NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1720190648 M.D.
Verify on CMS → Martin Krell, M.D.
Neurological Surgery Physician in Santa Clarita, 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 8,116 in Neurological Surgery 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
20
Medicare Part D claims · Neurological Surgery Physician avg: 181
Generic prescribing
0%
generic claims · 55% 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
Martin Krell, M.D. filed 20 Medicare Part D claims in 2023 as a Neurological Surgery Physician in Santa Clarita, California, prescribing 0% generic.
- 20
- Part D claims, 2023
- 0%
- generic prescribing
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.
Martin Krell, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
20 0th percentile higher than 0% 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-eligible specialty (heuristic, not verified)
Martin Krell, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Martin Krell, M.D.?
Quality data not reportedPrimary specialty
Neurological Surgery Physician
Medicare Part D claims
20 89% vs specialty avg
Specialty distribution in California
How Neurological Surgery 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 Neurological Surgery 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).
Martin Krell, M.D. appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding M.D. credentials at 30014 PRIMROSE DR, Santa Clarita, CA, 91390, with a listed phone of (310) 666-1647. NPI 1720190648 was issued on 08/31/2006.
Medicare Part D records for calendar year 2023 show 20 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $3K in drug spend, split 55% brand-name and 0% generic by claim count.
Neurological Surgery Physician is a mid-sized specialty nationwide, with 8,116 enrolled providers across 53 states and an average of 181 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 | 1720190648 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/31/2006 |
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 Martin Krell, M.D.. To verify Martin Krell, 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.
Brand vs generic prescribing mix · Brand-heavy
Martin Krell, M.D. - brand share 55.0%
Neurological Surgery Physician average
55% brand-name claims vs 0% generic, on 20 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.
20
Total Claims
$3K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 44
- Total Day Supply
- 1,330
- Brand vs Generic
- 55% brand / 0% generic
- Brand Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 85.0 years
- Avg HCC Risk Score
- 0.76
Neurological Surgery Physician Overview
How Martin Krell, M.D. fits within the Neurological Surgery Physician landscape nationally.
8,116
Neurological Surgery Physician Providers in US
53
States with Neurological Surgery Physician
181
Avg Claims per Provider
Martin Krell, M.D.'s 20 claims are below the specialty average of 181.
Nearby Neurological Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Krell.
Dr. Samy Abdou
MD
San Diego, CA
Dr. Kumar Abhinav
BSC MBBS, FRCS(SN)
Stanford, CA
Dr. Moustapha Abou-Samra
MD
Ventura, CA
Dr. Bret Abshire
M.D.
Murrieta, CA
Dr. Deyaaldeen Abu Reesh
MD
Palo Alto, CA
Compare Neurological Surgery 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 Neurological Surgery 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.
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Frequently Asked Questions
What is Martin Krell, M.D.'s specialty? ▼
Martin Krell, M.D. specializes in Neurological Surgery Physician and practices in Santa Clarita, California. Credentials: M.D..
How much does Martin Krell, M.D. prescribe under Medicare Part D? ▼
In 2023, Martin Krell, M.D. wrote 20 Medicare Part D claims totaling $3K in drug costs for N/A beneficiaries.
Where is Martin Krell, M.D. located? ▼
Martin Krell, M.D. is located at 30014 PRIMROSE DR, Santa Clarita, CA, 91390. Phone: (310) 666-1647.
What is Martin Krell, M.D.'s NPI number? ▼
Martin Krell, M.D.'s National Provider Identifier (NPI) is 1720190648, issued on 08/31/2006.
Does Martin Krell, M.D. prescribe more brand-name or generic drugs? ▼
Martin Krell, M.D.'s prescribing is 55% brand-name and 0% generic drugs by claim count, with $3K in brand drug costs.
How many Neurological Surgery Physician providers are there in the US? ▼
There are 8,116 Neurological Surgery Physician providers across 53 states in the US. The average Neurological Surgery Physician provider writes 181 Medicare Part D claims per year.
Does Martin Krell, M.D. accept Medicare? ▼
Martin Krell, M.D. appears in CMS Medicare data with 20 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Martin Krell, M.D.'s credentials? ▼
Martin Krell, M.D.'s NPI is 1720190648 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 (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.