Neil Markwith, M.D.
NPI 1982696647 · Internal Medicine Physician · Manchester, NH
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Neil Markwith, M.D. is a Internal Medicine Physician provider in Manchester, NH (NPI 1982696647).
Provider details
- NPI number
- 1982696647
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 5961 (NH)
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
- 2005-08-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Neil Markwith's NPI number?
- Neil Markwith's National Provider Identifier (NPI) is 1982696647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Neil Markwith's specialty?
- Neil Markwith is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Neil Markwith located?
- Neil Markwith's practice location on file with NPPES is 445 Cypress St, Manchester, NH 03103-3600.
- What is Neil Markwith's phone number?
- The practice phone number listed in the NPPES registry for Neil Markwith is (603) 669-9450.
- Does Neil Markwith accept Medicare?
- Neil Markwith is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Neil Markwith's NPI active?
- Yes — Neil Markwith's NPI (1982696647) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.