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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. HUGH TRENT MACKAY M.D.
NPI 1346232261
Obstetrics & Gynecology in Bethesda, MD

Active since August 17, 2005
8901 WISCONSIN AVE., DEPT. OF OBSTETRICS AND GYNECOLOGY, BETHESDA, MD 20889(301) 295-1128(301) 295-0674 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Hugh Trent Mackay M.d. NPPES

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

DR. HUGH TRENT MACKAY M.D. (NPI 1346232261) is an individual obstetrics & gynecology provider in Bethesda, Maryland, licensed in Georgia (037858) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1346232261
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameDR. HUGH TRENT MACKAYCredential: M.D.
Location Address8901 WISCONSIN AVE., DEPT. OF OBSTETRICS AND GYNECOLOGYBethesda, MD 20889-0001
Mailing Address6100 Executive Blvd., Suite 8b13Bethesda, MD 20892-0001 · (301) 435-6988 · Fax (301) 480-1972
Phone(301) 295-1128
Fax(301) 295-0674
Sole ProprietorNo
Enumeration DateAugust 17, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1346232261 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in GA · 037858
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
8901 WISCONSIN AVE., Bethesda, MD 20889
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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.

YOUNG J BECK PHARMACIST
Pharmacist
8901 WISCONSIN AVE.
BETHESDA, MD 20889
Montgomery County (301) 295-2121
DR. GRACE M LENTS DPM
Podiatrist (Primary Podiatric Medicine)
8901 WISCONSIN AVE.
BETHESDA, MD 20889
Montgomery County (301) 295-3037
PAULA LOUISE SORENSEN LCSW-C
Social Worker (Clinical)
8901 WISCONSIN AVE., BLDG. 10, 7W
BETHESDA, MD 20889
Montgomery County (301) 295-4138
DR. JOSEPH C YANG D.D.S.
Dentist (Periodontics)
8901 WISCONSIN AVE.
BETHESDA, MD 20889
Montgomery County (301) 295-0077
DR. KEITH ALAN ASHBY R.PH.,PHARM.D
Pharmacist
8901 WISCONSIN AVE., PHARMACY SERVICE
BETHESDA, MD 20889
Montgomery County (301) 295-2121
ROBERTA PROFFITT LAVIN APRN, BC
Registered Nurse
8901 WISCONSIN AVE.
BETHESDA, MD 20889
Montgomery County (301) 295-4611
MS. ABIGAIL B KUHN DENTAL HYGIENIST
Dental Hygienist
8901 WISCONSIN AVE.
BETHESDA, MD 20889
Montgomery County (301) 295-5411
DR. WILLIAM MARTIN YUDT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
8901 WISCONSIN AVE., NATIONAL NAVAL MEDICAL CENTER, RADIOLOGY DEPT.
BETHESDA, MD 20889
Montgomery County (301) 295-5050

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 Hugh Mackay's NPI number?

The NPI number for Hugh Mackay is 1346232261. It was assigned to this individual provider in the NPPES registry on August 17, 2005.

Where is Hugh Mackay located?

Hugh Mackay practices at 8901 Wisconsin Ave. Dept. Of Obstetrics And Gynecology, Bethesda, MD 20889. The listed phone number is (301) 295-1128.

What is Hugh Mackay's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Hugh Mackay was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 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.