2026 NPPES data Psychologist NPI 1902219850 PSY.D.
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Rohn Stark, PSY.D.

Psychologist 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 47,555 in Psychologist, 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
CMS neutral threshold · no category scores published

What the federal data shows

Rohn Stark, PSY.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored.

75/100
CMS neutral score · not measured
#32
Psychologist rank among California specialties

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.

What does the federal data show about Rohn Stark, PSY.D.?

CMS neutral score, not measured

NPI registry status

Active

Issued 06/09/2014

NPI 1902219850

Primary specialty

Psychologist

Mid-sized

47,555 US NPIs in this specialty

MIPS final score

75/100

CMS neutral score, not measured

No category scores published; CMS assigned the performance threshold

Specialty distribution in California

How Psychologist compares to other specialties among California providers

California providers
Behavior Technician17.3%Marriage & Family Therapist5.5%Student in an Organized Heal…5%Mental Health Counselor3.9%Pharmacist3.5%Clinical Social Worker3.1%Psychologist0.8%
Largest specialties in California (% of in-state providers)

MIPS score not measured

CMS assigned a neutral 75/100 threshold

CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.

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).

Rohn Stark, PSY.D. appears in the CMS NPPES registry as a Psychologist provider holding PSY.D. credentials at 4929 WILSHIRE BLVD STE 510, Los Angeles, CA, 90010, with a listed phone of (562) 904-3999. NPI 1902219850 was issued on 06/09/2014.

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 Psychologist providers operate outside Part D entirely. On the CMS Merit-based Incentive Payment System, this provider carries a Final Score of 75/100 for the 2023 performance year, but CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score: this is the neutral performance threshold CMS assigns where nothing was scored, so it is not comparable with clinicians whose score was measured.

Psychologist is a mid-sized specialty nationwide, with 47,555 enrolled providers across 56 states and an average of 760 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

4929 WILSHIRE BLVD STE 510
Los Angeles, CA 90010

Provider Details

NPI 1902219850
Specialty Psychologist
Credentials PSY.D.
Gender Male
NPI Issued 06/09/2014

CMS Quality Score (MIPS)

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

75
Final Score
CMS neutral threshold · not measured

Reporting: Group practice

Hospital and facility affiliations

Facilities where Rohn Stark, PSY.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.

Memory Check Psychological Services, A Professional Corporation
Salinas, 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 Rohn Stark, PSY.D.. To verify Rohn Stark, PSY.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.

Psychologist Overview

How Rohn Stark, PSY.D. fits within the Psychologist landscape nationally.

47,555
Psychologist Providers in US
56
States with Psychologist
760
Avg Claims per Provider

Nearby Psychologist Providers in California

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

Compare Psychologist 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 Psychologist 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 Rohn Stark, PSY.D.'s specialty?
Rohn Stark, PSY.D. specializes in Psychologist and practices in Los Angeles, California. Credentials: PSY.D..
What is Rohn Stark, PSY.D.'s Medicare quality score?
Rohn Stark, PSY.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. 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 Rohn Stark, PSY.D. located?
Rohn Stark, PSY.D. is located at 4929 WILSHIRE BLVD STE 510, Los Angeles, CA, 90010. Phone: (562) 904-3999.
What is Rohn Stark, PSY.D.'s NPI number?
Rohn Stark, PSY.D.'s National Provider Identifier (NPI) is 1902219850, issued on 06/09/2014.
How many Psychologist providers are there in the US?
There are 47,555 Psychologist providers across 56 states in the US. The average Psychologist provider writes 760 Medicare Part D claims per year.
Does Rohn Stark, PSY.D. accept Medicare?
Rohn Stark, PSY.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rohn Stark, PSY.D.'s credentials?
Rohn Stark, PSY.D.'s NPI is 1902219850 with credentials PSY.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

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.