Medicare Enrolled
Dr. John Hemphill, M.D.
Neurology with Special Qualifications in Child Neurology Physician · Savannah, GA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Speaking/Promotional
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Hemphill from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Hemphill
Dr. John Hemphill is a neurology with special qualifications in child neurology physician in Savannah, GA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Hemphill performed 68,260 Medicare services across 1,723 unique beneficiaries.
Between the years covered by Open Payments, Dr. Hemphill received a total of $1,965,357 from 96 pharmaceutical and/or device companies across 3690 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology with special qualifications in child neurology physician. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Hemphill is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 14% volume in GA
$1,965,357 industry payments
Medicare Practice Summary
Medicare Utilization ↗68,260
Medicare services
Top 14% in GA for neurology with special qualifications in child neurology physician
1,723
Unique beneficiaries
$12
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~3,413 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
28,085 | $5 | $10 |
| Botox injection (Xeomin), per unit An injection of incobotulinumtoxin A, a botulinum toxin type A product, administered in a quantity of one unit. |
14,515 | $4 | $12 |
| Injection, eptinezumab-jjmr, 1 mg | 12,300 | $13 | $52 |
| Ocrelizumab infusion (Ocrevus) for MS | 7,200 | $47 | $162 |
| MRI contrast dye injection (gadobutrol) | 3,755 | $0 | $8 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
488 | $79 | $475 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
348 | $50 | $250 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
248 | $45 | $123 |
| Bilateral facial and neck nerve muscle paralysis injection Injection of a chemical agent to paralyze muscles in the face and neck on both sides. |
143 | $99 | $441 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
104 | $115 | $482 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
86 | $43 | $210 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
84 | $0 | $10 |
| MRI scan of brain, without contrast A magnetic resonance imaging test of the brain that does not use contrast dye. This procedure creates detailed images of the brain's structure using magnetic fields and radio waves. |
71 | $86 | $1,250 |
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
69 | $31 | $100 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
67 | $11 | $68 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
66 | $3 | $76 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 58 | $54 | $211 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of the arm or leg using a needle electrode. It helps evaluate the health of muscles and the nerve cells that control them. |
50 | $67 | $350 |
| Limited needle EMG of arm or leg muscles A test that measures the electrical activity in specific muscles of the arm or leg using a needle electrode. This limited study evaluates muscle function in a targeted area. |
49 | $41 | $167 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
46 | $117 | $525 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
44 | $27 | $126 |
| Nerve conduction studies, 7-8 tests A series of 7 to 8 nerve conduction tests to evaluate how well nerves are sending signals to muscles. |
41 | $124 | $587 |
| New patient office visit, complex (60-74 min) | 39 | $133 | $608 |
| MRI of brain with and without contrast An MRI scan of the brain using contrast dye both before and after administration to provide detailed images of brain structures. |
38 | $112 | $1,424 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
35 | $92 | $600 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
32 | $1 | $25 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
26 | $20 | $130 |
| Punch biopsy of additional skin growth A small circular tool is used to remove a sample of an extra skin growth for laboratory examination. |
24 | $43 | $174 |
| MRI of upper spine with and without contrast An MRI scan of the upper spinal canal performed both before and after the administration of contrast dye to enhance image detail. |
24 | $158 | $1,431 |
| MRI of upper spine without contrast An MRI scan of the upper spinal canal that does not use contrast dye. This imaging test uses magnetic fields and radio waves to create detailed pictures of the spine. |
21 | $73 | $1,205 |
| Nerve conduction studies, 5-6 tests A series of 5 to 6 tests that measure how well nerves send electrical signals. The procedure evaluates nerve function and helps identify damage or dysfunction. |
21 | $87 | $579 |
| Complex chronic care management, first 60 minutes This service involves clinical staff time directed by a healthcare professional to manage two or more chronic conditions over a calendar month. It covers the first 60 minutes of this coordinated care effort. |
17 | $85 | $263 |
| Additional chronic care management time, 60 minutes This service covers an additional 60 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions, billed per calendar month. |
17 | $48 | $130 |
| Punch biopsy of first skin growth A small, circular piece of skin is removed from a skin growth using a circular blade. The sample is then sent to a laboratory for examination. |
13 | $91 | $353 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
13 | $1 | $15 |
| Awake and drowsy EEG A test that records electrical activity in the brain while the patient is awake and drowsy. |
12 | $271 | $1,016 |
| EEG, extended monitoring A test that records electrical activity in the brain while the patient is both awake and asleep. |
11 | $269 | $1,700 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
10.8% high complexity
86.9% medium
2.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$1,965,357
Total received (2018-2024)
Avg $280,765/year across 7 years
Top 3% in GA for neurology with special qualifications in child neurology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
96
Companies
3,690
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,820,414 (92.6%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$109,940 (5.6%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$35,003 (1.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$385,224
2023
$257,079
2022
$267,103
2021
$223,080
2020
$147,868
2019
$325,933
2018
$359,070
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Eisai Inc.
$85,733
ARGENX US, INC.
$63,627
EMD Serono, Inc.
$52,302
Alexion Pharmaceuticals, Inc.
$50,581
Amgen Inc.
$48,556
TG Therapeutics, Inc.
$26,035
ABBVIE INC.
$20,533
E.R. Squibb & Sons, L.L.C.
$10,450
UCB, Inc.
$10,355
Genentech USA, Inc.
$7,154
Vanda Pharmaceuticals Inc.
$5,331
Janssen Scientific Affairs, LLC
$1,362
Celgene Corporation
$342
Axsome Therapeutics, Inc.
$263
PFIZER INC.
$247
Biogen, Inc.
$243
Lundbeck LLC
$243
Mallinckrodt Hospital Products Inc.
$176
SK Life Science, Inc.
$162
Neurocrine Biosciences, Inc.
$146
Teva Pharmaceuticals USA, Inc.
$144
Neurelis, Inc.
$142
CATALYST PHARMACEUTICALS, INC.
$124
GENZYME CORPORATION
$110
CSL Behring
$82
Ipsen Biopharmaceuticals, Inc
$76
JAZZ PHARMACEUTICALS INC.
$76
Sumitomo Pharma America, Inc.
$73
ACADIA Pharmaceuticals Inc
$53
AstraZeneca Pharmaceuticals LP
$52
Otsuka America Pharmaceutical, Inc.
$51
Grifols USA, LLC
$45
LivaNova USA, Inc.
$45
SCILEX PHARMACEUTICALS INC.
$37
Lilly USA, LLC
$31
ANI Pharmaceuticals, Inc.
$30
HARMONY BIOSCIENCES LLC
$24
REVANCE THERAPEUTICS, INC.
$22
Alnylam Pharmaceuticals Inc.
$21
Takeda Pharmaceuticals U.S.A., Inc.
$21
MITSUBISHI TANABE PHARMA AMERICA, INC.
$21
Averitas Pharma Inc.
$19
Merz Pharmaceuticals, LLC
$19
BANNER LIFE SCIENCES, LLC
$19
Boston Scientific Corporation
$16
Marinus Pharmaceuticals, Inc.
$16
InSightec,Inc
$14
Top 3 companies account for 52.3% of 2024 payments
All-time payments by company (2018-2024) ›
EMD Serono, Inc.
$249,364
Amgen Inc.
$190,448
GENZYME CORPORATION
$160,797
Eisai Inc.
$148,541
Biogen, Inc.
$139,637
Alexion Pharmaceuticals, Inc.
$130,823
Horizon Therapeutics plc
$120,377
ABBVIE INC.
$83,562
Genentech USA, Inc.
$79,035
Teva Pharmaceuticals USA, Inc.
$72,730
Allergan, Inc.
$70,670
ARGENX US, INC.
$63,955
Celgene Corporation
$53,135
Novartis Pharmaceuticals Corporation
$52,959
EISAI INC.
$48,302
E.R. Squibb & Sons, L.L.C.
$37,610
Allergan Inc.
$36,653
Lundbeck LLC
$36,231
TG Therapeutics, Inc.
$26,285
IMPEL PHARMACEUTICALS INC.
$21,032
AbbVie Inc.
$19,621
UCB, Inc.
$16,751
Biohaven Pharmaceuticals, Inc.
$15,741
SANOFI-AVENTIS U.S. LLC
$15,071
Merz North America, Inc.
$13,674
Acorda Therapeutics, Inc
$9,678
Sunovion Pharmaceuticals Inc.
$8,545
Biohaven Pharmaceutical Holding Company Ltd.
$7,548
Genentech, Inc.
$6,998
TG THERAPEUTICS, INC.
$6,508
SK Life Science, Inc.
$5,380
Vanda Pharmaceuticals Inc.
$5,331
LivaNova USA, Inc.
$1,649
Janssen Scientific Affairs, LLC
$1,362
PFIZER INC.
$728
Supernus Pharmaceuticals, Inc.
$725
SANOFI US SERVICES INC.
$622
Mallinckrodt Hospital Products Inc.
$611
Ipsen Biopharmaceuticals, Inc
$466
Kyowa Kirin, Inc.
$448
Lilly USA, LLC
$390
Neurocrine Biosciences, Inc.
$336
Neurelis, Inc.
$328
JAZZ PHARMACEUTICALS INC.
$325
Janssen Pharmaceuticals, Inc
$323
CSL Behring
$301
Greenwich Biosciences, Inc.
$272
Axsome Therapeutics, Inc.
$263
Sumitomo Pharma America, Inc.
$204
Mallinckrodt LLC
$203
Avanir Pharmaceuticals, Inc.
$193
ACADIA Pharmaceuticals Inc
$166
Otsuka America Pharmaceutical, Inc.
$150
CATALYST PHARMACEUTICALS, INC.
$138
Promius Pharma LLC
$132
Upsher-Smith Laboratories LLC
$127
Mallinckrodt Enterprises LLC
$124
Octapharma USA, Inc.
$115
Scilex Pharmaceuticals Inc.
$109
Merz Pharmaceuticals, LLC
$108
MITSUBISHI TANABE PHARMA AMERICA, INC.
$107
Harmony Biosciences LLC
$95
Mitsubishi Tanabe Pharma America, Inc.
$94
HOSPIRA, INC.
$72
Averitas Pharma Inc.
$71
ANI Pharmaceuticals, Inc.
$71
Grifols USA, LLC
$70
Alnylam Pharmaceuticals Inc.
$65
AstraZeneca Pharmaceuticals LP
$52
Boston Scientific Corporation
$49
AQUESTIVE THERAPEUTICS, INC.
$46
Assertio Therapeutics, Inc.
$44
Corium, LLC
$42
HARMONY BIOSCIENCES LLC
$42
Sarepta Therapeutics, Inc.
$39
Avion Pharmaceuticals
$39
US WorldMeds, LLC
$38
AveXis
$37
SCILEX PHARMACEUTICALS INC.
$37
Bausch Health US, LLC
$34
Catalyst Pharmaceuticals, Inc.
$33
Medtronic Vascular, Inc.
$26
Amylyx Pharmaceuticals, Inc.
$23
REVANCE THERAPEUTICS, INC.
$22
Almatica Pharma LLC
$21
Takeda Pharmaceuticals U.S.A., Inc.
$21
Jazz Pharmaceuticals Inc.
$19
Akcea Therapeutics, Inc.
$19
BANNER LIFE SCIENCES, LLC
$19
AbbVie, Inc.
$18
Marinus Pharmaceuticals, Inc.
$16
Novartis Gene Therapies, Inc. (fka AveXis, Inc.)
$14
InSightec,Inc
$14
Medtronic, Inc.
$12
Neos Therapeutics, LP
$12
ASSERTIO THERAPEUTICS, Inc.
$12
Top 3 companies account for 30.6% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ADUHELM · AIMOVIG · AJOVY · AMPYRA · AMVUTTRA · AMYVID · APOKYN · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Adlarity · Adzenys XR-ODT · Aimovig · Austedo XR · Azstarys · BAFIERTAM · BOTOX · BOTOX - NEUROLOGY · BOTOX COSMETIC · BOTOX THERAPEUTIC · BRIUMVI · Briviact · CAMBIA · COPAXONE · Cambia · DAXXIFY · DAYBUE · DISEASE STATE · DUOPA · DYSPORT · Dhivy · Duopa · Dysport · ELYXYB - CELECOXIB · EMGALITY · EPIDIOLEX · Epidiolex · Evrysdi · Exablate · Exondys 51 · FIRDAPSE · FYCOMPA · Fintepla · Fycompa · GILENYA · GRALISE · Gamunex-C · Gralise · HYQVIA · Hizentra · INBRIJA · INGREZZA · INVEGA SUSTENNA · KESIMPTA · KISUNLA · KYNMOBI · LEMTRADA · LINQ II · LYRICA · Leqembi · MAVENCLAD · MAYZENT · MIGRANAL · Mavenclad · NAMZARIC · NAPRELAN · NO PRODUCT DISCUSSED · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Nayzilam · Nourianz · Nuedexta · OCREVUS · OCTAGAM IMMUNE GLOBULIN (HUMAN) · ONFI · ONPATTRO · OXTELLAR XR · Ocrevus · Ongentys · Ozanimod · PANZYGA · PLEGRIDY · POMPE - DISEASE · PONVORY · PURIFIED CORTROPHIN GEL · Ponvory · QUDEXY XR Topiramate Extended Release Capsules · QULIPTA · QUTENZA · RADICAVA · RELYVRIO · REXULTI · REYVOW · Radicava · Rebif · Reveal LINQ · Rystiggo · SKYCLARYS · SOLIRIS · SPINRAZA · SYMPAZAN · Soliris · TECFIDERA · TEGSEDI · TOSYMRA SUMATRIPTAN NASAL SPRAY · TROKENDI XR · TYSABRI · Trudhesa · UBRELVY · ULTOMIRIS · UPLIZNA · VALTOCO · VIGADRONE (vigabatrin) for Oral Solution · VNS THERAPY SENTIVA MODEL 1000 GENERATOR · VNS Therapy · VUMERITY · VYALEV · VYEPTI · VYVGART · VYVGART HYTRULO · Vimpat · WAINUA · WAKIX · WATCHMAN FLX · Wakix · Wolverine Coronary Cutting Balloon · XCOPRI · XEOMIN · XYREM · XYWAV · Xadago · Xeomin · ZEMBRACE SYMTOUCH · ZEPOSIA · ZOLGENSMA · ZTALMY · ZTLido · Zembrace
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (93%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in neurology with special qualifications in child neurology physician and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 3% for neurology with special qualifications in child neurology physician in GA.
Geographic Context
Neurology with special qualifications in child neurology physicians within 10 mi
3
Per 100K population
1.0
County median income
$69,575
Nearest hospital
COASTAL HARBOR TREATMENT CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Hemphill is a mixed practice specialist, with above-average Medicare volume (top 14% in GA), with speaking/promotional industry engagement in the top 3% of GA peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Hemphill experienced with botox injection, per unit?
Based on Medicare claims data, Dr. Hemphill performed 28,085 botox injection, per unit services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Hemphill receive payments from pharmaceutical companies?
Yes. Dr. Hemphill received a total of $1,965,357 from 96 companies across 3,690 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Hemphill's costs compare to other neurology with special qualifications in child neurology physicians in Savannah?
Dr. Hemphill's average Medicare payment per service is $12. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Hemphill) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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