Ruth Diaz, M.D.
NPI 1801941281 · Psychiatry Physician · Ypsilanti, MI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Diaz, M.D. is a Psychiatry Physician provider in Ypsilanti, MI (NPI 1801941281).
Provider details
- NPI number
- 1801941281
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4301035476 (MI)
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
19 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
- 2007-01-24
- Last updated
- 2021-09-09
- Certified
- 2021-09-09
Frequently asked questions
- What is Ruth Diaz's NPI number?
- Ruth Diaz's National Provider Identifier (NPI) is 1801941281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Diaz's specialty?
- Ruth Diaz is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Diaz located?
- Ruth Diaz's practice location on file with NPPES is 4870 W Clark Rd, Ypsilanti, MI 48197-1104.
- What is Ruth Diaz's phone number?
- The practice phone number listed in the NPPES registry for Ruth Diaz is (734) 434-7260.
- Does Ruth Diaz accept Medicare?
- Ruth Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Diaz's NPI active?
- Yes — Ruth Diaz's NPI (1801941281) is active in the NPPES registry as of the last update on 2021-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.