Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark Alan Oldham, MD

Individual provider Psychiatry Physician · NPI 1841420726

Dr. Mark Alan Oldham, MD practises Psychiatry in New Haven, Connecticut. Qualified in 2009, 17 years ago. Practices with University of Rochester Department of Psychiatry Clinical Group, a 80-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Connecticut, Massachusetts and New York.

Years since qualifying
17
Licensed in
CT, MA, NY
In the registry since
2009
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20 York St Fitkin 615
New Haven, CT 06510
Phone: (203) 785-2618
Fax: (203) 737-2221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 860 Harrison Ave, Boston, MA 02118-4002 — (617) 414-4238

Specialties & licences

Psychosomatic Medicine Physician (primary) Taxonomy 2084P0015X · Licence 051681 (CT)
Psychiatry Physician Taxonomy 2084P0800X · Licence AH 1918018-5244 (MA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 291484 (NY)

Record details

NPI number1841420726
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 25, 2009
Last updated in NPPESJune 29, 2023

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice University Of Rochester Department Of Psychiatry Clinical Group — 80 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients19
Services billed 22 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University of Rochester Department of Psychiatry Clinical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 80 clinicians in the practice; 12 are shown here.

Other providers in New Haven