IndividualActive
William Marsh, MD
NPI 1568422343 · Ophthalmology Physician · Wolfeboro, NH
William Marsh, MD is a Ophthalmology Physician provider in Wolfeboro, NH (NPI 1568422343).
Provider details
- NPI number
- 1568422343
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 7228 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
10 Center Street
Wolfeboro, NH 03894
Phone: (603) 569-1550
Street-level locationGet directions
Mailing address
742 Pleasant Valley Rd
Wolfeboro, NH 03894-7120
Registry dates
- Enumerated
- 2006-03-24
- Last updated
- 2010-06-25
Frequently asked questions
- What is William Marsh's NPI number?
- William Marsh's National Provider Identifier (NPI) is 1568422343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Marsh's specialty?
- William Marsh is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is William Marsh located?
- William Marsh's practice location on file with NPPES is 10 Center Street, Wolfeboro, NH 03894.
- What is William Marsh's phone number?
- The practice phone number listed in the NPPES registry for William Marsh is (603) 569-1550.
- Is William Marsh's NPI active?
- Yes — William Marsh's NPI (1568422343) is active in the NPPES registry as of the last update on 2010-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.