NPI registry status
Active
2026 NPPES data Psychologist NPI 1336261643 PSY.D.
Verify on CMS → Claudia Mosier, PSY.D.
Psychologist in Chicago, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 48,221 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.
Prescribing volume
406
Medicare Part D claims · 41 beneficiaries · Psychologist avg: 741
What the federal data shows
Claudia Mosier, PSY.D. filed 406 Medicare Part D claims in 2024 as a Psychologist in Chicago, Illinois.
- 406
- Part D claims, 2024
- ≥61st
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Claudia Mosier, PSY.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1336261643), first enumerated 04/06/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 406 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Claudia Mosier, PSY.D.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1336261643 · Psychologist
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1336261643
- ENUM-MID 2007
- TAX-MID 48K Psychologist
- RX-LIGHT 406
- BOOK-LIGHT 1,076 in Illinois
- PHOTO-ENUM Michael Zimmerman, PHD · 2007
Claudia Mosier, PSY.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
406 ≥ 61st percentile 61% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Claudia Mosier, PSY.D.?
Quality data not reportedPrimary specialty
Psychologist
Medicare Part D claims
406 45% vs specialty avg
Specialty distribution in Illinois
How Psychologist compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Psychologist. Verify directly:
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 | 1336261643 |
|---|---|
| Specialty | Psychologist |
| Credentials | PSY.D. |
| Gender | Female |
| NPI Issued | 04/06/2007 |
Hospital and facility affiliations
Facilities where Claudia Mosier, 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.
Southern Psychological Specialists LLC
New Orleans, LA
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 - Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 - they are NOT specific to Claudia Mosier, PSY.D.. To verify Claudia Mosier, PSY.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR 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 Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
406
Total Claims
$11K
Total Drug Cost
41
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 508
- Total Day Supply
- 15,175
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 57.0 years
- Avg HCC Risk Score
- 1.27
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 30, 65-74: N/A, 75-84: N/A, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Claudia Mosier, PSY.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Quetiapine Fumarate
Quetiapine Fumarate
60 claims
- Fluoxetine Hcl
Fluoxetine Hcl
45 claims
- Trazodone Hcl
Trazodone Hcl
31 claims
- Dextroamphetamine-…
Dextroamphetamine-Amphetamine
26 claims
- Aripiprazole 22
Aripiprazole
22 claims
- Olanzapine 21
Olanzapine
21 claims
- Risperidone 21
Risperidone
21 claims
- Doxepin Hcl 18
Doxepin Hcl
18 claims
| Drug | Claims |
|---|---|
| Quetiapine Fumarate | 60 |
| Fluoxetine Hcl | 45 |
| Trazodone Hcl | 31 |
| Dextroamphetamine-Amphetamine Dextroamphetamine/Amphetamine | 26 |
| Aripiprazole | 22 |
| Olanzapine | 21 |
| Risperidone | 21 |
| Doxepin Hcl | 18 |
| Escitalopram Oxalate | 18 |
| Lorazepam | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychologist Overview
How Claudia Mosier, PSY.D. fits within the Psychologist landscape nationally.
48,221
Psychologist Providers in US
56
States with Psychologist
741
Avg Claims per Provider
Claudia Mosier, PSY.D.'s 406 claims are below the specialty average of 741.
Nationwide Psychologist peers with similar MIPS or enrollment year
Two federal-record peer sets for Mosier, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychologist Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Mosier.
One of 1,076 Psychologist providers enrolled in Illinois, 5 are shown here.
Dr. Margo Abrams
PSY.D.
Chicago, IL
Dr. Allison Ackerman
PH.D.
Deerfield, IL
Dorothy Addae
Chicago, IL
Dr. Sweety Agrawal
PSYD
Chicago, IL
Dr. Kavita Ajmere
PH.D.
Chicago, IL
Compare Psychologist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Claudia Mosier, PSY.D.'s specialty? ▼
Claudia Mosier, PSY.D. specializes in Psychologist and practices in Chicago, Illinois. Credentials: PSY.D..
How much does Claudia Mosier, PSY.D. prescribe under Medicare Part D? ▼
In 2024, Claudia Mosier, PSY.D. wrote 406 Medicare Part D claims totaling $11K in drug costs for 41 beneficiaries.
Where is Claudia Mosier, PSY.D. located? ▼
Claudia Mosier, PSY.D. is located at 8 S MICHIGAN AVE, Chicago, IL, 60603. Phone: (773) 972-2405.
What is Claudia Mosier, PSY.D.'s NPI number? ▼
Claudia Mosier, PSY.D.'s National Provider Identifier (NPI) is 1336261643, issued on 04/06/2007.
How many Psychologist providers are there in the US? ▼
There are 48,221 Psychologist providers across 56 states in the US. The average Psychologist provider writes 741 Medicare Part D claims per year.
What drugs does Claudia Mosier, PSY.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Claudia Mosier, PSY.D.'s most frequently prescribed drugs include Quetiapine Fumarate, Fluoxetine Hcl, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Claudia Mosier, PSY.D. accept Medicare? ▼
Claudia Mosier, PSY.D. appears in CMS Medicare data with 406 Part D claims and 41 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Claudia Mosier, PSY.D.'s credentials? ▼
Claudia Mosier, PSY.D.'s NPI is 1336261643 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.