NPI registry status
Active
2026 NPPES data Cognitive & Behavioral Psychologist NPI 1295805133 PHD
Verify on CMS → Mike Tamassian, PHD
Cognitive & Behavioral Psychologist in Glendale, 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 2,688 in Cognitive & Behavioral 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.
What the federal data shows
Mike Tamassian, PHD is a Cognitive & Behavioral Psychologist in Glendale, California, listed in the federal CMS National Provider Identifier registry.
- #159
- Cognitive & Behavioral 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.
Federal trust snapshot
What official records show about Mike Tamassian, PHD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1295805133), first enumerated 11/08/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
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
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Mike Tamassian, PHD's individual license status. Verify directly with the state medical board.
Source: MBC 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.
Compare Tamassian with other Cognitive & Behavioral Psychologist providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Erik Abell, PH.D. Costa Mesa, CA
- Dr. Jean-Frederic Aboudarham, PH. D. Mountain View, CA
- Dr. Lisa Acker, PSYD Santa Monica, CA
- Dr. Niloofar Afari, PHD San Diego, CA
- Dr. Adrianne Ahern Grundland, PHD San Diego, CA
- Alicia Alcantar Camarillo, CA
Other specialties in Glendale: Behavior Technician (979) · Marriage & Family Therapist (257) · Pharmacist (254) · Family Nurse Practitioner (152)
CMS NPPES provider registry desk
NPI 1295805133 · Cognitive & Behavioral Psychologist
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1295805133
- ENUM-LEGACY 2006
- TAX-NARROW 2,688
- RX-NONE No Part D
- BOOK-THIN 342 in California
- PHOTO-ENUM Patricia Hardner, MA · 2006
What does the federal data show about Mike Tamassian, PHD?
Quality data not reportedPrimary specialty
Cognitive & Behavioral Psychologist
Specialty distribution in California
How Cognitive & Behavioral Psychologist compares to other specialties among California 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 Cognitive & Behavioral 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 | 1295805133 |
|---|---|
| Specialty | Cognitive & Behavioral Psychologist |
| Credentials | PHD |
| Gender | Male |
| NPI Issued | 11/08/2006 |
Hospital and facility affiliations
Facilities where Mike Tamassian, PHD 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.
California Therapy Center And Psychological Services Inc
Glendale, 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 Mike Tamassian, PHD. To verify Mike Tamassian, PHD'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.
More Cognitive & Behavioral Psychologist in CA →
All providers in California →
Compare specialties →
Cognitive & Behavioral Psychologist Overview
How Mike Tamassian, PHD fits within the Cognitive & Behavioral Psychologist landscape nationally.
2,688
Cognitive & Behavioral Psychologist Providers in US
54
States with Cognitive & Behavioral Psychologist
1,366
Avg Claims per Provider
Nationwide Cognitive & Behavioral Psychologist peers with similar MIPS or enrollment year
Two federal-record peer sets for Tamassian, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Cognitive & Behavioral Psychologist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Tamassian.
One of 342 Cognitive & Behavioral Psychologist providers enrolled in California, 11 are shown on this page.
Dr. Richard Allen
PHD
Santa Cruz, CA
Ifan Ambrosius
PPS
Laguna Niguel, CA
Dr. Amar Anand
MD
Vallejo, CA
Dr. Keith Andersen
PH.D.
Bishop, CA
Chad Andreoni
M.S., L.E.P.
Modesto, CA
Compare Cognitive & Behavioral Psychologist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mike Tamassian, PHD's specialty? ▼
Mike Tamassian, PHD specializes in Cognitive & Behavioral Psychologist and practices in Glendale, California. Credentials: PHD.
Where is Mike Tamassian, PHD located? ▼
Mike Tamassian, PHD is located at 1101 N PACIFIC AVE, Glendale, CA, 91202. Phone: (818) 396-5343.
What is Mike Tamassian, PHD's NPI number? ▼
Mike Tamassian, PHD's National Provider Identifier (NPI) is 1295805133, issued on 11/08/2006.
How many Cognitive & Behavioral Psychologist providers are there in the US? ▼
There are 2,688 Cognitive & Behavioral Psychologist providers across 54 states in the US. The average Cognitive & Behavioral Psychologist provider writes 1,366 Medicare Part D claims per year.
Does Mike Tamassian, PHD accept Medicare? ▼
Mike Tamassian, PHD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mike Tamassian, PHD's credentials? ▼
Mike Tamassian, PHD's NPI is 1295805133 with credentials PHD. 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.
- 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.