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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DONALD S MACMILLAN PA
NPI 1881659167
Physician Assistant in New Haven, CT

Active since April 19, 2006
800 HOWARD AVE, YALE PHYSICIANS BLDG, NEW HAVEN, CT 06519(203) 785-2140(203) 785-6414 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Donald S Macmillan Pa NPPES

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

DONALD S MACMILLAN PA (NPI 1881659167) is an individual physician assistant in New Haven, Connecticut, licensed in Connecticut (000555) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1881659167
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameDONALD S MACMILLANCredential: PA
Location Address800 HOWARD AVE, YALE PHYSICIANS BLDGNew Haven, CT 06519-1369
Mailing Address300 George St, Po Box 9805New Haven, CT 06511-6624 · (203) 785-7998 · Fax (203) 785-6414
Phone(203) 785-2140
Fax(203) 785-6414
Sole ProprietorNo
Enumeration DateApril 19, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1881659167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CT · 000555
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

800 HOWARD AVE, New Haven, CT 06519
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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.

SCOTT NICHOLAS GETTINGER MD
Internal Medicine (Medical Oncology)
800 HOWARD AVE, YALE PHYSICIANS BUILDING - 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4191
ANTOINETTE ZOLLO WEINSTEIN LCSW
Social Worker
800 HOWARD AVE, YALE PHYSICIANS BUILDING
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-7998
HARI ANANT DESHPANDE MD
Internal Medicine (Interventional Cardiology)
800 HOWARD AVE, YPB - 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4191
SUSAN M RICHMAN MD
Obstetrics & Gynecology
800 HOWARD AVE, YALE PHYSICIAN'S BUILDING, 3RD FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4176
KERRY S RUSSELL MD
Internal Medicine (Cardiovascular Disease)
800 HOWARD AVE, YALE PHYSICIANS' BUILDING, 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4114
RICHARD STEVEN BERCIK MD
Obstetrics & Gynecology (Gynecology)
800 HOWARD AVE, YALE PHYSICIANS BUILDING- 3RD FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4176
STEVEN PFAU MD
Internal Medicine (Cardiovascular Disease)
800 HOWARD AVE, YALE PHYSICIANS' BUILDING; DEPT. OF CARDIOLOGY
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-4191
MICHAEL DIGIOVANNA MD
Internal Medicine (Medical Oncology)
800 HOWARD AVE, YALE PHYSICIANS BUILDING - 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4191

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 Donald Macmillan's NPI number?

The NPI number for Donald Macmillan is 1881659167. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is Donald Macmillan located?

Donald Macmillan practices at 800 Howard Ave Yale Physicians Bldg, New Haven, CT 06519. The listed phone number is (203) 785-2140.

What is Donald Macmillan's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

When was this NPI record last updated?

The NPPES record for Donald Macmillan was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.