Dr. Nancy Byatt, DO
- Industry payments
- $1,925
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-0254
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Byatt's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nancy Byatt is a psychiatrist in Mendon, Massachusetts
Dr. Byatt practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Byatt's NPI, 1487635736, was assigned on November 11, 2005. Dr. Byatt holds Massachusetts license 225164.
- NPI
- 1487635736NPI Registry (opens in a new tab)
- NPI enumeration date
- November 11, 2005
- NPI status
- Active
- Practice phone
- (508) 334-0254
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Nancy Byatt practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Byatt's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-0254.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-0254
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nancy Byatt is affiliated with 1 site of care and 2 medical groups
Dr. Byatt's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Byatt to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Nancy Byatt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Byatt practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nancy Byatt is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Byatt's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Byatt is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Byatt
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nancy Byatt's patients have a median age of 84
Across all payers, Dmand AI patient panel data puts Dr. Byatt's median patient age at 84, with 0% women.
Dr. Byatt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 84
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Nancy Byatt received $1,925 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Byatt from 1 drug or device company in 2017. Consulting fees make up the largest share, 100% of the total. Janssen Research & Development, LLC paid the most, $1,925.
Companies that paid Dr. Byatt the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Nancy Byatt's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nancy Byatt
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nancy Byatt's NPI number?
Dr. Nancy Byatt's NPI number is 1487635736. It was assigned on November 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Nancy Byatt?
Dr. Nancy Byatt is a psychiatrist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Nancy Byatt practice?
Dr. Byatt practices at 55 North Ave, Mendon, MA 01756. Dr. Byatt's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Byatt to 1 medical group.
What is Dr. Nancy Byatt's office phone number?
The practice phone on file for Dr. Byatt is (508) 334-0254.
What is Dr. Nancy Byatt's medical license number?
Dr. Byatt holds Massachusetts license 225164.
What medical group is Dr. Nancy Byatt part of?
Dr. Byatt is linked to UMass Memorial Medical Group. Dmand AI links Dr. Byatt to 1 more medical group.
Has Dr. Nancy Byatt received payments from drug or device companies?
CMS Open Payments shows $1,925 in general payments to Dr. Byatt from 1 company from 2017 to 2017. The largest total came from Janssen Research & Development, LLC.
How long has Dr. Nancy Byatt been practicing?
Dr. Byatt's NPI was assigned in 2005.
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