Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Gregory T. Ackroyd, MD

Individual provider Sleep Medicine (Psychiatry & Neurology) Physician · NPI 1538192984

Dr. Gregory T. Ackroyd, MD is a Neurology in Santa Rosa, California. Graduated from New York University School of Medicine in 2000, 26 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
26
Trained at
New York University School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

585 W College Ave
Santa Rosa, CA 95401-5000
Phone: (707) 525-9616
Fax: (707) 526-2358
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sleep Medicine (Psychiatry & Neurology) Physician (primary) Taxonomy 2084S0012X · Licence A84348 (CA)
Neurology Physician Taxonomy 2084N0400X · Licence A84348 (CA)

Record details

NPI number1538192984
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 9, 2006
Last updated in NPPESOctober 14, 2021
Certification dateOctober 14, 2021
Mailing address585 W College Ave, Santa Rosa, CA 95401-5000

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROLOGY
Also practisesSLEEP MEDICINE
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare