Oak Street Health Physicians Group of Mississippi, LLC
NPI 1235754995 · Family Medicine Physician · Raymond, NH
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oak Street Health Physicians Group of Mississippi, LLC is a Family Medicine Physician organization in Raymond, NH (NPI 1235754995).
Provider details
- NPI number
- 1235754995
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mary Lyster, Physician(401) 699-3271
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
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 22 Prospect StNashua, NH 03060-3924Phone: (603) 883-1626Fax: (883) 953-1549
Registry dates
- Enumerated
- 2020-06-09
- Last updated
- 2026-03-11
- Certified
- 2026-03-11
Frequently asked questions
- What is Oak Street Health Physicians Group of Mississippi, LLC's NPI number?
- Oak Street Health Physicians Group of Mississippi, LLC's National Provider Identifier (NPI) is 1235754995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Oak Street Health Physicians Group of Mississippi, LLC?
- Oak Street Health Physicians Group of Mississippi, LLC is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Oak Street Health Physicians Group of Mississippi, LLC located?
- Oak Street Health Physicians Group of Mississippi, LLC's practice location on file with NPPES is 128 Route 27, Raymond, NH 03077-1230.
- What is Oak Street Health Physicians Group of Mississippi, LLC's phone number?
- The practice phone number listed in the NPPES registry for Oak Street Health Physicians Group of Mississippi, LLC is (603) 895-3351.
- Does Oak Street Health Physicians Group of Mississippi, LLC accept Medicare?
- Oak Street Health Physicians Group of Mississippi, LLC 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 Oak Street Health Physicians Group of Mississippi, LLC?
- The authorized official listed on Oak Street Health Physicians Group of Mississippi, LLC's NPPES record is Mary Lyster, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Oak Street Health Physicians Group of Mississippi, LLC's NPI active?
- Yes — Oak Street Health Physicians Group of Mississippi, LLC's NPI (1235754995) is active in the NPPES registry as of the last update on 2026-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.