2026 NPPES data Neurology with Special Qualifications in Child Neurology Physician NPI 1285672329 M.D.
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JOHN HEMPHILL, M.D.

Neurology with Special Qualifications in Child Neurology Physician in SAVANNAH, Georgia. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
6K
Medicare Part D claims · 711 beneficiaries · Neurology with Special Qualifications in Child Neurology Physician avg: 359
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
Industry payments
$385.2K
539 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOHN HEMPHILL, M.D. is a Neurology with Special Qualifications in Child Neurology Physician ([object Object]) practicing in SAVANNAH, Georgia with a Medicare Part D prescribing footprint of 6K claims across 711 beneficiaries — 20% brand-name prescribing . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $385.2K across 539 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOHN HEMPHILL, M.D. reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 5,913 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOHN HEMPHILL, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JOHN HEMPHILL, M.D. at a glance

Below national average

NPI registry status

Active

Issued 06/02/2006

NPI 1285672329

Primary specialty

Neurology with Special Qualifications in Child Neurology Physician

Niche

1,803 US NPIs in this specialty

Medicare Part D claims

5,913 1547% vs specialty avg

2023 prescription claims

Specialty avg: 359

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Georgia

How Neurology with Special Qualifications in Child Neurology Physician compares to other specialties among Georgia providers

Georgia providers

Neurology with Special Qualifications in Child Neurology Physician share within Georgia

1. Neurology with Special Qualifications in Child Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neurology with Special Qualifications in Child Neurology Physician share within Georgia

Medicare quality performance — MIPS

JOHN HEMPHILL, M.D.'s 2023 MIPS final score plotted against the Neurology with Special Qualifications in Child Neurology Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Neurology with Special Qualifications in Child Neurology Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Neurology with Special Qualifications in Child Neurology Physician) — 75/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

JOHN HEMPHILL, M.D. is a Neurology with Special Qualifications in Child Neurology Physician provider practicing in SAVANNAH, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1285672329. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JOHN HEMPHILL, M.D. appears in the CMS NPPES registry as a Neurology with Special Qualifications in Child Neurology Physician provider holding M.D. credentials at 6602 WATERS AVE, SAVANNAH, GA, 31406, with a listed phone of (912) 354-7676. NPI 1285672329 was issued on 06/02/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HEMPHILL most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 5,913 prescription claims written by this provider, covering 711 Medicare beneficiaries and totaling roughly $5.7 million in drug spend, split 20% brand-name and 80% generic by claim count, with an opioid prescribing rate of 0.6%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

Neurology with Special Qualifications in Child Neurology Physician is a narrow specialty nationwide, with 1,803 enrolled providers across 51 states and an average of 359 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

6602 WATERS AVE
SAVANNAH, GA 31406

Provider Details

NPI 1285672329
Specialty Neurology with Special Qualifications in Child Neurology Physician
Credentials M.D.
Gender Male
NPI Issued 06/02/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

75
Final Score
Avg: 83.1

Reporting: Group practice

Hospital and facility affiliations

Facilities where JOHN HEMPHILL, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

SAVANNAH NEUROLOGY SPECIALISTS P C
SAVANNAH, GA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JOHN HEMPHILL, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$385.2K

Largest payer

Eisai Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

JOHN HEMPHILL, M.D. — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 5,913 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

5,913
Total Claims
$5.7M
Total Drug Cost
711
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,144
Total Day Supply
265,937
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$5.3M
Generic Drug Cost
$441K
Opioid Claims
37 (0.6% rate)

Patient Demographics

Average Patient Age
66.5 years
Avg HCC Risk Score
1.38
Gender Split
67% female / 33% male
Age Distribution
<65: 226, 65-74: 249, 75-84: 191, 85+: 45

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Gabapentin
367
Levetiracetam
367
Topiramate
250
Donepezil Hcl
224
Baclofen
215
Tizanidine Hcl
183
Lamotrigine
144
Nurtec Odt
Rimegepant Sulfate
136
Amitriptyline Hcl
125
Rizatriptan
Rizatriptan Benzoate
117

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Neurology with Special Qualifications in Child Neurology Physician Overview

How JOHN HEMPHILL, M.D. fits within the Neurology with Special Qualifications in Child Neurology Physician landscape nationally.

1,803
Neurology with Special Qualifications in Child Neurology Physician Providers in US
51
States with Neurology with Special Qualifications in Child Neurology Physician
359
Avg Claims per Provider

JOHN HEMPHILL, M.D.'s 5,913 claims are above the specialty average of 359.

Nearby Neurology with Special Qualifications in Child Neurology Physician Providers in Georgia

Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as HEMPHILL.

Compare Neurology with Special Qualifications in Child Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN HEMPHILL, M.D.'s specialty?
JOHN HEMPHILL, M.D. specializes in Neurology with Special Qualifications in Child Neurology Physician and practices in SAVANNAH, Georgia. Credentials: M.D..
How much does JOHN HEMPHILL, M.D. prescribe under Medicare Part D?
In 2023, JOHN HEMPHILL, M.D. wrote 5,913 Medicare Part D claims totaling $5.7M in drug costs for 711 beneficiaries.
What is JOHN HEMPHILL, M.D.'s Medicare quality score?
JOHN HEMPHILL, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOHN HEMPHILL, M.D. located?
JOHN HEMPHILL, M.D. is located at 6602 WATERS AVE, SAVANNAH, GA, 31406. Phone: (912) 354-7676.
What is JOHN HEMPHILL, M.D.'s NPI number?
JOHN HEMPHILL, M.D.'s National Provider Identifier (NPI) is 1285672329, issued on 06/02/2006.
Does JOHN HEMPHILL, M.D. prescribe more brand-name or generic drugs?
JOHN HEMPHILL, M.D.'s prescribing is 20% brand-name and 80% generic drugs by claim count, with $5.3M in brand drug costs.
Does JOHN HEMPHILL, M.D. prescribe opioids?
Yes, JOHN HEMPHILL, M.D. had 37 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
How many Neurology with Special Qualifications in Child Neurology Physician providers are there in the US?
There are 1,803 Neurology with Special Qualifications in Child Neurology Physician providers across 51 states in the US. The average Neurology with Special Qualifications in Child Neurology Physician provider writes 359 Medicare Part D claims per year.
What drugs does JOHN HEMPHILL, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHN HEMPHILL, M.D.'s most frequently prescribed drugs include Gabapentin, Levetiracetam, Topiramate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN HEMPHILL, M.D. accept Medicare?
JOHN HEMPHILL, M.D. appears in CMS Medicare data with 5,913 Part D claims and 711 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN HEMPHILL, M.D.'s credentials?
JOHN HEMPHILL, M.D.'s NPI is 1285672329 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology