1. Home
  2. Directory
  3. California
  4. Pasadena
  5. Psychologist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RYAN G WITHERSPOON PH.D.
NPI 1851743850
Psychologist - Clinical in Pasadena, CA

Active since July 01, 2016Opted out of Medicare · through Sep 14, 2026
117 E COLORADO BLVD STE 425, PASADENA, CA 91105(626) 559-0939 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Ryan G Witherspoon Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. RYAN G WITHERSPOON PH.D. (NPI 1851743850) is an individual clinical provider in Pasadena, California, licensed in California (PSY32022) and active in the NPI registry since July 2016. He has opted out of Medicare through September 14, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1851743850
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. RYAN G WITHERSPOONCredential: PH.D.
Location Address117 E COLORADO BLVD STE 425Pasadena, CA 91105-3729
Mailing Address117 E Colorado Blvd Ste 425Pasadena, CA 91105-3729 · (626) 559-0939
Phone(626) 559-0939
Sole ProprietorYes
Enumeration DateJuly 1, 2016
Last NPPES UpdateJune 29, 2026
NPPES CertifiedJune 29, 2026
✔ NPI 1851743850 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · PSY32022
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
117 E COLORADO BLVD STE 425, Pasadena, CA 91105
Open in Google Maps ↗

Other Identifiers 1

OtherPSY32022CA · Psychologist License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Ryan G Witherspoon Ph.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 14, 2020 through September 14, 2026.

Opt-Out Effective DateSeptember 14, 2020
Opt-Out In Effect ThroughSeptember 14, 2026Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

A BETTER LIFE BY JILL
Marriage & Family Therapist
117 E COLORADO BLVD STE 425
PASADENA, CA 91105
Los Angeles County (626) 729-4677
DR. HELEN YEE HOAGLAND PH.D.
Psychologist (Clinical)
117 E COLORADO BLVD STE 425
PASADENA, CA 91105
Los Angeles County (626) 403-0820
JILL ANNE DAWSON SUMIYASU LMFT
Marriage & Family Therapist
117 E COLORADO BLVD STE 425
PASADENA, CA 91105
Los Angeles County (626) 720-4677
DAN GUTTERMAN PSYD
Psychologist
117 E COLORADO BLVD STE 425
PASADENA, CA 91105
Los Angeles County (323) 456-3870

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ryan Witherspoon's NPI number?

The NPI number for Ryan Witherspoon is 1851743850. It was assigned to this individual provider in the NPPES registry on July 1, 2016.

Where is Ryan Witherspoon located?

Ryan Witherspoon practices at 117 E Colorado Blvd Ste 425, Pasadena, CA 91105. The listed phone number is (626) 559-0939.

What is Ryan Witherspoon's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Ryan Witherspoon enrolled in Medicare?

No. Ryan Witherspoon has opted out of Medicare through September 14, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Ryan Witherspoon was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.