2026 NPPES data Magnetic Resonance Imaging Radiologic Technologist NPI 1477581866 M.D., PH.D.
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Sean Johnston, M.D., PH.D.

Magnetic Resonance Imaging Radiologic Technologist in Santa Ana, 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 170 in Magnetic Resonance Imaging Radiologic Technologist, 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.
MIPS score
75/100
▼ 8 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Sean Johnston, M.D., PH.D. reported a CMS MIPS final score of 75/100 - below the 83.1 national average.

75/100
MIPS score · -8 vs avg

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.

Sean Johnston, M.D., PH.D.'s MIPS score vs every scored U.S. clinician

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

75 15th percentile higher than 15% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 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

What does the federal data show about Sean Johnston, M.D., PH.D.?

Below national average

NPI registry status

Active

Issued 06/28/2006

NPI 1477581866

Primary specialty

Magnetic Resonance Imaging Radiologic Technologist

Rare

170 US NPIs in this specialty

MIPS final score

75/100 8.1 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Magnetic Resonance Imaging Radiologic Technologist 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%Magnetic Resonance Imaging Radiologic Technologist - 0%Magnetic Resonance Imaging Radiologic Technologist0%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Sean Johnston, M.D., PH.D.'s 2023 MIPS final score plotted against the Magnetic Resonance Imaging Radiologic Technologist national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Magnetic Resonance Imaging Radiologic Technologist) - 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Magnetic Resonance Imaging Radiologic Technologist) - 75/100 vs national avg 83.1
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).

Sean Johnston, M.D., PH.D. appears in the CMS NPPES registry as a Magnetic Resonance Imaging Radiologic Technologist provider holding M.D., PH.D. credentials at 2414 S FAIRVIEW ST STE 202B, Santa Ana, CA, 92704, with a listed phone of (805) 300-6761. NPI 1477581866 was issued on 06/28/2006.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Magnetic Resonance Imaging Radiologic Technologist providers operate outside Part D entirely. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

Magnetic Resonance Imaging Radiologic Technologist is a narrow specialty nationwide, with 170 enrolled providers across 39 states, 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

2414 S FAIRVIEW ST STE 202B
Santa Ana, CA 92704

Provider Details

NPI 1477581866
Specialty Magnetic Resonance Imaging Radiologic Technologist
Credentials M.D., PH.D.
Gender Male
NPI Issued 06/28/2006

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Group practice

Hospital and facility affiliations

Facilities where Sean Johnston, M.D., PH.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.

According to CMS billing records, Sean Johnston, M.D., PH.D. is affiliated with 9 Medicare-billing facilities across 2 states, 1 of which carry a CMS Hospital overall star rating.

Adventist Health Tulare
★★★☆☆ 3/5
Tulare, CA
Acute Care Hospitals
CMS CCN: 050784
Adventist Health Clearlake Hospital Inc.
Clearlake, CA
Adventist Health Physicians Network
Chico, CA
Hanford Community Hospital
Hanford, CA
Mawan Shuayto MD PC
Port Huron, MI
Radiology Medical Group OF Wmmc
Los Angeles, CA
Reedley Community Hospital
Reedley, CA
Vesta Telemedicine Solutions PLLC
Burbank, CA
Willits Hospital Inc
Willits, 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 Sean Johnston, M.D., PH.D.. To verify Sean Johnston, M.D., PH.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.

Magnetic Resonance Imaging Radiologic Technologist Overview

How Sean Johnston, M.D., PH.D. fits within the Magnetic Resonance Imaging Radiologic Technologist landscape nationally.

170
Magnetic Resonance Imaging Radiologic Technologist Providers in US
39
States with Magnetic Resonance Imaging Radiologic Technologist

Nearby Magnetic Resonance Imaging Radiologic Technologist Providers in California

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

Compare Magnetic Resonance Imaging Radiologic Technologist 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 Magnetic Resonance Imaging Radiologic Technologist 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 Sean Johnston, M.D., PH.D.'s specialty?
Sean Johnston, M.D., PH.D. specializes in Magnetic Resonance Imaging Radiologic Technologist and practices in Santa Ana, California. Credentials: M.D., PH.D..
What is Sean Johnston, M.D., PH.D.'s Medicare quality score?
Sean Johnston, M.D., PH.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sean Johnston, M.D., PH.D. located?
Sean Johnston, M.D., PH.D. is located at 2414 S FAIRVIEW ST STE 202B, Santa Ana, CA, 92704. Phone: (805) 300-6761.
What is Sean Johnston, M.D., PH.D.'s NPI number?
Sean Johnston, M.D., PH.D.'s National Provider Identifier (NPI) is 1477581866, issued on 06/28/2006.
How many Magnetic Resonance Imaging Radiologic Technologist providers are there in the US?
There are 170 Magnetic Resonance Imaging Radiologic Technologist providers across 39 states in the US.
Does Sean Johnston, M.D., PH.D. accept Medicare?
Sean Johnston, M.D., PH.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sean Johnston, M.D., PH.D.'s credentials?
Sean Johnston, M.D., PH.D.'s NPI is 1477581866 with credentials M.D., PH.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.
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.

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.