American Arthritis & Rheumatology Associates -Mi PLLC
NPI 1538655469 · Rheumatology Physician · Okemos, MI
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
American Arthritis & Rheumatology Associates -Mi PLLC is a Rheumatology Physician organization in Okemos, MI (NPI 1538655469).
Provider details
- NPI number
- 1538655469
- Entity type
- Organization
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Kathryn Garrett, Evp(561) 699-7101
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
7 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
- 2018-07-03
- Last updated
- 2021-12-01
- Certified
- 2021-12-01
Frequently asked questions
- What is American Arthritis & Rheumatology Associates -Mi PLLC's NPI number?
- American Arthritis & Rheumatology Associates -Mi PLLC's National Provider Identifier (NPI) is 1538655469, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is American Arthritis & Rheumatology Associates -Mi PLLC?
- American Arthritis & Rheumatology Associates -Mi PLLC is classified in the NPPES registry as Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is American Arthritis & Rheumatology Associates -Mi PLLC located?
- American Arthritis & Rheumatology Associates -Mi PLLC's practice location on file with NPPES is 1669 Hamilton Rd Ste 200, Okemos, MI 48864-1961.
- What is American Arthritis & Rheumatology Associates -Mi PLLC's phone number?
- The practice phone number listed in the NPPES registry for American Arthritis & Rheumatology Associates -Mi PLLC is (517) 993-6366.
- Does American Arthritis & Rheumatology Associates -Mi PLLC accept Medicare?
- American Arthritis & Rheumatology Associates -Mi 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 American Arthritis & Rheumatology Associates -Mi PLLC?
- The authorized official listed on American Arthritis & Rheumatology Associates -Mi PLLC's NPPES record is Kathryn Garrett, Evp. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is American Arthritis & Rheumatology Associates -Mi PLLC's NPI active?
- Yes — American Arthritis & Rheumatology Associates -Mi PLLC's NPI (1538655469) is active in the NPPES registry as of the last update on 2021-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.