Dr. Aaron Jacob Watson, MD
- Part D claims, 2024
- 215
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 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. Watson'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. Aaron Jacob Watson is a psychiatrist in Fontana, California
Dr. Watson practices at Fontana Medical Center in Fontana, California.
Dr. Watson's NPI, 1386273027, was assigned on April 4, 2020. Dr. Watson graduated from UC Riverside School of Medicine in 2020. Dr. Watson holds California license A178832.
- NPI
- 1386273027NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800284365
- NPI enumeration date
- April 4, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-3910
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Aaron Jacob Watson practices at Fontana Medical Center in Fontana, California
Dr. Watson'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. Aaron Jacob Watson is affiliated with 2 sites of care and 1 medical group
Dr. Watson'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. Watson 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. Aaron Jacob Watson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Watson 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. Aaron Jacob Watson is one of 6,803 psychiatrists in California
Psychiatry is Dr. Watson's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Watson is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Watson is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Watson
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. Aaron Jacob Watson's patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Dr. Watson's median patient age at 34, with 66% women.
Dr. Watson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women66%
- Men32%
Source: Dmand AI Patient Panel Data
Dr. Aaron Jacob Watson wrote 215 Medicare Part D claims in 2024
In 2024, Dr. Watson wrote 215 Medicare Part D claims for 51 patients. 94% of them were for generic drugs. CMS names the drug for 97 of them, across 6 drugs with 11 or more claims each, at $2,377 in total drug cost. In 2023, CMS named 383 claims across 15 drugs.
Dr. Watson's Part D claims by kind of drug, 2024
- Generic203 claims94%
- Brand-name12 claims6%
Dr. Watson'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. Watson's Part D claims, 2024
- Antipsychotics, patients 65 and over12%25 of 215 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: 3832024: 9775%
Drugs named by CMS: 6 in 2024, 15 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
How Dr. Aaron Jacob Watson takes part in Medicare
Dr. Watson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Aaron Jacob Watson graduated from UC Riverside School of Medicine
Dr. Watson graduated from UC Riverside School of Medicine in 2020.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Aaron Jacob Watson accepts plans from 1 insurance carrier
Dr. Watson is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Watson accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Aaron Jacob Watson'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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Aaron Jacob Watson
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. Aaron Jacob Watson's NPI number?
Dr. Aaron Jacob Watson's NPI number is 1386273027. It was assigned on April 4, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Aaron Jacob Watson?
Dr. Aaron Jacob Watson is a psychiatrist in Fontana, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Aaron Jacob Watson practice?
Dr. Watson practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Watson's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Watson to 1 group practice or clinic.
What is Dr. Aaron Jacob Watson's office phone number?
The practice phone on file for Dr. Watson is (909) 427-3910.
What is Dr. Aaron Jacob Watson's medical license number?
Dr. Watson holds California license A178832.
What medical group is Dr. Aaron Jacob Watson part of?
Dr. Watson is linked to Southern California Permanente Medical Group.
Does Dr. Aaron Jacob Watson accept Medicare?
Yes. CMS lists Dr. Watson as accepting Medicare assignment.
Is Dr. Aaron Jacob Watson board certified?
Yes. Dr. Watson is board certified in psychiatry by the American Board of Psychiatry and Neurology.
Where did Dr. Aaron Jacob Watson go to medical school?
Dr. Watson graduated from UC Riverside School of Medicine in 2020.
What drugs does Dr. Aaron Jacob Watson prescribe most?
In 2024 Medicare Part D data, Dr. Watson's most prescribed drugs by claims were Aripiprazole, Trazodone HCl and Escitalopram Oxalate.
How long has Dr. Aaron Jacob Watson been practicing?
Dr. Watson graduated from medical school in 2020, 6 years ago.
What insurance does Dr. Aaron Jacob Watson accept?
Dr. Watson is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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