Stephen Merfeld, M.D.
NPI 1619957230 · Ophthalmology Physician · Oshkosh, WI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Merfeld, M.D. is a Ophthalmology Physician provider in Oshkosh, WI (NPI 1619957230).
Provider details
- NPI number
- 1619957230
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 34248 (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
20 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
- 2006-01-19
- Last updated
- 2013-07-10
Frequently asked questions
- What is Stephen Merfeld's NPI number?
- Stephen Merfeld's National Provider Identifier (NPI) is 1619957230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Merfeld's specialty?
- Stephen Merfeld is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Merfeld located?
- Stephen Merfeld's practice location on file with NPPES is 1885 W Pointe Dr, Oshkosh, WI 54902-4174.
- What is Stephen Merfeld's phone number?
- The practice phone number listed in the NPPES registry for Stephen Merfeld is (920) 232-6550.
- Does Stephen Merfeld accept Medicare?
- Stephen Merfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Merfeld's NPI active?
- Yes — Stephen Merfeld's NPI (1619957230) is active in the NPPES registry as of the last update on 2013-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.