NPI registry status
Active
2026 NPPES data Neuromuscular Medicine (Psychiatry & Neurology) Physician NPI 1366837734 MD, MPH
Verify on CMS → Mark Terrelonge, MD, MPH
Neuromuscular Medicine (Psychiatry & Neurology) Physician in San Francisco, 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 338 in Neuromuscular Medicine (Psychiatry & 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
332
Medicare Part D claims · 57 beneficiaries · Neuromuscular Medicine (Psychiatry & Neurology) Physician avg: 931
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.9/100
▲ 9 pts above national avg 83.1 · Exceptional
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
Mark Terrelonge, MD, MPH reported a CMS MIPS final score of 91.9/100 - above the 83.1 national average - and filed 332 Medicare Part D claims in 2023.
- 91.9/100
- MIPS score · +9 vs avg
- 332
- Part D claims, 2023
- 79%
- 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.
Mark Terrelonge, MD, MPH's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 37% higher than 63% 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 Mark Terrelonge, MD, MPH sits
This provider among neuromuscular medicine (psychiatry & neurology) physician peers
Across the 132 neuromuscular medicine (psychiatry & neurology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Terrelonge, MD, MPH writes more Part D claims than 27% of them and scores higher on MIPS quality than 65% - placing this provider in the lower-volume, high-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 neuromuscular medicine (psychiatry & neurology) physician peer from a representative sample of 60; the gold marker is Mark Terrelonge, MD, MPH. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mark Terrelonge, MD, MPH practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - 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 Mark Terrelonge, MD, MPH?
High performer (top quartile)Primary specialty
Neuromuscular Medicine (Psychiatry & Neurology) Physician
Medicare Part D claims
332 64% vs specialty avg
MIPS final score
91.9/100 8.8 pts vs avg
Specialty distribution in California
How Neuromuscular Medicine (Psychiatry & Neurology) Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Mark Terrelonge, MD, MPH's 2023 MIPS final score plotted against the Neuromuscular Medicine (Psychiatry & Neurology) Physician national average
- MIPS Final Score
- 91.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neuromuscular Medicine (Psychiatry & Neurology) Physician) - 91.9/100 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).
Mark Terrelonge, MD, MPH appears in the CMS NPPES registry as a Neuromuscular Medicine (Psychiatry & Neurology) Physician provider holding MD, MPH credentials at 505 PARNASSUS AVE, San Francisco, CA, 94143, with a listed phone of (415) 476-3891. NPI 1366837734 was issued on 04/02/2015.
Medicare Part D records for calendar year 2023 show 332 prescription claims written by this provider, covering 57 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 21% brand-name and 79% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.9/100 for the 2023 performance year (Quality 83.5, Cost 68), compared with the national average of 83.1.
Neuromuscular Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 338 enrolled providers across 44 states and an average of 931 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 | 1366837734 |
|---|---|
| Specialty | Neuromuscular Medicine (Psychiatry & Neurology) Physician |
| Credentials | MD, MPH |
| Gender | Male |
| NPI Issued | 04/02/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.8508
Final Score
Avg: 83.1
83.5371
Quality
68.0152
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mark Terrelonge, MD, MPH 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.
According to CMS billing records, Mark Terrelonge, MD, MPH is affiliated with 3 Medicare-billing facilities.
Ucsf Medical Group Business Services
San Francisco, CA
University OF California San Francisco
San Francisco, CA
University OF California Sfgh Medical Group
San Francisco, 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 Terrelonge, MD, MPH. To verify Mark Terrelonge, MD, MPH'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
Mark Terrelonge, MD, MPH - brand share 21.0%
Neuromuscular Medicine (Psychiatry & Neurology) Physician average
21% brand-name claims vs 79% generic, on 332 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.
332
Total Claims
$1.0M
Total Drug Cost
57
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 494
- Total Day Supply
- 14,405
- Brand vs Generic
- 21% brand / 79% generic
- Brand Drug Cost
- $1.0M
- Generic Drug Cost
- $24K
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Terrelonge, MD, MPH prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
36 claims
- Pregabalin
Pregabalin
31 claims
- Riluzole
Riluzole
26 claims
- Duloxetine Hcl
Duloxetine Hcl
23 claims
- Prednisone
Prednisone
19 claims
- Radicava Ors
Radicava Ors
18 claims
- Baclofen
Baclofen
17 claims
- Relyvrio
Relyvrio
17 claims
| Drug | Claims |
|---|---|
| Gabapentin | 36 |
| Pregabalin | 31 |
| Riluzole | 26 |
| Duloxetine Hcl | 23 |
| Prednisone | 19 |
| Radicava Ors Edaravone | 18 |
| Baclofen | 17 |
| Relyvrio Sod Phenylbutyrat/Taurursodiol | 17 |
| Pyridostigmine Bromide | 15 |
| Diazepam | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Neuromuscular Medicine (Psychiatry & Neurology) Physician in CA →
All providers in California →
Compare specialties →
Neuromuscular Medicine (Psychiatry & Neurology) Physician Overview
How Mark Terrelonge, MD, MPH fits within the Neuromuscular Medicine (Psychiatry & Neurology) Physician landscape nationally.
338
Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in US
44
States with Neuromuscular Medicine (Psychiatry & Neurology) Physician
931
Avg Claims per Provider
Mark Terrelonge, MD, MPH's 332 claims are below the specialty average of 931.
Nearby Neuromuscular Medicine (Psychiatry & Neurology) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Terrelonge.
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 Neuromuscular Medicine (Psychiatry & 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.
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Frequently Asked Questions
What is Mark Terrelonge, MD, MPH's specialty? ▼
Mark Terrelonge, MD, MPH specializes in Neuromuscular Medicine (Psychiatry & Neurology) Physician and practices in San Francisco, California. Credentials: MD, MPH.
How much does Mark Terrelonge, MD, MPH prescribe under Medicare Part D? ▼
In 2023, Mark Terrelonge, MD, MPH wrote 332 Medicare Part D claims totaling $1.0M in drug costs for 57 beneficiaries.
What is Mark Terrelonge, MD, MPH's Medicare quality score? ▼
Mark Terrelonge, MD, MPH has a CMS MIPS Final Score of 91.9/100 (Quality: 83.5, Cost: 68). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Terrelonge, MD, MPH located? ▼
Mark Terrelonge, MD, MPH is located at 505 PARNASSUS AVE, San Francisco, CA, 94143. Phone: (415) 476-3891.
What is Mark Terrelonge, MD, MPH's NPI number? ▼
Mark Terrelonge, MD, MPH's National Provider Identifier (NPI) is 1366837734, issued on 04/02/2015.
Does Mark Terrelonge, MD, MPH prescribe more brand-name or generic drugs? ▼
Mark Terrelonge, MD, MPH's prescribing is 21% brand-name and 79% generic drugs by claim count, with $1.0M in brand drug costs.
How many Neuromuscular Medicine (Psychiatry & Neurology) Physician providers are there in the US? ▼
There are 338 Neuromuscular Medicine (Psychiatry & Neurology) Physician providers across 44 states in the US. The average Neuromuscular Medicine (Psychiatry & Neurology) Physician provider writes 931 Medicare Part D claims per year.
What drugs does Mark Terrelonge, MD, MPH prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Terrelonge, MD, MPH's most frequently prescribed drugs include Gabapentin, Pregabalin, Riluzole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Terrelonge, MD, MPH accept Medicare? ▼
Mark Terrelonge, MD, MPH appears in CMS Medicare data with 332 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 Mark Terrelonge, MD, MPH's credentials? ▼
Mark Terrelonge, MD, MPH's NPI is 1366837734 with credentials MD, MPH. 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.