NPI registry status
Active
2026 NPPES data Pediatrics Physician NPI 1679500391 M.D.
Verify on CMS → Mary Malloy, M.D.
Pediatrics 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 80,576 in Pediatrics 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
154
Medicare Part D claims · 30 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.5/100
▼ 9 pts below national avg 83.5 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mary Malloy, M.D. reported a CMS MIPS final score of 74.5/100 - below the 83.5 national average - and filed 154 Medicare Part D claims in 2023.
- 74.5/100
- MIPS score · -9 vs avg
- 154
- Part D claims, 2023
- 52%
- 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.
Mary Malloy, M.D.'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.
75 ≥ 13th percentile 13% 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 Mary Malloy, M.D. sits
This provider among pediatrics physician peers
Across the 1,099 pediatrics physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Malloy, M.D. writes more Part D claims than 52% of them and scores higher on MIPS quality than 10% - placing this provider in the high-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 pediatrics physician peer from a representative sample of 60; the gold marker is Mary Malloy, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Mary Malloy, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Mary Malloy, M.D.?
Below national averagePrimary specialty
Pediatrics Physician
Medicare Part D claims
154 80% vs specialty avg
MIPS final score
74.5/100 9 pts vs avg
Specialty distribution in California
How Pediatrics Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Mary Malloy, M.D.'s 2023 MIPS final score plotted against the Pediatrics Physician national average
- MIPS Final Score
- 74.5/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Pediatrics Physician) - 74.5/100 vs national avg 83.5
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).
Mary Malloy, M.D. appears in the CMS NPPES registry as a Pediatrics Physician provider holding M.D. credentials at 400 PARNASSUS AVE, San Francisco, CA, 94143, with a listed phone of (415) 353-2350. NPI 1679500391 was issued on 06/27/2006.
Medicare Part D records for calendar year 2023 show 154 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $64K in drug spend, split 48% brand-name and 52% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.5/100 for the 2023 performance year, compared with the 83.5 average among clinicians with a measured score.
Pediatrics Physician is a high-volume specialty nationwide, with 80,576 enrolled providers across 56 states and an average of 762 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 | 1679500391 |
|---|---|
| Specialty | Pediatrics Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/27/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.4657
Final Score
Measured-score avg: 83.5
46.6814
Cost
76
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mary Malloy, M.D. 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.
Ucsf Medical Group Business Services
San Francisco, CA
University OF California San Francisco
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 Mary Malloy, M.D.. To verify Mary Malloy, M.D.'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 · Above average
Mary Malloy, M.D. - brand share 48.0%
Pediatrics Physician average
48% brand-name claims vs 52% generic, on 154 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.
154
Total Claims
$64K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 338
- Total Day Supply
- 10,050
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $57K
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 0.72
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Malloy, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Praluent Pen
Praluent Pen
35 claims
- Repatha Sureclick
Repatha Sureclick
34 claims
- Ezetimibe
Ezetimibe
28 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
27 claims
| Drug | Claims |
|---|---|
| Praluent Pen Alirocumab | 35 |
| Repatha Sureclick Evolocumab | 34 |
| Ezetimibe | 28 |
| Rosuvastatin Calcium | 27 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pediatrics Physician Overview
How Mary Malloy, M.D. fits within the Pediatrics Physician landscape nationally.
80,576
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider
Mary Malloy, M.D.'s 154 claims are below the specialty average of 762.
Nearby Pediatrics Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Malloy.
Dr. Subha Aahlad
M.D.
Foster City, CA
Dr. Rebecca Aaronson
MD
Panorama City, CA
Dr. Gregorio Abad-Santos
M.D.
Long Beach, CA
Dr. Michelle Abajian
MD
La Canada, CA
Dr. Joseph Abapo
MD
Riverside, CA
Compare Pediatrics 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 Pediatrics 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 Mary Malloy, M.D.'s specialty? ▼
Mary Malloy, M.D. specializes in Pediatrics Physician and practices in San Francisco, California. Credentials: M.D..
How much does Mary Malloy, M.D. prescribe under Medicare Part D? ▼
In 2023, Mary Malloy, M.D. wrote 154 Medicare Part D claims totaling $64K in drug costs for 30 beneficiaries.
What is Mary Malloy, M.D.'s Medicare quality score? ▼
Mary Malloy, M.D. has a CMS MIPS Final Score of 74.5/100, Cost: 46.7. 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 Mary Malloy, M.D. located? ▼
Mary Malloy, M.D. is located at 400 PARNASSUS AVE, San Francisco, CA, 94143. Phone: (415) 353-2350.
What is Mary Malloy, M.D.'s NPI number? ▼
Mary Malloy, M.D.'s National Provider Identifier (NPI) is 1679500391, issued on 06/27/2006.
Does Mary Malloy, M.D. prescribe more brand-name or generic drugs? ▼
Mary Malloy, M.D.'s prescribing is 48% brand-name and 52% generic drugs by claim count, with $57K in brand drug costs.
How many Pediatrics Physician providers are there in the US? ▼
There are 80,576 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does Mary Malloy, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Malloy, M.D.'s most frequently prescribed drugs include Praluent Pen, Repatha Sureclick, Ezetimibe. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Malloy, M.D. accept Medicare? ▼
Mary Malloy, M.D. appears in CMS Medicare data with 154 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Malloy, M.D.'s credentials? ▼
Mary Malloy, M.D.'s NPI is 1679500391 with credentials M.D.. 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.