NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1891181103
Verify on CMS → Mark Hall
Student in an Organized Health Care Education/Training Program in Westlake Village, 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 351,014 in Student in an Organized Health Care Education/Training Program, 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
508
Medicare Part D claims · 107 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 488
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
86.1/100
▲ 3 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mark Hall reported a CMS MIPS final score of 86.1/100 - above the 83.5 national average - and filed 508 Medicare Part D claims in 2024.
- 86.1/100
- MIPS score · +3 vs avg
- 508
- Part D claims, 2024
- 73%
- generic prescribing
- ≥49th
- pct among measured MIPS (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 Mark Hall
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1891181103), first enumerated 04/13/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 508 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 86.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Mark Hall'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.
CMS NPPES provider registry desk
NPI 1891181103 · Student in an Organized Health Care Education/Training Program
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-INLINE · RX-LIGHT · BOOK-MID · PHOTO-FINISH
- NPI-10 1891181103
- ENUM-MID 2015
- TAX-MEGA 351K Student in
- MIPS-INLINE 86.1/100
- RX-LIGHT 508
- BOOK-MID 49,599 in California
- PHOTO-FINISH Tanvi Desai · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Hall · this prov…
Hall · this provider
86.1 MIPS pts
- Ibrahim Elkilany…
Ibrahim Elkilany
86.1 MIPS pts
- Tanvi Desai · near
Tanvi Desai
86.1 MIPS pts
- Philip Manners ·…
Philip Manners
86.1 MIPS pts
- Guy Weiss · near
Guy Weiss
86.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mark Hall's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
86 ≥ 49th percentile 49% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mark Hall sits
This provider among student in an organized health care education/training program peers
Across the 12,177 student in an organized health care education/training program providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Hall writes more Part D claims than 68% of them and scores higher on MIPS quality than 46% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one student in an organized health care education/training program peer from a representative sample of 60; the gold marker is Mark Hall. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mark Hall?
High performer (top quartile)Primary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
508 4% vs specialty avg
MIPS final score
86.1/100 2.6 pts vs avg
Specialty distribution in California
How Student in an Organized Health Care Education/Training Program compares to other specialties among California providers
Medicare quality performance, MIPS
Mark Hall's 2023 MIPS final score plotted against the Student in an Organized Health Care Education/Training Program national average
- MIPS Final Score
- 86.1/100
- vs 83.5 national avg · 2023 performance year
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 | 1891181103 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Gender | Male |
| NPI Issued | 04/13/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.1025
Final Score
Measured-score avg: 83.5
82.938
Quality
66.7384
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mark Hall 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.
The Regents OF The University OF California
Los Angeles, 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 Mark Hall. To verify Mark Hall'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 · Above average
Mark Hall - brand share 27.0%
Student in an Organized Health Care Education/Training Program average
27% brand-name claims vs 73% generic, on 508 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.
508
Total Claims
$700K
Total Drug Cost
107
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 908.033
- Total Day Supply
- 26,619
- Brand vs Generic
- 27% brand / 73% generic
- Brand Drug Cost
- $693K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.64
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Hall prescribes most
Top Medicare Part D drugs by claim count, 2024
- Allopurinol
Allopurinol
77 claims
- Prednisone
Prednisone
77 claims
- Methotrexate
Methotrexate
45 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
40 claims
- Sulfasalazine Dr
Sulfasalazine Dr
35 claims
- Enbrel Sureclick 25
Enbrel Sureclick
25 claims
- Otezla 24
Otezla
24 claims
- Humira(Cf) Pen 18
Humira(Cf) Pen
18 claims
| Drug | Claims |
|---|---|
| Allopurinol | 77 |
| Prednisone | 77 |
| Methotrexate Methotrexate Sodium | 45 |
| Hydroxychloroquine Sulfate | 40 |
| Sulfasalazine Dr Sulfasalazine | 35 |
| Enbrel Sureclick Etanercept | 25 |
| Otezla Apremilast | 24 |
| Humira(Cf) Pen Adalimumab | 18 |
| Alendronate Sodium | 17 |
| Colchicine | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in CA →
All providers in California →
Compare specialties →
Student in an Organized Health Care Education/Training Program Overview
How Mark Hall fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
351,014
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
488
Avg Claims per Provider
Mark Hall's 508 claims are above the specialty average of 488.
Nationwide Student in an Organized Health Care Education/Training Program peers with similar MIPS or enrollment year
Two federal-record peer sets for Hall, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (86.1 here).
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Student in an Organized Health Care Education/Training Program Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Hall.
One of 49,599 Student in an Organized Health Care Education/Training Program providers enrolled in California, 5 are shown here.
Frequently Asked Questions
What is Mark Hall's specialty? ▼
Mark Hall specializes in Student in an Organized Health Care Education/Training Program and practices in Westlake Village, California.
How much does Mark Hall prescribe under Medicare Part D? ▼
In 2024, Mark Hall wrote 508 Medicare Part D claims totaling $700K in drug costs for 107 beneficiaries.
What is Mark Hall's Medicare quality score? ▼
Mark Hall has a CMS MIPS Final Score of 86.1/100 (Quality: 82.9, Cost: 66.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Hall located? ▼
Mark Hall is located at 141 TRIUNFO CANYON RD STE 110, Westlake Village, CA, 91361. Phone: (805) 371-1393.
What is Mark Hall's NPI number? ▼
Mark Hall's National Provider Identifier (NPI) is 1891181103, issued on 04/13/2015.
Does Mark Hall prescribe more brand-name or generic drugs? ▼
Mark Hall's prescribing is 27% brand-name and 73% generic drugs by claim count, with $693K in brand drug costs.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 351,014 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 488 Medicare Part D claims per year.
What drugs does Mark Hall prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Hall's most frequently prescribed drugs include Allopurinol, Prednisone, Methotrexate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Hall accept Medicare? ▼
Mark Hall appears in CMS Medicare data with 508 Part D claims and 107 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Hall's credentials? ▼
Mark Hall's NPI is 1891181103. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.