Graylynn Oatess, MD
NPI 1922843457 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Graylynn Oatess, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1922843457).
Provider details
- NPI number
- 1922843457
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 125.084927 (IL)
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
1 yr 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
- 2024-06-26
- Last updated
- 2024-06-26
- Certified
- 2024-06-26
Frequently asked questions
- What is Graylynn Oatess's NPI number?
- Graylynn Oatess's National Provider Identifier (NPI) is 1922843457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Graylynn Oatess's specialty?
- Graylynn Oatess is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Graylynn Oatess located?
- Graylynn Oatess's practice location on file with NPPES is 1620 W Harrison St, Chicago, IL 60612-3801.
- What is Graylynn Oatess's phone number?
- The practice phone number listed in the NPPES registry for Graylynn Oatess is (312) 942-5000.
- Does Graylynn Oatess accept Medicare?
- Graylynn Oatess is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Graylynn Oatess's NPI active?
- Yes — Graylynn Oatess's NPI (1922843457) is active in the NPPES registry as of the last update on 2024-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.