NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1598792004 D.O.
Verify on CMS → Gavin Little, D.O.
Neurology Physician in Stratham, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 19,866 in Neurology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 398 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
89%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gavin Little, D.O. filed 2,262 Medicare Part D claims in 2023 as a Neurology Physician in Stratham, New Hampshire, prescribing 89% generic.
- 2K
- Part D claims, 2023
- 89%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Gavin Little, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,262 Top 15% higher than 85% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Gavin Little, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gavin Little, D.O.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
2,262 73% vs specialty avg
Specialty distribution in New Hampshire
How Neurology Physician compares to other specialties among New Hampshire providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Neurology Physician. Verify directly:
How MIPS and board certification work
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).
Gavin Little, D.O. appears in the CMS NPPES registry as a Neurology Physician provider holding D.O. credentials at 118 PORTSMOUTH AVE BLDG D, Stratham, NH, 03885, with a listed phone of (603) 778-1620. NPI 1598792004 was issued on 06/28/2006.
Medicare Part D records for calendar year 2023 show 2,262 prescription claims written by this provider, covering 398 Medicare beneficiaries and totaling roughly $229K in drug spend, split 10% brand-name and 89% generic by claim count, with an opioid prescribing rate of 1.3%.
Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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
Provider Details
| NPI | 1598792004 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 06/28/2006 |
Hospital and facility affiliations
Facilities where Gavin Little, D.O. 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.
Core Physicians LLC
Plaistow, NH
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Gavin Little, D.O. - brand share 10.0%
Neurology Physician average
10% brand-name claims vs 89% generic, on 2,262 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.
2,262
Total Claims
$229K
Total Drug Cost
398
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,140
- Total Day Supply
- 149,509
- Brand vs Generic
- 10% brand / 89% generic
- Brand Drug Cost
- $184K
- Generic Drug Cost
- $45K
- Opioid Claims
- 30 (1.3% rate)
- Antibiotic Claims
- 60
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 34, 65-74: 204, 75-84: 121, 85+: 39
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gavin Little, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
195 claims
- Levothyroxine Sodium
Levothyroxine Sodium
110 claims
- Lisinopril
Lisinopril
103 claims
- Amlodipine Besylate
Amlodipine Besylate
85 claims
- Hydrochlorothiazide 75
Hydrochlorothiazide
75 claims
- Losartan Potassium 69
Losartan Potassium
69 claims
- Metoprolol Succinate 65
Metoprolol Succinate
65 claims
- Rosuvastatin Calcium 45
Rosuvastatin Calcium
45 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 195 |
| Levothyroxine Sodium | 110 |
| Lisinopril | 103 |
| Amlodipine Besylate | 85 |
| Hydrochlorothiazide | 75 |
| Losartan Potassium | 69 |
| Metoprolol Succinate | 65 |
| Rosuvastatin Calcium | 45 |
| Omeprazole | 44 |
| Simvastatin | 38 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Gavin Little, D.O. fits within the Neurology Physician landscape nationally.
19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Gavin Little, D.O.'s 2,262 claims are above the specialty average of 1,309.
Nearby Neurology Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Little.
Dr. Alexander Auchus
MD
Lebanon, NH
Dr. Donald Ayres
MD
Lebanon, NH
Dr. Saeedeh Azary
M.D., M.P.H.
Nashua, NH
Dr. Francis Benz
MD
Lebanon, NH
Dr. James Bernat
M.D.
Lebanon, NH
Compare Neurology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New Hampshire medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore New Hampshire
Frequently Asked Questions
What is Gavin Little, D.O.'s specialty? ▼
Gavin Little, D.O. specializes in Neurology Physician and practices in Stratham, New Hampshire. Credentials: D.O..
How much does Gavin Little, D.O. prescribe under Medicare Part D? ▼
In 2023, Gavin Little, D.O. wrote 2,262 Medicare Part D claims totaling $229K in drug costs for 398 beneficiaries.
Where is Gavin Little, D.O. located? ▼
Gavin Little, D.O. is located at 118 PORTSMOUTH AVE BLDG D, Stratham, NH, 03885. Phone: (603) 778-1620.
What is Gavin Little, D.O.'s NPI number? ▼
Gavin Little, D.O.'s National Provider Identifier (NPI) is 1598792004, issued on 06/28/2006.
Does Gavin Little, D.O. prescribe more brand-name or generic drugs? ▼
Gavin Little, D.O.'s prescribing is 10% brand-name and 89% generic drugs by claim count, with $184K in brand drug costs.
Does Gavin Little, D.O. prescribe opioids? ▼
Yes, Gavin Little, D.O. had 30 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
How many Neurology Physician providers are there in the US? ▼
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Gavin Little, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gavin Little, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gavin Little, D.O. accept Medicare? ▼
Gavin Little, D.O. appears in CMS Medicare data with 2,262 Part D claims and 398 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gavin Little, D.O.'s credentials? ▼
Gavin Little, D.O.'s NPI is 1598792004 with credentials D.O.. 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
View source datasets and methodology notes
- 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.