DR. MARY KATHERINE GERRARD PHD
NPI 1538725452
Psychologist - Clinical in Columbia, MD

Q: What is Mary Gerrard's NPI number?

The NPI number for Mary Gerrard is 1538725452. It was assigned to this individual provider in the NPPES registry on May 16, 2019.

Q: What is Mary Gerrard's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mary Gerrard was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.

Active since May 16, 2019PECOS Enrolled

9810 PATUXENT WOODS DR STE F, COLUMBIA, MD 21046(443) 923-3871 Get Directions Write a Review

NPPES record last updated: June 4, 2025. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Jun 4, 2025, May 16, 2019 (2 updates tracked since 2019).

On this page

About Dr. Mary Katherine Gerrard Phd NPPES

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

DR. MARY KATHERINE GERRARD PHD (NPI 1538725452) is an individual clinical provider in Columbia, Maryland, licensed in Maryland (07383) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1538725452

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. MARY KATHERINE GERRARDCredential: PHD

Location Address9810 PATUXENT WOODS DR STE FColumbia, MD 21046-1595

Mailing Address1211 S Conkling St Apt 356Baltimore, MD 21224-5346 · (513) 319-4889

Phone(443) 923-3871

Sole ProprietorNo

Medical School CMSOtherGraduated 2023

Enumeration DateMay 16, 2019

Last NPPES UpdateJune 4, 20252 updates tracked since enumeration

NPPES CertifiedJune 4, 2025

✔ NPI 1538725452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in MD · 07383

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.

Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X

9810 PATUXENT WOODS DR STE F, Columbia, MD 21046

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mary Katherine Gerrard Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5092217786

PECOS Enrollment IDI20250903002149

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21046 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

$183.44 typical visit price

range $60.73 – $183.44

Typical copayment $45.86 (range $15.18 – $45.86)

Most-billed visit code 99205

Established Patient

$106.59 typical visit price

range $19.60 – $149.17

Typical copayment $26.64 (range $4.90 – $37.29)

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.

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 Mary Gerrard's NPI number?

The NPI number for Mary Gerrard is 1538725452. It was assigned to this individual provider in the NPPES registry on May 16, 2019.

Where is Mary Gerrard located?

Mary Gerrard practices at 9810 Patuxent Woods Dr Ste F, Columbia, MD 21046. The listed phone number is (443) 923-3871.

What is Mary Gerrard's specialty?

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

Is Mary Gerrard enrolled in Medicare?

Yes. Mary Gerrard is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Gerrard was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.