Nathan Hartgrove, DO
NPI 1538420229 · Internal Medicine Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Hartgrove, DO is a Internal Medicine Physician provider in Chattanooga, TN (NPI 1538420229).
Provider details
- NPI number
- 1538420229
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- 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 tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 94 | 25 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 85 | 12 |
| Gabapentin | 79 | 19 |
| Semaglutidebrand: Ozempic | 74 | — |
| Bupropion Hclbrand: Bupropion Xl | 70 | — |
| Sertraline Hcl | 65 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-30
- Last updated
- 2018-08-10
Frequently asked questions
- What is Nathan Hartgrove's NPI number?
- Nathan Hartgrove's National Provider Identifier (NPI) is 1538420229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Hartgrove's specialty?
- Nathan Hartgrove is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Hartgrove located?
- Nathan Hartgrove's practice location on file with NPPES is 961 Spring Creek Rd Ste 300, Chattanooga, TN 37412.
- What is Nathan Hartgrove's phone number?
- The practice phone number listed in the NPPES registry for Nathan Hartgrove is (423) 893-9787.
- Does Nathan Hartgrove accept Medicare?
- Nathan Hartgrove is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Hartgrove's NPI active?
- Yes — Nathan Hartgrove's NPI (1538420229) is active in the NPPES registry as of the last update on 2018-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.