NPI registry status
Active
2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1164868873 MD
Verify on CMS → Brent Pennelly, MD
Physical Medicine & Rehabilitation Physician in Arroyo Grande, 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 15,336 in Physical Medicine & Rehabilitation 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
817
Medicare Part D claims · 189 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
87%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Brent Pennelly, MD carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 817 Medicare Part D claims in 2023.
- 75/100
- CMS neutral score · not measured
- 817
- Part D claims, 2023
- 87%
- 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.
CMS NPPES provider registry desk
NPI 1164868873 · Physical Medicine & Rehabilitation Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-NEUTRAL · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1164868873
- ENUM-MID 2013
- TAX-MID 15K Physical Medicine
- MIPS-NEUTRAL 75/100
- RX-LIGHT 817
- BOOK-LIGHT 1,518 in California
- PHOTO-ENUM Mary McClanahan · 2013
Brent Pennelly, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
817 ≥ 73rd percentile 73% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Brent Pennelly, 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 Brent Pennelly, MD?
CMS neutral score, not measuredPrimary specialty
Physical Medicine & Rehabilitation Physician
Medicare Part D claims
817 5% vs specialty avg
MIPS final score
75/100
Specialty distribution in California
How Physical Medicine & Rehabilitation Physician compares to other specialties among California providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1164868873 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/21/2013 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Individual
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 Brent Pennelly, MD. To verify Brent Pennelly, 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
Brent Pennelly, MD - brand share 11.0%
Physical Medicine & Rehabilitation Physician average
11% brand-name claims vs 87% generic, on 817 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.
817
Total Claims
$54K
Total Drug Cost
189
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 926
- Total Day Supply
- 24,989
- Brand vs Generic
- 11% brand / 87% generic
- Brand Drug Cost
- $43K
- Generic Drug Cost
- $10K
- Opioid Claims
- 48 (5.9% rate)
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 78.0 years
- Avg HCC Risk Score
- 1.78
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Brent Pennelly, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
72 claims
- Pantoprazole Sodium
Pantoprazole Sodium
37 claims
- Trazodone Hcl
Trazodone Hcl
30 claims
- Eliquis
Eliquis
29 claims
- Oxycodone Hcl 28
Oxycodone Hcl
28 claims
- Clopidogrel 27
Clopidogrel
27 claims
- Amlodipine Besylate 25
Amlodipine Besylate
25 claims
- Lisinopril 22
Lisinopril
22 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 72 |
| Pantoprazole Sodium | 37 |
| Trazodone Hcl | 30 |
| Eliquis Apixaban | 29 |
| Oxycodone Hcl | 28 |
| Clopidogrel Clopidogrel Bisulfate | 27 |
| Amlodipine Besylate | 25 |
| Lisinopril | 22 |
| Gabapentin | 18 |
| Levothyroxine Sodium | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Physical Medicine & Rehabilitation Physician in CA →
All providers in California →
Compare specialties →
Physical Medicine & Rehabilitation Physician Overview
How Brent Pennelly, MD fits within the Physical Medicine & Rehabilitation Physician landscape nationally.
15,336
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider
Brent Pennelly, MD's 817 claims are above the specialty average of 781.
Nationwide Physical Medicine & Rehabilitation Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Pennelly, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physical Medicine & Rehabilitation Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Pennelly.
One of 1,518 Physical Medicine & Rehabilitation Physician providers enrolled in California, 5 are shown here.
Dr. Payandeh Abadee
M.D.
San Pedro, CA
Dr. Sammantha Abbott
DPT
Eureka, CA
Dr. Alexan Abdel-Malek
MD
Sylmar, CA
Dr. Alicia Abels
M.D.
Folsom, CA
Dr. Gary Abrams
M.D.
San Francisco, CA
Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Brent Pennelly, MD's specialty? ▼
Brent Pennelly, MD specializes in Physical Medicine & Rehabilitation Physician and practices in Arroyo Grande, California. Credentials: MD.
How much does Brent Pennelly, MD prescribe under Medicare Part D? ▼
In 2023, Brent Pennelly, MD wrote 817 Medicare Part D claims totaling $54K in drug costs for 189 beneficiaries.
What is Brent Pennelly, MD's Medicare quality score? ▼
Brent Pennelly, MD has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. 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 Brent Pennelly, MD located? ▼
Brent Pennelly, MD is located at 345 S HALCYON RD, Arroyo Grande, CA, 93420. Phone: (805) 489-4261.
What is Brent Pennelly, MD's NPI number? ▼
Brent Pennelly, MD's National Provider Identifier (NPI) is 1164868873, issued on 05/21/2013.
Does Brent Pennelly, MD prescribe more brand-name or generic drugs? ▼
Brent Pennelly, MD's prescribing is 11% brand-name and 87% generic drugs by claim count, with $43K in brand drug costs.
Does Brent Pennelly, MD prescribe opioids? ▼
Yes, Brent Pennelly, MD had 48 opioid claims in 2023 with an opioid prescribing rate of 5.9%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
There are 15,336 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does Brent Pennelly, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Brent Pennelly, MD's most frequently prescribed drugs include Atorvastatin Calcium, Pantoprazole Sodium, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brent Pennelly, MD accept Medicare? ▼
Brent Pennelly, MD appears in CMS Medicare data with 817 Part D claims and 189 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brent Pennelly, MD's credentials? ▼
Brent Pennelly, MD's NPI is 1164868873 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
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.