Spiros Mitsopoulos, MD, PLLC
NPI 1891130845 · Internal Medicine Physician · Manchester, NH
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Spiros Mitsopoulos, MD, PLLC is a Internal Medicine Physician organization in Manchester, NH (NPI 1891130845).
Provider details
- NPI number
- 1891130845
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Spiros Mitsopoulos, Physician Owner(603) 663-8230
- License
- 7454 (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
13 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
- 2013-05-03
- Last updated
- 2014-09-24
Frequently asked questions
- What is Spiros Mitsopoulos, MD, PLLC's NPI number?
- Spiros Mitsopoulos, MD, PLLC's National Provider Identifier (NPI) is 1891130845, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Spiros Mitsopoulos, MD, PLLC?
- Spiros Mitsopoulos, MD, PLLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Spiros Mitsopoulos, MD, PLLC located?
- Spiros Mitsopoulos, MD, PLLC's practice location on file with NPPES is 445 Cypress St, Manchester, NH 03103-3600.
- What is Spiros Mitsopoulos, MD, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Spiros Mitsopoulos, MD, PLLC is (603) 663-8230.
- Does Spiros Mitsopoulos, MD, PLLC accept Medicare?
- Spiros Mitsopoulos, MD, PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Spiros Mitsopoulos, MD, PLLC?
- The authorized official listed on Spiros Mitsopoulos, MD, PLLC's NPPES record is Spiros Mitsopoulos, Physician Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Spiros Mitsopoulos, MD, PLLC's NPI active?
- Yes — Spiros Mitsopoulos, MD, PLLC's NPI (1891130845) is active in the NPPES registry as of the last update on 2014-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.