John Hamrick, DMD
NPI 1639210305 · Periodontics · Greenville, SC
John Hamrick, DMD is a Periodontics provider in Greenville, SC (NPI 1639210305).
Provider details
- NPI number
- 1639210305
- Entity type
- Individual
- Primary specialty
- PeriodonticsDental Providers
- Credential
- DMD
- Sex
- Male
- Sole proprietor
- No
- License
- 2496 (SC)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Chlorhexidine Gluconate | 470 | 249 |
| Amoxicillin | 275 | 184 |
| Ibuprofen | 137 | 114 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 119 | 100 |
| Methylprednisolone | 102 | 87 |
| Cephalexin | 26 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 25 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$208 across 7 records (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
- 2007-02-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Hamrick's NPI number?
- John Hamrick's National Provider Identifier (NPI) is 1639210305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hamrick's specialty?
- John Hamrick is listed in the NPPES registry with a primary specialty of Periodontics (Dental Providers).
- Where is John Hamrick located?
- John Hamrick's practice location on file with NPPES is 1 Charis Dr, Greenville, SC 29615-6615.
- What is John Hamrick's phone number?
- The practice phone number listed in the NPPES registry for John Hamrick is (864) 271-4330.
- Is John Hamrick's NPI active?
- Yes — John Hamrick's NPI (1639210305) 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.