DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) – Clinical Neuropsychologist, NPI 1235199308

DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) is a healthcare provider. based in Denver, Colorado. specializing in CLINICAL PSYCHOLOGIST. They hold the professional credentials PHD. They hold a License No. 2499 (CO). The NPI Number for DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) is 1235199308

Main info

Female
27 Years Of Experience
Accepts Medicare Assignment
Name
DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD)
NPI
1235199308
Phone
(303) 399-8020
Address
1055 CLERMONT ST
Enumeration Date
24 March 2006
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
OTHER
Secondary Phone
7207771234
Graduation Year
1999 (27 years ago)
PAC ID
8921372582
Group Practice PAC ID
3476465667
Professional Enrollment ID
I20170920001377
Address ID
CO800457106AU13123AVEX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

747 CLINICAL PSYCHOLOGIST in CO

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Provider Addresses for DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD)

  • Denver Veterans Affairs Medical Center, 1055, Clermont Street, Denver, Denver County, Colorado, 80220, United States

    DENVER VAMC #116B

    DENVER, CO 80220

    Phone: (303) 399-8020

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2017-09-20

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20170920001377IClinical PsychologistCOTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 80220)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3476465667View full group profile
NameSpecialtyState
-CO
Family PracticeCO
Advanced Heart Failure And Transplant Cardiology, Cardiac Electrophysiology, Cardiovascular Disease (Cardiology), Internal MedicineCO
Emergency MedicineCO
Emergency MedicineCO
-CO
-CO
Emergency MedicineCO
-CO
-CO

Reviews

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Frequently asked questions

Can I use this page to confirm DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD)'s NPI?
Yes. DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) is listed with NPI 1235199308 in the public NPI dataset.
Does CMS list DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) as active?
Yes — DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) is active in the NPI listing used on this page.
What is DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD)'s primary classification?
Clinical Neuropsychologist is the headline specialty for DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) here. Clinical services aligned with this taxonomy classification.
Does DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) list a practice location?
Patients near Denver, Colorado may find DR. CATHARINE HOWLAND JOHNSTON-BROOKS (PHD) in results; validate coverage separately.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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