2026 NPPES data Internal Medicine Physician NPI 1306824545 MD
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Marilynn Moore, MD

Internal Medicine Physician in Pasadena, 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 172,858 in Internal 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
13K
Medicare Part D claims · 438 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
12.8/100
▼ 70 pts below national avg 83.1 · Penalty band
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Marilynn Moore, MD reported a CMS MIPS final score of 12.8/100 - below the 83.1 national average - and filed 13,287 Medicare Part D claims in 2023.

12.8/100
MIPS score · -70 vs avg
13K
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.

Marilynn Moore, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

13 2nd percentile higher than 2% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). This entry sits in this band. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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 Marilynn Moore, MD sits

This provider among internal medicine physician peers

Across the 36,260 internal medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Marilynn Moore, MD writes more Part D claims than 96% of them and scores higher on MIPS quality than 1% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 80Marilynn Moore, MD-Part D claim volume, percentile in specialty: 96 · MIPS quality, percentile: 1
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one internal medicine physician peer from a representative sample of 60; the gold marker is Marilynn Moore, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Marilynn Moore, 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 Marilynn Moore, MD?

Below national average

NPI registry status

Active

Issued 01/06/2006

NPI 1306824545

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

13,287 389% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

12.8/100 70.3 pts vs avg

Penalty band band

vs 83.1 national avg

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Internal Medicine Physician - 2.1%Internal Medicine Physician2.1%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Marilynn Moore, MD's 2023 MIPS final score plotted against the Internal Medicine Physician national average

Below national average
MIPS Final Score
12.8/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) - 12.8/100 vs national avg 83.1

0%100%National avg83%12.8%
MIPS final score (Internal Medicine Physician) - 12.8/100 vs national avg 83.1

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).

Marilynn Moore, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 1060 E GREEN ST, Pasadena, CA, 91106, with a listed phone of (626) 792-3843. NPI 1306824545 was issued on 01/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Moore most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 13,287 prescription claims written by this provider, covering 438 Medicare beneficiaries and totaling roughly $970K in drug spend, split 12% brand-name and 87% generic by claim count, with an opioid prescribing rate of 2.2%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 12.8/100 for the 2023 performance year (Quality 0, Cost 42.6), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1060 E GREEN ST
Pasadena, CA 91106

Provider Details

NPI 1306824545
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 01/06/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

12.7724
Final Score
Avg: 83.1
0
Quality
42.5747
Cost

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 Marilynn Moore, MD. To verify Marilynn Moore, 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

Marilynn Moore, MD - brand share 12.0%
Internal Medicine Physician average

12% brand-name claims vs 87% generic, on 13,287 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.

13,287
Total Claims
$970K
Total Drug Cost
438
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16,853
Total Day Supply
466,612
Brand vs Generic
12% brand / 87% generic
Brand Drug Cost
$505K
Generic Drug Cost
$461K
Opioid Claims
291 (2.2% rate)
Antibiotic Claims
350

Patient Demographics

Average Patient Age
80.5 years
Avg HCC Risk Score
1.68
Gender Split
74% female / 26% male
Age Distribution
<65: 17, 65-74: 101, 75-84: 167, 85+: 153

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Marilynn Moore, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
927
Amlodipine Besylate
626
Atorvastatin Calcium
533
Quetiapine Fumarate
431
Gabapentin
382
Rosuvastatin Calcium
358
Furosemide
328
Potassium Chloride
266
Eliquis
Apixaban
264
Mirtazapine
232

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How Marilynn Moore, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Marilynn Moore, MD's 13,287 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Moore.

Compare Internal Medicine 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 Internal Medicine 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.

Frequently Asked Questions

What is Marilynn Moore, MD's specialty?
Marilynn Moore, MD specializes in Internal Medicine Physician and practices in Pasadena, California. Credentials: MD.
How much does Marilynn Moore, MD prescribe under Medicare Part D?
In 2023, Marilynn Moore, MD wrote 13,287 Medicare Part D claims totaling $970K in drug costs for 438 beneficiaries.
What is Marilynn Moore, MD's Medicare quality score?
Marilynn Moore, MD has a CMS MIPS Final Score of 12.8/100 (Quality: 0, Cost: 42.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Marilynn Moore, MD located?
Marilynn Moore, MD is located at 1060 E GREEN ST, Pasadena, CA, 91106. Phone: (626) 792-3843.
What is Marilynn Moore, MD's NPI number?
Marilynn Moore, MD's National Provider Identifier (NPI) is 1306824545, issued on 01/06/2006.
Does Marilynn Moore, MD prescribe more brand-name or generic drugs?
Marilynn Moore, MD's prescribing is 12% brand-name and 87% generic drugs by claim count, with $505K in brand drug costs.
Does Marilynn Moore, MD prescribe opioids?
Yes, Marilynn Moore, MD had 291 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Marilynn Moore, MD prescribe most often?
Based on 2023 Medicare Part D data, Marilynn Moore, MD's most frequently prescribed drugs include Levothyroxine Sodium, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marilynn Moore, MD accept Medicare?
Marilynn Moore, MD appears in CMS Medicare data with 13,287 Part D claims and 438 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marilynn Moore, MD's credentials?
Marilynn Moore, MD's NPI is 1306824545 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

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.