Joy Underwood, MD
NPI 1164928040 · Internal Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joy Underwood, MD is a Internal Medicine Physician provider in Nashville, TN (NPI 1164928040).
Provider details
- NPI number
- 1164928040
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 24 |
| Clonazepam | 24 |
| Risperidone | 22 |
| Quetiapine Fumarate | 20 |
| Olanzapine | 19 |
| Lamotrigine | 17 |
| Escitalopram Oxalate | 16 |
| Fluoxetine Hcl | 16 |
| Sertraline Hcl | 16 |
| Clozapine | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-01
- Last updated
- 2021-06-15
- Certified
- 2021-06-15
Frequently asked questions
- What is Joy Underwood's NPI number?
- Joy Underwood's National Provider Identifier (NPI) is 1164928040, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joy Underwood's specialty?
- Joy Underwood is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joy Underwood located?
- Joy Underwood's practice location on file with NPPES is 4220 Harding Pike Ste 500, Nashville, TN 37205-2005.
- What is Joy Underwood's phone number?
- The practice phone number listed in the NPPES registry for Joy Underwood is (615) 284-2522.
- Does Joy Underwood accept Medicare?
- Joy Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joy Underwood's NPI active?
- Yes — Joy Underwood's NPI (1164928040) is active in the NPPES registry as of the last update on 2021-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.