Dr. Deron J. Tessier, MD
- Part D claims, 2024
- 67
- Industry payments
- $8,394
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-3910
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fontana Medical Center
Fontana, California
Find Dr. Tessier'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. Deron J. Tessier is a general surgeon in Fontana, California
Dr. Tessier practices at Fontana Medical Center in Fontana, California.
Dr. Tessier's NPI, 1902881469, was assigned on December 7, 2005. Dr. Tessier graduated from University of California, Irvine, California College of Medicine in 2000. Dr. Tessier holds Missouri license 2006009472.
- NPI
- 1902881469NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133014749
- NPI enumeration date
- December 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Deron J. Tessier practices at Fontana Medical Center in Fontana, California
Dr. Tessier's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Deron J. Tessier is affiliated with 2 sites of care and 1 medical group
Dr. Tessier's primary practice is Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Tessier to 1 more group practice or clinic, 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. Deron J. Tessier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tessier practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Deron J. Tessier is one of 2,926 general surgeons in California
Surgery is Dr. Tessier's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Tessier is licensed in Missouri.
Specialties and state licenses
- Surgery, MissouriPrimary
General surgeons near Dr. Tessier
Counts of general surgeons 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. Deron J. Tessier's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Tessier's median patient age at 50, with 66% women.
Dr. Tessier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
Dr. Deron J. Tessier wrote 67 Medicare Part D claims in 2024
In 2024, Dr. Tessier wrote 67 Medicare Part D claims for 32 patients. 99% of them were for generic drugs. CMS names the drug for 40 of them, across 3 drugs with 11 or more claims each, at $242 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Tessier's Part D claims by kind of drug, 2024
- Generic66 claims99%
- Brand-name and other1 claims1%
Dr. Tessier's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tessier's Part D claims, 2024
- Opioids36%24 of 67 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 112024: 40264%
Drugs named by CMS: 3 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Deron J. Tessier offers telehealth to Medicare patients
Dr. Tessier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tessier as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Deron J. Tessier received $8,394 in industry payments from 2016 to 2020
CMS Open Payments shows 42 general payments to Dr. Tessier from 4 drug and device companies from 2016 to 2020. Education make up the largest share, 60% of the total. Intuitive Surgical, Inc. paid the most, $7,513.
General payments to Dr. Tessier by program year, 2016 to 2020
General payments to Dr. Tessier by kind, 2016 to 2020
- Education$5,00060%
- Travel and lodging$1,93023%
- Food and beverage$1,46317%
Companies that paid Dr. Tessier the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Deron J. Tessier graduated from University of California, Irvine, California College of Medicine
Dr. Tessier graduated from University of California, Irvine, California College of Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Deron J. Tessier'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Deron J. Tessier
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. Deron J. Tessier's NPI number?
Dr. Deron J. Tessier's NPI number is 1902881469. It was assigned on December 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Deron J. Tessier?
Dr. Deron J. Tessier is a general surgeon in Fontana, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Deron J. Tessier practice?
Dr. Tessier practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Tessier's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Tessier to 1 group practice or clinic.
What is Dr. Deron J. Tessier's office phone number?
The practice phone on file for Dr. Tessier is (909) 427-3910.
What is Dr. Deron J. Tessier's medical license number?
Dr. Tessier holds Missouri license 2006009472.
What medical group is Dr. Deron J. Tessier part of?
Dr. Tessier is linked to Southern California Permanente Medical Group.
Does Dr. Deron J. Tessier accept Medicare?
Yes. CMS lists Dr. Tessier as accepting Medicare assignment.
Does Dr. Deron J. Tessier offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tessier as offering telehealth services.
Where did Dr. Deron J. Tessier go to medical school?
Dr. Tessier graduated from University of California, Irvine, California College of Medicine in 2000.
What drugs does Dr. Deron J. Tessier prescribe most?
In 2024 Medicare Part D data, Dr. Tessier's most prescribed drugs by claims were Tramadol HCl, Gabapentin and Meloxicam.
Has Dr. Deron J. Tessier received payments from drug or device companies?
CMS Open Payments shows $8,394 in general payments to Dr. Tessier from 4 companies from 2016 to 2020. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Deron J. Tessier been practicing?
Dr. Tessier graduated from medical school in 2000, 26 years ago.
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