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DAVID S. IRWIN, M.D.
NPI 1366866808
Psychiatry & Neurology - Geriatric Psychiatry in Gaithersburg, MD

Active since February 04, 2014
16220 FREDERICK RD, SUITE 308, GAITHERSBURG, MD 20877(301) 840-1077(301) 948-6199 Get Directions Write a Review

NPPES record last updated: February 4, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About David S. Irwin, M.d. NPPES

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

DAVID S. IRWIN, M.D. (NPI 1366866808) is a healthcare organization registered as a geriatric psychiatry in Gaithersburg, Maryland and active in the NPI registry since February 2014. The organization lists Julie Jaster, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1366866808
Entity TypeOrganization
Primary Taxonomy2084P0805X
Legal Business NameDAVID S. IRWIN, M.D.,P.A.
Location Address16220 FREDERICK RD, SUITE 308Gaithersburg, MD 20877-4039
Mailing Address16220 Frederick Rd, Suite 308Gaithersburg, MD 20877-4039 · (301) 840-1077 · Fax (301) 948-6199
Phone(301) 840-1077
Fax(301) 948-6199
Organization SubpartNo
Authorized OfficialJulie JasterOffice Manager · (301) 840-1077
Enumeration DateFebruary 4, 2014
✔ NPI 1366866808 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Geriatric PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0805X
License✔ Licensed in MD · D0001714
Definition
Geriatric Psychiatry is a subspecialty with psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.
16220 FREDERICK RD, Gaithersburg, MD 20877
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Other Names 1

Doing Business AsDavid S. Irwin, M.d.

Other Identifiers 2

Medicare UPINE52135DC
Medicare PIN621812DC

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 20

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

NICOLE DASKALAKIS
Social Worker
16220 FREDERICK RD, 310
GAITHERSBURG, MD 20877
Montgomery County (301) 345-1022
MS. BARBARA J WILSON L.C.P.C.
Counselor (Professional)
16220 FREDERICK RD, SUITE 502
GAITHERSBURG, MD 20877
Montgomery County (301) 978-9750
SHANAE RICE
Social Worker
16220 FREDERICK RD, 310
GAITHERSBURG, MD 20877
Montgomery County (301) 345-1022
DR. DAVID A. DUTROW III D.M.D.
Dentist (General Practice)
16220 FREDERICK RD
GAITHERSBURG, MD 20877
Montgomery County (301) 977-9100
MADELINE SHARP
Social Worker
16220 FREDERICK RD
GAITHERSBURG, MD 20877
Montgomery County (301) 296-6100
EFRAIM S ESHAGHIAN
Counselor
16220 FREDERICK RD
GAITHERSBURG, MD 20877
Montgomery County (301) 345-1563
GINA BUONO
Social Worker (Clinical)
16220 FREDERICK RD, SUITE 310
GAITHERSBURG, MD 20877
Montgomery County (301) 345-1022
MS. ERIKA L GORDON MSW
Social Worker (Clinical)
16220 FREDERICK RD, SUITE 502
GAITHERSBURG, MD 20877
Montgomery County (301) 978-9750

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 David S. Irwin, M.D.,p.A.'s NPI number?

The NPI number for David S. Irwin, M.D.,p.A. is 1366866808. It was assigned to this organization in the NPPES registry on February 4, 2014. The provider is doing business as David S. Irwin, M.D..

Where is David S. Irwin, M.D.,p.A. located?

David S. Irwin, M.D.,p.A. is located at 16220 Frederick Rd Suite 308, Gaithersburg, MD 20877. The listed phone number is (301) 840-1077.

What is David S. Irwin, M.D.,p.A.'s specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Geriatric Psychiatry, with taxonomy code 2084P0805X.

When was this NPI record last updated?

The NPPES record for David S. Irwin, M.D.,p.A. was last updated on February 4, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.