Monica Thornhill-Joynes, MD
NPI 1548370638 · Nephrology Physician · Montebello, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Monica Thornhill-Joynes, MD is a Nephrology Physician provider in Montebello, CA (NPI 1548370638).
Provider details
- NPI number
- 1548370638
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A34067 (CA)
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
- 2006-08-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Monica Thornhill-Joynes's NPI number?
- Monica Thornhill-Joynes's National Provider Identifier (NPI) is 1548370638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Thornhill-Joynes's specialty?
- Monica Thornhill-Joynes is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Monica Thornhill-Joynes located?
- Monica Thornhill-Joynes's practice location on file with NPPES is 101 E Beverly Blvd, Montebello, CA 90640-4300.
- What is Monica Thornhill-Joynes's phone number?
- The practice phone number listed in the NPPES registry for Monica Thornhill-Joynes is (323) 722-7418.
- Does Monica Thornhill-Joynes accept Medicare?
- Monica Thornhill-Joynes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Monica Thornhill-Joynes's NPI active?
- Yes — Monica Thornhill-Joynes's NPI (1548370638) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.