Margaret Decker, PH.D.
Margaret Decker, PH.D. is a Psychologist in Newport Beach, CA, registered under NPI 1003058256. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Newport Beach, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.33 mi away. There is EV charging 245 ft from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 0.23 mi away, served by Birch-Corinthian. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
EV charging Tesla Supercharger 245 ft ~1 min
Convenience 7-Eleven 447 ft ~2 min
Parking 977 ft ~4 min
4255 Martingale Way, Newport Beach 92660
Transit Birch-Dove 1,025 ft ~4 min
Transit Birch-Dove 0.21 mi ~5 min
Transit Birch-Corinthian 0.23 mi ~5 min
Hotel Radisson Hotel Newport Beach 0.23 mi ~5 min
19441 Campus Drive, Santa Ana 92707
Hotel Renaissance Newport Beach Hotel 0.27 mi ~6 min
Parking 0.33 mi ~7 min
4380 Von Karman Avenue, Newport Beach 92660
Parking 0.33 mi ~7 min
4400 Campus Drive, Newport Beach 92663
Hotel Extended Stay America - Orange County - John Wayne Airport 0.38 mi ~8 min
4590 MacArthur Boulevard, Newport Beach 92660
Restaurant Bosscat Kitchen and Libations 0.39 mi ~8 min
Restaurant Taco Bell 0.42 mi ~9 min
4101 Jamboree Road, Newport Beach 92660
Mo-Su 07:00-03:00+
Restaurant Vibe Newport Beach 0.44 mi ~9 min
1000 North Bristol Street, Newport Beach 92660
Mo-Fr 08:00-19:00; Sa-Su 08:00-16:00
Coffee Starbucks 0.47 mi ~10 min
4551 Jamboree Road, Newport Beach 92660
Mo-Fr 05:00-18:00; Sa,Su 06:00-16:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| PSY12013 | CA | Psychologist primary |
This provider holds licence PSY12013 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Psychologist covers
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public. NUCC Health Care Provider Taxonomy, code 103T00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003058256 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 2, 2009 |
| Last updated | Jun 25, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PH.D. |
| Practice address |
1600 DOVE ST SUITE 140 Newport Beach, CA 92660 (949) 922-1529 Fax (949) 809-5779 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 5 | 8 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 5 | 7 | 2 | 1 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.