NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1043509953 M.D.
Verify on CMS → Allison Arch, M.D.
Neurology Physician in Torrance, 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 20,467 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
565
Medicare Part D claims · 123 beneficiaries · Neurology Physician avg: 1K
Industry payments
$1.1K
54 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Allison Arch, M.D. filed 565 Medicare Part D claims in 2024 as a Neurology Physician in Torrance, California.
- 565
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥65th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Allison Arch, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1043509953), first enumerated 03/31/2011.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 565 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.1K in reported industry payments (54 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Allison Arch, M.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Arch with other Neurology Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Venkat Raghav Aachi, MD Thousand Oaks, CA
- Dr. John Aalbers, M.D. San Diego, CA
- Dr. Puya Abbassi, D.O. San Jose, CA
- Ahmed Abdelhak, MB CHB San Francisco, CA
- Dr. Hadi Abou El Hassan, MD Los Angeles, CA
- Dr. John Paul Aboubechara, MD, PHD Palo Alto, CA
Other specialties in Torrance: Behavior Technician (1,112) · Student in an Organized Health Care Education/Training Program (974) · Marriage & Family Therapist (382) · Physical Therapist (268)
CMS NPPES provider registry desk
NPI 1043509953 · Neurology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1043509953
- ENUM-MID 2011
- TAX-MID 20K Neurology Physician
- RX-LIGHT 565
- BOOK-LIGHT 2,160 in California
- PHOTO-ENUM Amy Chan, M.D. · 2011
Allison Arch, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
565 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Allison Arch, M.D. 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 Allison Arch, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
565 58% vs specialty avg
Specialty distribution in California
How Neurology 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 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).
Practice Address
Provider Details
| NPI | 1043509953 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 03/31/2011 |
Hospital and facility affiliations
Facilities where Allison Arch, 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.
Providence Medical Institute
Torrance, 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).
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 Allison Arch, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
ABBVIE 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.
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 Allison Arch, M.D.. To verify Allison Arch, M.D.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
565
Total Claims
$111K
Total Drug Cost
123
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,215.333
- Total Day Supply
- 35,341
- Generic Drug Cost
- $16K
Patient Demographics
- Average Patient Age
- 75.0 years
- Avg HCC Risk Score
- 1.73
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 17, 65-74: 35, 75-84: 45, 85+: 26
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Allison Arch, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Levetiracetam
Levetiracetam
61 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
53 claims
- Donepezil Hcl
Donepezil Hcl
45 claims
- Gabapentin
Gabapentin
26 claims
- Lacosamide
Lacosamide
25 claims
- Divalproex Sodium 20
Divalproex Sodium
20 claims
- Carbidopa-Levodopa 19
Carbidopa-Levodopa
19 claims
- Atorvastatin Calcium 17
Atorvastatin Calcium
17 claims
| Drug | Claims |
|---|---|
| Levetiracetam | 61 |
| Cyclobenzaprine Hcl | 53 |
| Donepezil Hcl | 45 |
| Gabapentin | 26 |
| Lacosamide | 25 |
| Divalproex Sodium | 20 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 19 |
| Atorvastatin Calcium | 17 |
| Memantine Hcl | 17 |
| Pregabalin | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Allison Arch, M.D. fits within the Neurology Physician landscape nationally.
20,467
Neurology Physician Providers in US
54
States with Neurology Physician
1,356
Avg Claims per Provider
Allison Arch, M.D.'s 565 claims are below the specialty average of 1,356.
Nationwide Neurology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Arch, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2011)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Arch.
One of 2,160 Neurology Physician providers enrolled in California, 11 are shown on this page.
Dr. Justin Abraham
M.D., M.B.A.
Santa Barbara, CA
Dr. Scott Abramson
M.D.
San Leandro, CA
Dr. Valerie Acevedo
D.O.
Newport Beach, CA
Dr. Saviour Achilike
MD
Tracy, CA
Kian Adabi
Richmond, CA
Compare Neurology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Allison Arch, M.D.'s specialty? ▼
Allison Arch, M.D. specializes in Neurology Physician and practices in Torrance, California. Credentials: M.D..
How much does Allison Arch, M.D. prescribe under Medicare Part D? ▼
In 2024, Allison Arch, M.D. wrote 565 Medicare Part D claims totaling $111K in drug costs for 123 beneficiaries.
Where is Allison Arch, M.D. located? ▼
Allison Arch, M.D. is located at 4101 TORRANCE BLVD, Torrance, CA, 90503. Phone: (310) 374-8191.
What is Allison Arch, M.D.'s NPI number? ▼
Allison Arch, M.D.'s National Provider Identifier (NPI) is 1043509953, issued on 03/31/2011.
How many Neurology Physician providers are there in the US? ▼
There are 20,467 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,356 Medicare Part D claims per year.
What drugs does Allison Arch, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Allison Arch, M.D.'s most frequently prescribed drugs include Levetiracetam, Cyclobenzaprine Hcl, Donepezil Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Allison Arch, M.D. accept Medicare? ▼
Allison Arch, M.D. appears in CMS Medicare data with 565 Part D claims and 123 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Allison Arch, M.D.'s credentials? ▼
Allison Arch, M.D.'s NPI is 1043509953 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
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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.