MS. MARY HOLLIS JOHNSTON (PH.D.) – Psychologist, NPI 1790760023

MS. MARY HOLLIS JOHNSTON (PH.D.) is a healthcare provider. based in Chicago, Illinois. specializing in Psychologist. They hold the professional credentials PH.D.. The NPI Number for MS. MARY HOLLIS JOHNSTON (PH.D.) is 1790760023

Main info

Female
Sole Proprietor
51 Years Of Experience
Accepts Medicare Assignment
Name
MS. MARY HOLLIS JOHNSTON (PH.D.)
NPI
1790760023
Phone
(773) 624-8181
Address
4820 S GREENWOOD AVE
Enumeration Date
9 December 2005
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
OTHER
Secondary Phone
7736242540
Graduation Year
1975 (51 years ago)
PAC ID
4486814530
Professional Enrollment ID
I20120327000564
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience45
Completeness75
Years active:20State licenses:0Digital endpointsOther names

Loading map...

Provider Addresses for MS. MARY HOLLIS JOHNSTON (PH.D.)

  • 4820, South Greenwood Avenue, North Kenwood, Kenwood, Chicago, Hyde Park Township, Cook County, Illinois, 60615, United States

    CHICAGO, IL 606151914

    Phone: (773) 624-8181

    Fax: (773) 624-8181

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

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.

No Medicare enrollment or revalidation data available for this provider in our database.

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 60615)

Loading plans...

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

What is the 10-digit NPI for MS. MARY HOLLIS JOHNSTON (PH.D.)?
MS. MARY HOLLIS JOHNSTON (PH.D.) — NPI 1790760023 — is the standard way to identify this listing.
Does the file indicate MS. MARY HOLLIS JOHNSTON (PH.D.) is practicing under active NPI?
Directory data currently reports MS. MARY HOLLIS JOHNSTON (PH.D.) as active.
What is MS. MARY HOLLIS JOHNSTON (PH.D.) best known for clinically?
Directory data describes MS. MARY HOLLIS JOHNSTON (PH.D.) with Psychologist. Clinical services aligned with this taxonomy classification.
Where should I expect MS. MARY HOLLIS JOHNSTON (PH.D.) on a map?
Expect Chicago, Illinois as a primary anchor for MS. MARY HOLLIS JOHNSTON (PH.D.) unless the record lists multiple sites.
What does 'Individual Provider' mean on this profile?
Entity type tells you whether the number belongs to a person or an organization.

Similar Providers

Unknown Individual

Psychologist
The Corner Bakery, 676, North Saint Clair Street, Streeterville, Near North Side, Chicago, Cook County, Illinois, 60611, United States
NPI: 1669470803
1643, North Wolcott Avenue, Wicker Park, West Town, Chicago, Cook County, Illinois, 60614, United States
NPI: 1255330130

DR. DARRYL L PURE (PH.D.)

Clinical Psychologist
333, North Michigan Avenue, New East Side, Chicago, Cook County, Illinois, 60601, United States
NPI: 1497747513

Psychology Center Inc

Clinical Psychologist
10713, West Doric Circle, Palos Hills, Palos Township, Cook County, Illinois, 60465, United States
NPI: 1396735361
North Harlem Avenue, Edison Park, Chicago, Jefferson Township, Cook County, Illinois, 60631, United States
NPI: 1770573479
8001 S Western Ave
NPI: 1578546156
Wood Quail Street, Deerfield, San Antonio, Bexar County, Texas, 78248, United States
NPI: 1306822630
RML Specialty Hospital, 3435, West Van Buren Street, Fifth City, East Garfield Park, Chicago, West Chicago Township, Cook County, Illinois, 60624, United States
NPI: 1811973175