, Marshfield, WI 54449-5703.
- What is John Lang's phone number?
- The practice phone number listed in the NPPES registry for John Lang is (715) 387-5511.
- Is John Lang's NPI active?
- Yes — John Lang's NPI (1730373713) is active in the NPPES registry as of the last update on 2008-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.