NPI registry status
Active
2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1184698102 MD
Verify on CMS → Betty Liu, MD
Physical Medicine & Rehabilitation Physician in Riverside, 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
278
Medicare Part D claims · 31 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
77.5/100
▼ 6 pts below national avg 83.5 · Above neutral
Industry payments
$19
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Betty Liu, MD reported a CMS MIPS final score of 77.5/100 - below the 83.5 national average - and filed 278 Medicare Part D claims in 2023.
- 77.5/100
- MIPS score · -6 vs avg
- 278
- Part D claims, 2023
- 96%
- 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 1184698102 · Physical Medicine & Rehabilitation Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-BELOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1184698102
- ENUM-LEGACY 2006
- TAX-MID 15K Physical Medicine
- MIPS-BELOW 77.5/100
- RX-LIGHT 278
- BOOK-LIGHT 1,518 in California
- PHOTO-FINISH Karen Barr · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Liu · this provi…
Liu · this provider
77.5 MIPS pts
- Jason Bitterman …
Jason Bitterman
77.5 MIPS pts
- Karen Barr · near
Karen Barr
77.5 MIPS pts
- Jessica Berry · …
Jessica Berry
77.5 MIPS pts
- Justin Berthold …
Justin Berthold
77.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Betty Liu, MD'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.
78 ≥ 20th percentile 20% 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 Betty Liu, MD sits
This provider among physical medicine & rehabilitation physician peers
Across the 2,483 physical medicine & rehabilitation physician providers who report both Medicare Part D prescribing and a MIPS quality score, Betty Liu, MD writes more Part D claims than 44% of them and scores higher on MIPS quality than 30% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one physical medicine & rehabilitation physician peer from a representative sample of 60; the gold marker is Betty Liu, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Betty Liu, 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 Betty Liu, MD?
Below national averagePrimary specialty
Physical Medicine & Rehabilitation Physician
Medicare Part D claims
278 64% vs specialty avg
MIPS final score
77.5/100 6 pts vs avg
Specialty distribution in California
How Physical Medicine & Rehabilitation Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Betty Liu, MD's 2023 MIPS final score plotted against the Physical Medicine & Rehabilitation Physician national average
- MIPS Final Score
- 77.5/100
- 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 | 1184698102 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/15/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
77.5068
Final Score
Measured-score avg: 83.5
68.6144
Quality
56.4081
Cost
100
Promoting Interoperability
Reporting: Group practice
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Betty Liu, MD. Source: openpaymentsdata.cms.gov.
Total received
$19
Largest payer
Boston Scientific Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Betty Liu, MD. To verify Betty Liu, 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 · Generic-heavy
Betty Liu, MD - brand share 4.0%
Physical Medicine & Rehabilitation Physician average
4% brand-name claims vs 96% generic, on 278 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.
278
Total Claims
$5K
Total Drug Cost
31
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 319
- Total Day Supply
- 9,256
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $275
- Generic Drug Cost
- $5K
- Opioid Claims
- 60 (21.6% rate)
Patient Demographics
- Average Patient Age
- 61.3 years
- Avg HCC Risk Score
- 1.15
- Age Distribution
- <65: 15, 65-74: 14, 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 Betty Liu, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Baclofen
Baclofen
38 claims
- Gabapentin
Gabapentin
29 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
29 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
28 claims
- Meloxicam
Meloxicam
20 claims
- Buspirone Hcl 15
Buspirone Hcl
15 claims
- Pregabalin 14
Pregabalin
14 claims
- Ibuprofen 13
Ibuprofen
13 claims
| Drug | Claims |
|---|---|
| Baclofen | 38 |
| Gabapentin | 29 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 29 |
| Cyclobenzaprine Hcl | 28 |
| Meloxicam | 20 |
| Buspirone Hcl | 15 |
| Pregabalin | 14 |
| Ibuprofen | 13 |
| Morphine Sulfate Er Morphine Sulfate | 13 |
| Butalbital-Acetaminophen-Caffe Butalb/Acetaminophen/Caffeine | 12 |
* 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 Betty Liu, 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
Betty Liu, MD's 278 claims are below the specialty average of 781.
Nationwide Physical Medicine & Rehabilitation Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Liu, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (77.5 here).
Same NPPES enumeration year (2006)
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 Liu.
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 Betty Liu, MD's specialty? ▼
Betty Liu, MD specializes in Physical Medicine & Rehabilitation Physician and practices in Riverside, California. Credentials: MD.
How much does Betty Liu, MD prescribe under Medicare Part D? ▼
In 2023, Betty Liu, MD wrote 278 Medicare Part D claims totaling $5K in drug costs for 31 beneficiaries.
What is Betty Liu, MD's Medicare quality score? ▼
Betty Liu, MD has a CMS MIPS Final Score of 77.5/100 (Quality: 68.6, Cost: 56.4). 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 Betty Liu, MD located? ▼
Betty Liu, MD is located at 5885 BROCKTON AVE, Riverside, CA, 92506. Phone: (800) 270-5016.
What is Betty Liu, MD's NPI number? ▼
Betty Liu, MD's National Provider Identifier (NPI) is 1184698102, issued on 02/15/2006.
Does Betty Liu, MD prescribe more brand-name or generic drugs? ▼
Betty Liu, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $275 in brand drug costs.
Does Betty Liu, MD prescribe opioids? ▼
Yes, Betty Liu, MD had 60 opioid claims in 2023 with an opioid prescribing rate of 21.6%.
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 Betty Liu, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Betty Liu, MD's most frequently prescribed drugs include Baclofen, Gabapentin, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Betty Liu, MD accept Medicare? ▼
Betty Liu, MD appears in CMS Medicare data with 278 Part D claims and 31 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Betty Liu, MD's credentials? ▼
Betty Liu, MD's NPI is 1184698102 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.