NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1851344329 M.D.
Verify on CMS → Sylvia Rojas, M.D.
Neurology Physician in Helena, Montana.
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
824
Medicare Part D claims · 146 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$17.72
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Sylvia Rojas, M.D. filed 824 Medicare Part D claims in 2024 as a Neurology Physician in Helena, Montana, prescribing 92% generic.
- 824
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥72nd
- 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 Sylvia Rojas, 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 1851344329), first enumerated 05/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 824 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
$17.72 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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.
CMS NPPES provider registry desk
NPI 1851344329 · Neurology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1851344329
- ENUM-LEGACY 2006
- TAX-MID 20K Neurology Physician
- RX-LIGHT 824
- BOOK-THIN 56 in Montana
- PHOTO-ENUM Mark Malkin · 2006
Sylvia Rojas, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
824 ≥ 72nd percentile 72% 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)
Sylvia Rojas, 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 Sylvia Rojas, M.D.?
Quality data not reportedPrimary specialty
Neurology Physician
Medicare Part D claims
824 39% vs specialty avg
Specialty distribution in Montana
How Neurology Physician compares to other specialties among Montana 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 | 1851344329 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/18/2006 |
Hospital and facility affiliations
Facilities where Sylvia Rojas, 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.
Benefis Hospitals Inc
★★☆☆☆ 2/5
Helena, MT
Acute Care Hospitals
CMS CCN: 270012
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 Sylvia Rojas, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$18
Largest payer
Ipsen Biopharmaceuticals, 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 · Generic-heavy
Sylvia Rojas, M.D. - brand share 8.0%
Neurology Physician average
8% brand-name claims vs 92% generic, on 824 2024 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 2024.
824
Total Claims
$298K
Total Drug Cost
146
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,183.667
- Total Day Supply
- 33,316
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $271K
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 25, 65-74: 57, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Sylvia Rojas, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Memantine Hcl
Memantine Hcl
68 claims
- Gabapentin
Gabapentin
50 claims
- Levetiracetam
Levetiracetam
44 claims
- Donepezil Hcl
Donepezil Hcl
43 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
41 claims
- Baclofen
Baclofen
34 claims
- Rasagiline Mesylate 27
Rasagiline Mesylate
27 claims
- Carbidopa-Levodopa… 25
Carbidopa-Levodopa Er
25 claims
| Drug | Claims |
|---|---|
| Memantine Hcl | 68 |
| Gabapentin | 50 |
| Levetiracetam | 44 |
| Donepezil Hcl | 43 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 41 |
| Baclofen | 34 |
| Rasagiline Mesylate | 27 |
| Carbidopa-Levodopa Er Carbidopa/Levodopa | 25 |
| Lamotrigine | 21 |
| Primidone | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Sylvia Rojas, 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
Sylvia Rojas, M.D.'s 824 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 Rojas, both outside Montana so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurology Physician Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Rojas.
One of 56 Neurology Physician providers enrolled in Montana, 5 are shown here.
Dr. Steven Arbogast
D.O.
Billings, MT
Dr. Matthew Bain
MD
Bozeman, MT
Gauhar Chaudhary
Billings, MT
Dr. Wynde Cheek
D.O.
Helena, MT
Dr. Nicole Clark
MD
Helena, MT
Compare Neurology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sylvia Rojas, M.D.'s specialty? ▼
Sylvia Rojas, M.D. specializes in Neurology Physician and practices in Helena, Montana. Credentials: M.D..
How much does Sylvia Rojas, M.D. prescribe under Medicare Part D? ▼
In 2024, Sylvia Rojas, M.D. wrote 824 Medicare Part D claims totaling $298K in drug costs for 146 beneficiaries.
Where is Sylvia Rojas, M.D. located? ▼
Sylvia Rojas, M.D. is located at 1645 VANDELAY AVE STE 301, Helena, MT, 59601. Phone: (406) 731-8888.
What is Sylvia Rojas, M.D.'s NPI number? ▼
Sylvia Rojas, M.D.'s National Provider Identifier (NPI) is 1851344329, issued on 05/18/2006.
Does Sylvia Rojas, M.D. prescribe more brand-name or generic drugs? ▼
Sylvia Rojas, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $271K in brand drug costs.
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 Sylvia Rojas, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Sylvia Rojas, M.D.'s most frequently prescribed drugs include Memantine Hcl, Gabapentin, Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sylvia Rojas, M.D. accept Medicare? ▼
Sylvia Rojas, M.D. appears in CMS Medicare data with 824 Part D claims and 146 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sylvia Rojas, M.D.'s credentials? ▼
Sylvia Rojas, M.D.'s NPI is 1851344329 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.