NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1639125487 MD
Verify on CMS → Lisa Ma, MD
Family Medicine Physician in Los Angeles, 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 147,760 in Family Medicine 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
9K
Medicare Part D claims · 463 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
80%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.8/100
▲ 8 pts above national avg 83.5 · Exceptional
Industry payments
$823.36
31 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Lisa Ma, MD reported a CMS MIPS final score of 91.8/100 - above the 83.5 national average - and filed 9,421 Medicare Part D claims in 2023.
- 91.8/100
- MIPS score · +8 vs avg
- 9K
- Part D claims, 2023
- 80%
- 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 1639125487 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ABOVE · RX-MID · BOOK-MID · PHOTO-FINISH
- NPI-10 1639125487
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- MIPS-ABOVE 91.8/100
- RX-MID 9,421
- BOOK-MID 15,933 in California
- PHOTO-FINISH Jose Chi · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Ma · this provider
Ma · this provider
91.8 MIPS pts
- Christy Manganel…
Christy Manganello
91.8 MIPS pts
- Rachel Spiegel ·…
Rachel Spiegel
91.8 MIPS pts
- Michael Martin ·…
Michael Martin
91.8 MIPS pts
- Jose Chi · near
Jose Chi
91.8 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Lisa Ma, 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.
92 ≥ 61st percentile 61% 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 Lisa Ma, MD sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Lisa Ma, MD writes more Part D claims than 87% of them and scores higher on MIPS quality than 65% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Lisa Ma, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Lisa Ma, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Lisa Ma, MD?
High performer (top quartile)Primary specialty
Family Medicine Physician
Medicare Part D claims
9,421 176% vs specialty avg
MIPS final score
91.8/100 8.3 pts vs avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Lisa Ma, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 91.8/100
- 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 | 1639125487 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/25/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.7726
Final Score
Measured-score avg: 83.5
100
Quality
39.242
Cost
100
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Lisa Ma, MD 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.
Mosaic Family Care Medical Group Inc
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).
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 Lisa Ma, MD. Source: openpaymentsdata.cms.gov.
Total received
$823
Largest payer
ABBVIE INC.
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 Lisa Ma, MD. To verify Lisa Ma, 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
Lisa Ma, MD - brand share 19.0%
Family Medicine Physician average
19% brand-name claims vs 80% generic, on 9,421 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.
9,421
Total Claims
$966K
Total Drug Cost
463
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,804
- Total Day Supply
- 288,647
- Brand vs Generic
- 19% brand / 80% generic
- Brand Drug Cost
- $748K
- Generic Drug Cost
- $215K
- Opioid Claims
- 329 (3.5% rate)
- Antibiotic Claims
- 321
Patient Demographics
- Average Patient Age
- 76.0 years
- Avg HCC Risk Score
- 2.30
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 45, 65-74: 181, 75-84: 133, 85+: 104
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Lisa Ma, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
603 claims
- Gabapentin
Gabapentin
474 claims
- Levothyroxine Sodium
Levothyroxine Sodium
407 claims
- Amlodipine Besylate
Amlodipine Besylate
355 claims
- Lisinopril
Lisinopril
246 claims
- Xarelto
Xarelto
244 claims
- Famotidine 217
Famotidine
217 claims
- Losartan Potassium 201
Losartan Potassium
201 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 603 |
| Gabapentin | 474 |
| Levothyroxine Sodium | 407 |
| Amlodipine Besylate | 355 |
| Lisinopril | 246 |
| Xarelto Rivaroxaban | 244 |
| Famotidine | 217 |
| Losartan Potassium | 201 |
| Donepezil Hcl | 197 |
| Metformin Hcl | 190 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Lisa Ma, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Lisa Ma, MD's 9,421 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ma, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (91.8 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ma.
One of 15,933 Family Medicine Physician providers enrolled in California, 5 are shown here.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Lisa Ma, MD's specialty? ▼
Lisa Ma, MD specializes in Family Medicine Physician and practices in Los Angeles, California. Credentials: MD.
How much does Lisa Ma, MD prescribe under Medicare Part D? ▼
In 2023, Lisa Ma, MD wrote 9,421 Medicare Part D claims totaling $966K in drug costs for 463 beneficiaries.
What is Lisa Ma, MD's Medicare quality score? ▼
Lisa Ma, MD has a CMS MIPS Final Score of 91.8/100 (Quality: 100, Cost: 39.2). 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 Lisa Ma, MD located? ▼
Lisa Ma, MD is located at 4857 HUNTINGTON DR N, Los Angeles, CA, 90032. Phone: (323) 226-9042.
What is Lisa Ma, MD's NPI number? ▼
Lisa Ma, MD's National Provider Identifier (NPI) is 1639125487, issued on 05/25/2006.
Does Lisa Ma, MD prescribe more brand-name or generic drugs? ▼
Lisa Ma, MD's prescribing is 19% brand-name and 80% generic drugs by claim count, with $748K in brand drug costs.
Does Lisa Ma, MD prescribe opioids? ▼
Yes, Lisa Ma, MD had 329 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Lisa Ma, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Lisa Ma, MD's most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lisa Ma, MD accept Medicare? ▼
Lisa Ma, MD appears in CMS Medicare data with 9,421 Part D claims and 463 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lisa Ma, MD's credentials? ▼
Lisa Ma, MD's NPI is 1639125487 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.