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

Dr. Diane Haddock, MD

Individual provider Internal Medicine Physician · NPI 1013991553

Dr. Diane Haddock, MD practises Internal Medicine in Sacramento, California. Graduated from University of Vermont College of Medicine in 2003, 23 years ago. Practices with University of Vermont Medical Center Inc, a 1,202-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
23
Trained at
University of Vermont College of Medicine
Licensed in
CA
In the registry since
2005
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

4150 V St #3116
Sacramento, CA 95817-1460
Phone: (916) 734-7080
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A88647 (CA)

Record details

NPI number1013991553
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 29, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice University Of Vermont Medical Center Inc — 1202 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 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 patients100
Services billed 247 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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. Those with a page here are linked.

Colleagues at University of Vermont Medical Center Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1202 clinicians in the practice; 12 are shown here.

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