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Dr. Dennis P. John, an internal medicine physician based in Valhalla, NY, practices with Westchester Medical Center Advanced Physician Services PC.
Dr. John earned his medical degree at New York Medical College in 2017 — 9 years ago.
To book an appointment, call (914) 493-6940. Dr. John's office is at 95 Grasslands Rd, Valhalla, NY 10595. He also has a listed practice location at 19 Bradhurst Ave, Hawthorne, NY 10532. He accepts Medicare assignment — useful to know if you are on traditional Medicare. Telehealth visits are listed as available.
Hospital affiliations on file with Medicare: Westchester Medical Center.
Key facts
- Specialty
- Internal medicine physician
- Credentials
- MD
- Practice
- Westchester Medical Center Advanced Physician Services PC
- Address
- 95 Grasslands Rd, Valhalla, NY 10595
- Phone
- (914) 493-6940
- Other locations
- 19 Bradhurst Ave, Hawthorne, NY 10532
- Medical school
- New York Medical College (2017)
- Hospital affiliations
- Westchester Medical Center
- Medicare assignment
- Accepts
- Telehealth
- Available
- NPI number
- 1952808396
- NY license no.
- 315715
If Dr. John treated you or someone in your family, your experience is exactly what others are looking for. Leave a review below.
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 160 people with traditional Medicare, average age 72
- Medicare quality score (MIPS 2024)
- 75 out of 100 — reported through the group practice
- New York Medicaid
- Enrolled fee-for-service provider since 2022. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Westchester Medical Center
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing internists? See 20 in Valhalla or 241 across Westchester County.
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Frequently Asked Questions
With Westchester Medical Center Advanced Physician Services PC, at 95 Grasslands Rd, Valhalla, NY 10595.
Call the office at (914) 493-6940.
Yes — Dr. John accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Westchester Medical Center.
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