John Hemmer, M.D
NPI 1518958784 · Orthopaedic Surgery Physician · Gainesville, GA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hemmer, M.D is a Orthopaedic Surgery Physician provider in Gainesville, GA (NPI 1518958784).
Provider details
- NPI number
- 1518958784
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 014917 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
626 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 231 | $84 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 113 | $119 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 60 | $36 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 41 | $67 |
| X-Ray of Both Hips, 2 Views73521 | 36 | $37 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 212 | 89 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 135 | 41 |
| Celecoxib | 118 | 46 |
| Tramadol Hcl | 109 | 55 |
| Prednisone | 94 | 83 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 62 | 14 |
| Methocarbamol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40 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
- 2005-11-04
- Last updated
- 2023-09-28
- Certified
- 2023-09-28
Frequently asked questions
- What is John Hemmer's NPI number?
- John Hemmer's National Provider Identifier (NPI) is 1518958784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hemmer's specialty?
- John Hemmer is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Hemmer located?
- John Hemmer's practice location on file with NPPES is 1240 Jesse Jewell Pkwy Se, Gainesville, GA 30501-3862.
- What is John Hemmer's phone number?
- The practice phone number listed in the NPPES registry for John Hemmer is (770) 532-7202.
- Does John Hemmer accept Medicare?
- John Hemmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hemmer's NPI active?
- Yes — John Hemmer's NPI (1518958784) is active in the NPPES registry as of the last update on 2023-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.