Dr. Jonathan Henry Segal, MD
- Part D claims, 2016
- 18
- Hospital affiliations
- 1
- Industry payments
- $53
- State licenses
- 2
- Year NPI issued
- 2005
- Practice address
- 10535 Hospital Way, Mather, CA 95655
- Practice phone
- Call (800) 382-8387
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Segal'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. Jonathan Henry Segal is a nephrologist in Mather, California
Dr. Segal practices at Sacramento VA Medical Center in Mather, California, part of Veterans Health Administration.
Dr. Segal's NPI, 1780666164, was assigned on November 18, 2005. Dr. Segal graduated from Renaissance School of Medicine at Stony Brook University in 1984. Dr. Segal holds California license G59448.
- NPI
- 1780666164NPI Registry (opens in a new tab)
- NPI enumeration date
- November 18, 2005
- NPI status
- Active
- Practice phone
- (800) 382-8387
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathan Henry Segal practices at Sacramento VA Medical Center in Mather, California
Dr. Segal's primary practice is Sacramento VA Medical Center, at 10535 Hospital Way, Mather, CA 95655 in Sacramento County. The practice phone is (800) 382-8387.
- Sacramento VA Medical Center10535 Hospital Way, Mather, CA 95655 · Sacramento CountyPhone(800) 382-8387
Source: Dmand AI Affiliation Data
Dr. Jonathan Henry Segal is affiliated with 1 site of care
Dr. Segal's primary practice is Sacramento VA Medical Center in Mather, California, part of Veterans Health Administration. Dr. Segal's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan Henry Segal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Segal practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sacramento VA Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Veterans Health Administration and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jonathan Henry Segal is one of 1,401 nephrologists in California
Nephrology is Dr. Segal's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Segal is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Segal's licenses on file in 2 states: California and Florida.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
- Florida license
Nephrologists near Dr. Segal
Counts of nephrologists 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. Jonathan Henry Segal's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Segal's median patient age at 57, with 40% women.
Dr. Segal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Jonathan Henry Segal wrote 18 Medicare Part D claims in 2016
In 2016, Dr. Segal wrote 18 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $828 in total drug cost.
Dr. Segal's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Jonathan Henry Segal received $53 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Segal from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Vertex Pharmaceuticals Incorporated paid the most, $53.
Companies that paid Dr. Segal the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan Henry Segal graduated from Renaissance School of Medicine at Stony Brook University
Dr. Segal graduated from Renaissance School of Medicine at Stony Brook University in 1984.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan Henry Segal'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Jonathan Henry Segal
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. Jonathan Henry Segal's NPI number?
Dr. Jonathan Henry Segal's NPI number is 1780666164. It was assigned on November 18, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Henry Segal?
Dr. Jonathan Henry Segal is a nephrologist in Mather, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Jonathan Henry Segal practice?
Dr. Segal practices at 10535 Hospital Way, Mather, CA 95655. Dr. Segal's primary practice is Sacramento VA Medical Center in Mather, California, part of Veterans Health Administration.
What is Dr. Jonathan Henry Segal's office phone number?
The practice phone on file for Dr. Segal is (800) 382-8387.
What is Dr. Jonathan Henry Segal's medical license number?
Dr. Segal holds California license G59448, one of the licenses on file in 2 states.
Which states has Dr. Jonathan Henry Segal been licensed in?
Dmand AI has state licenses on file for Dr. Segal in California (1987 to 2026) and Florida (since 1991).
Which hospitals is Dr. Jonathan Henry Segal affiliated with?
Dr. Segal practices at Sacramento VA Medical Center in Mather, California.
Is Dr. Jonathan Henry Segal board certified?
Yes. Dr. Segal is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Jonathan Henry Segal go to medical school?
Dr. Segal graduated from Renaissance School of Medicine at Stony Brook University in 1984.
What drugs does Dr. Jonathan Henry Segal prescribe most?
In 2016 Medicare Part D data, Dr. Segal's most prescribed drugs by claims were Quetiapine Fumarate.
Has Dr. Jonathan Henry Segal received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Dr. Segal from 1 company from 2024 to 2024. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Dr. Jonathan Henry Segal been practicing?
Dr. Segal graduated from medical school in 1984, 42 years ago.
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