NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1336105626 MD
Verify on CMS → Michael Sullivan, MD
Neurology Physician in So Lake Tahoe, 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 19,885 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
330
Medicare Part D claims · 57 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
45.1/100
▼ 38 pts below national avg 83.1 · Below average
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
Michael Sullivan, MD reported a CMS MIPS final score of 45.1/100 - below the 83.1 national average - and filed 330 Medicare Part D claims in 2023.
- 45.1/100
- MIPS score · -38 vs avg
- 330
- Part D claims, 2023
- 89%
- 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.
Michael Sullivan, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
45 4th percentile higher than 4% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Michael Sullivan, MD sits
This provider among neurology physician peers
Across the 5,437 neurology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Michael Sullivan, MD writes more Part D claims than 27% of them and scores higher on MIPS quality than 6% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one neurology physician peer from a representative sample of 60; the gold marker is Michael Sullivan, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Michael Sullivan, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Michael Sullivan, MD?
Below national averagePrimary specialty
Neurology Physician
Medicare Part D claims
330 75% vs specialty avg
MIPS final score
45.1/100 38 pts vs avg
Specialty distribution in California
How Neurology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Michael Sullivan, MD's 2023 MIPS final score plotted against the Neurology Physician national average
- MIPS Final Score
- 45.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neurology Physician) - 45.1/100 vs national avg 83.1
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).
Michael Sullivan, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 2101 SOUTH AVE, So Lake Tahoe, CA, 96150, with a listed phone of (530) 542-5744. NPI 1336105626 was issued on 04/25/2006.
Medicare Part D records for calendar year 2023 show 330 prescription claims written by this provider, covering 57 Medicare beneficiaries and totaling roughly $144K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 4.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 45.1/100 for the 2023 performance year (Quality 7.1, Cost 35), compared with the national average of 83.1.
Neurology Physician is a mid-sized specialty nationwide, with 19,885 enrolled providers across 54 states and an average of 1,309 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 | 1336105626 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/25/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
45.1303
Final Score
Avg: 83.1
7.0957
Quality
35.0053
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Michael Sullivan, MD. To verify Michael Sullivan, MD'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
Michael Sullivan, MD - brand share 11.0%
Neurology Physician average
11% brand-name claims vs 89% generic, on 330 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.
330
Total Claims
$144K
Total Drug Cost
57
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 434
- Total Day Supply
- 12,874
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $117K
- Generic Drug Cost
- $27K
- Opioid Claims
- 14 (4.2% rate)
Patient Demographics
- Average Patient Age
- 68.0 years
- Avg HCC Risk Score
- 1.27
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 16, 65-74: 25, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Sullivan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Duloxetine Hcl
Duloxetine Hcl
29 claims
- Gabapentin
Gabapentin
22 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
19 claims
- Memantine Hcl
Memantine Hcl
12 claims
- Hydrocodone-Acetam… 11
Hydrocodone-Acetaminophen
11 claims
- Venlafaxine Hcl Er 11
Venlafaxine Hcl Er
11 claims
| Drug | Claims |
|---|---|
| Duloxetine Hcl | 29 |
| Gabapentin | 22 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 19 |
| Memantine Hcl | 12 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 11 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Michael Sullivan, MD fits within the Neurology Physician landscape nationally.
19,885
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Michael Sullivan, MD's 330 claims are below the specialty average of 1,309.
Nearby Neurology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Sullivan.
Dr. Venkat Raghav Aachi
MD
Thousand Oaks, CA
Dr. John Aalbers
M.D.
San Diego, CA
Dr. Puya Abbassi
D.O.
San Jose, CA
Dr. Ahmed Abdelhak
MB CHB
San Francisco, CA
Dr. Justin Abraham
M.D., M.B.A.
Santa Barbara, CA
Compare Neurology 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 Neurology 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 Michael Sullivan, MD's specialty? ▼
Michael Sullivan, MD specializes in Neurology Physician and practices in So Lake Tahoe, California. Credentials: MD.
How much does Michael Sullivan, MD prescribe under Medicare Part D? ▼
In 2023, Michael Sullivan, MD wrote 330 Medicare Part D claims totaling $144K in drug costs for 57 beneficiaries.
What is Michael Sullivan, MD's Medicare quality score? ▼
Michael Sullivan, MD has a CMS MIPS Final Score of 45.1/100 (Quality: 7.1, Cost: 35). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michael Sullivan, MD located? ▼
Michael Sullivan, MD is located at 2101 SOUTH AVE, So Lake Tahoe, CA, 96150. Phone: (530) 542-5744.
What is Michael Sullivan, MD's NPI number? ▼
Michael Sullivan, MD's National Provider Identifier (NPI) is 1336105626, issued on 04/25/2006.
Does Michael Sullivan, MD prescribe more brand-name or generic drugs? ▼
Michael Sullivan, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $117K in brand drug costs.
Does Michael Sullivan, MD prescribe opioids? ▼
Yes, Michael Sullivan, MD had 14 opioid claims in 2023 with an opioid prescribing rate of 4.2%.
How many Neurology Physician providers are there in the US? ▼
There are 19,885 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Michael Sullivan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Sullivan, MD's most frequently prescribed drugs include Duloxetine Hcl, Gabapentin, Carbidopa-Levodopa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Sullivan, MD accept Medicare? ▼
Michael Sullivan, MD appears in CMS Medicare data with 330 Part D claims and 57 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Sullivan, MD's credentials? ▼
Michael Sullivan, MD's NPI is 1336105626 with credentials MD. 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.
- 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 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.