NPI registry status
Active
2026 NPPES data Epilepsy Physician NPI 1386007383
Verify on CMS → Alison Headley
Epilepsy Physician in San Diego, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 352 in Epilepsy 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
847
Medicare Part D claims · 97 beneficiaries · Epilepsy Physician avg: 878
Generic prescribing
88%
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
Alison Headley filed 847 Medicare Part D claims in 2023 as a Epilepsy Physician in San Diego, California, prescribing 88% generic.
- 847
- Part D claims, 2023
- 88%
- 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.
Alison Headley's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
847 Top 27% higher than 73% 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)
Alison Headley 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 Alison Headley?
Quality data not reportedPrimary specialty
Epilepsy Physician
Medicare Part D claims
847 4% vs specialty avg
Specialty distribution in California
How Epilepsy Physician compares to other specialties among California 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 Epilepsy 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).
Alison Headley appears in the CMS NPPES registry as an Epilepsy Physician provider at 200 W ARBOR DR, San Diego, CA, 92103, with a listed phone of (619) 543-6266. NPI 1386007383 was issued on 03/29/2016.
Medicare Part D records for calendar year 2023 show 847 prescription claims written by this provider, covering 97 Medicare beneficiaries and totaling roughly $198K in drug spend, split 10% brand-name and 88% generic by claim count.
Epilepsy Physician is a narrow specialty nationwide, with 352 enrolled providers across 43 states and an average of 878 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 | 1386007383 |
|---|---|
| Specialty | Epilepsy Physician |
| Gender | Female |
| NPI Issued | 03/29/2016 |
Hospital and facility affiliations
Facilities where Alison Headley 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.
Regents OF The University OF California
San Diego, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Alison Headley. To verify Alison Headley's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Alison Headley - brand share 10.0%
Epilepsy Physician average
10% brand-name claims vs 88% generic, on 847 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.
847
Total Claims
$198K
Total Drug Cost
97
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,263
- Total Day Supply
- 37,370
- Brand vs Generic
- 10% brand / 88% generic
- Brand Drug Cost
- $126K
- Generic Drug Cost
- $70K
Patient Demographics
- Average Patient Age
- 66.6 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alison Headley prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levetiracetam
Levetiracetam
121 claims
- Lamotrigine
Lamotrigine
92 claims
- Lacosamide
Lacosamide
71 claims
- Donepezil Hcl
Donepezil Hcl
58 claims
- Clobazam
Clobazam
55 claims
- Topiramate 41
Topiramate
41 claims
- Carbamazepine Er 37
Carbamazepine Er
37 claims
- Aptiom 36
Aptiom
36 claims
| Drug | Claims |
|---|---|
| Levetiracetam | 121 |
| Lamotrigine | 92 |
| Lacosamide | 71 |
| Donepezil Hcl | 58 |
| Clobazam | 55 |
| Topiramate | 41 |
| Carbamazepine Er Carbamazepine | 37 |
| Aptiom Eslicarbazepine Acetate | 36 |
| Clonazepam | 25 |
| Divalproex Sodium | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Epilepsy Physician Overview
How Alison Headley fits within the Epilepsy Physician landscape nationally.
352
Epilepsy Physician Providers in US
43
States with Epilepsy Physician
878
Avg Claims per Provider
Alison Headley's 847 claims are below the specialty average of 878.
Nearby Epilepsy Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Headley.
Samantha Allen
Sacramento, CA
Dr. Carmel Armon
MD
Loma Linda, CA
Dr. Caren Armstrong
MD, PHD
Sacramento, CA
Melissa Asmar
Sacramento, CA
Kristie Bauman
Sacramento, CA
Compare Epilepsy 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Epilepsy 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 California
Frequently Asked Questions
What is Alison Headley's specialty? ▼
Alison Headley specializes in Epilepsy Physician and practices in San Diego, California.
How much does Alison Headley prescribe under Medicare Part D? ▼
In 2023, Alison Headley wrote 847 Medicare Part D claims totaling $198K in drug costs for 97 beneficiaries.
Where is Alison Headley located? ▼
Alison Headley is located at 200 W ARBOR DR, San Diego, CA, 92103. Phone: (619) 543-6266.
What is Alison Headley's NPI number? ▼
Alison Headley's National Provider Identifier (NPI) is 1386007383, issued on 03/29/2016.
Does Alison Headley prescribe more brand-name or generic drugs? ▼
Alison Headley's prescribing is 10% brand-name and 88% generic drugs by claim count, with $126K in brand drug costs.
How many Epilepsy Physician providers are there in the US? ▼
There are 352 Epilepsy Physician providers across 43 states in the US. The average Epilepsy Physician provider writes 878 Medicare Part D claims per year.
What drugs does Alison Headley prescribe most often? ▼
Based on 2023 Medicare Part D data, Alison Headley's most frequently prescribed drugs include Levetiracetam, Lamotrigine, Lacosamide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alison Headley accept Medicare? ▼
Alison Headley appears in CMS Medicare data with 847 Part D claims and 97 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alison Headley's credentials? ▼
Alison Headley's NPI is 1386007383. 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.