Dr. John W. Fox Jr., MD
- Medicare services, 2019
- 163
- Part D claims, 2024
- 32
- Industry payments
- $258
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 4110 Holt Blvd, Montclair, CA 91763
- Practice phone
- Call (818) 599-8998
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dignity Adult Day Health Care Center
Montclair, California
Find Dr. Fox'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. John W. Fox Jr. is an internist in Montclair, California
Dr. Fox practices at Dignity Adult Day Health Care Center in Montclair, California.
Dr. Fox's NPI, 1316901408, was assigned on April 14, 2006. Dr. Fox graduated from Loyola University Chicago Stritch School of Medicine in 1979. Dr. Fox holds California license G43378.
- NPI
- 1316901408NPI Registry (opens in a new tab)
- NPI enumeration date
- April 14, 2006
- NPI status
- Active
- Practice phone
- (818) 599-8998
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John W. Fox Jr. practices at Dignity Adult Day Health Care Center in Montclair, California
Dr. Fox's primary practice is Dignity Adult Day Health Care Center, at 4110 Holt Blvd, Montclair, CA 91763 in San Bernardino County. The practice phone is (818) 599-8998.
- Dignity Adult Day Health Care Center4110 Holt Blvd, Montclair, CA 91763 · San Bernardino CountyPhone(818) 599-8998
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John W. Fox Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Fox's primary practice is Dignity Adult Day Health Care Center in Montclair, California. Dmand AI also links Dr. Fox to 1 group practice or clinic and 1 medical group, each 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. John W. Fox Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fox practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Adult Day Health Care Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John W. Fox Jr. is one of 16,751 internists in California
Internal medicine is Dr. Fox's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Fox is board certified in internal medicine by the American Board of Internal Medicine. Dr. Fox is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Fox
Counts of internists 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. John W. Fox Jr. billed Medicare for 163 services in 2019
CMS data shows 163 Medicare services from Dr. Fox across 1 procedure code in 2019. Medicare paid $9,690 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Fox's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 1,0282019: 16384%
- Tests and treatments
- 2018: 172019: 0100%
- Other services
- 2018: 272019: 0100%
Dr. Fox compared with the California median for internists, 2019
- Dr. Fox
- California median
- Medicare services
- 163vs 36155% below
- Part D claims
- 11vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Fox's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fox and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John W. Fox Jr.'s patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Fox's median patient age at 72, with 23% women.
Dr. Fox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women23%
- Men77%
Source: Dmand AI Patient Panel Data
Dr. John W. Fox Jr. wrote 32 Medicare Part D claims in 2024
In 2024, Dr. Fox wrote 32 Medicare Part D claims. 94% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $103 in total drug cost. In 2019, CMS named 93 claims across 6 drugs.
Dr. Fox's Part D claims by kind of drug, 2024
- Generic30 claims94%
- Brand-name and other2 claims6%
Dr. Fox'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.
Part D claims for drugs CMS names, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 932024: 1188%
Drugs named by CMS: 1 in 2024, 6 in 2019.
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
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Dr. John W. Fox Jr. received $258 in industry payments from 2017 to 2018
CMS Open Payments shows 15 general payments to Dr. Fox from 8 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $54.
General payments to Dr. Fox by program year, 2017 to 2018
Companies that paid Dr. Fox the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John W. Fox Jr. graduated from Loyola University Chicago Stritch School of Medicine
Dr. Fox graduated from Loyola University Chicago Stritch School of Medicine in 1979.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John W. Fox Jr. accepts plans from 11 insurance carriers
Dr. Fox is in network with 11 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +3 more carriersWith a free account
Plan types Dr. Fox accepts, by number of carriers
- PPO7
- HMO6
- EPO3
- POS2
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. John W. Fox Jr.'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| Industry payments | Open Payments (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. John W. Fox Jr.
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. John W. Fox Jr.'s NPI number?
Dr. John W. Fox Jr.'s NPI number is 1316901408. It was assigned on April 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John W. Fox Jr.?
Dr. John W. Fox Jr. is an internist in Montclair, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John W. Fox Jr. practice?
Dr. Fox practices at 4110 Holt Blvd, Montclair, CA 91763. Dr. Fox's primary practice is Dignity Adult Day Health Care Center in Montclair, California. Dmand AI also links Dr. Fox to 1 group practice or clinic and 1 medical group.
What is Dr. John W. Fox Jr.'s office phone number?
The practice phone on file for Dr. Fox is (818) 599-8998.
What is Dr. John W. Fox Jr.'s medical license number?
Dr. Fox holds California license G43378.
Does Dr. John W. Fox Jr. accept Medicare?
Yes. CMS data shows Dr. Fox billed Medicare for 163 services in 2019.
Is Dr. John W. Fox Jr. board certified?
Yes. Dr. Fox is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. John W. Fox Jr. bill to Medicare?
In 2019, Dr. Fox's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. John W. Fox Jr. go to medical school?
Dr. Fox graduated from Loyola University Chicago Stritch School of Medicine in 1979.
What drugs does Dr. John W. Fox Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Fox's most prescribed drugs by claims were Donepezil HCl.
Show 3 more questionsShow fewer questions
Has Dr. John W. Fox Jr. received payments from drug or device companies?
CMS Open Payments shows $258 in general payments to Dr. Fox from 8 companies from 2017 to 2018. The largest total came from Astellas Pharma US Inc.
How long has Dr. John W. Fox Jr. been practicing?
Dr. Fox graduated from medical school in 1979, 47 years ago.
What insurance does Dr. John W. Fox Jr. accept?
Dr. Fox is in network with 11 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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