Dr. John Impellizeri, DO
- Medicare services, 2024
- 15
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 4,389
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 9455 Clairemont Mesa Blvd, San Diego, CA 92123
- Practice phone
- Call (619) 528-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente San Diego Medical Center
San Diego, California
Find Dr. Impellizeri'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 Impellizeri is an internist in San Diego, California
Dr. Impellizeri practices at Kaiser Permanente San Diego Medical Center in San Diego, California.
Dr. Impellizeri's NPI, 1669466363, was assigned on September 8, 2005. Dr. Impellizeri graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1999. Dr. Impellizeri holds New York license 224524.
- NPI
- 1669466363NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769387398
- NPI enumeration date
- September 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (619) 528-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Impellizeri practices at Kaiser Permanente San Diego Medical Center in San Diego, California
Dr. Impellizeri's primary practice is Kaiser Permanente San Diego Medical Center, at 9455 Clairemont Mesa Blvd, San Diego, CA 92123 in San Diego County. The practice phone is (619) 528-5000.
- Kaiser Permanente San Diego Medical Center9455 Clairemont Mesa Blvd, San Diego, CA 92123 · San Diego CountyPhone(619) 528-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Impellizeri is affiliated with 3 sites of care and 1 medical group
Dr. Impellizeri's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California. Dr. Impellizeri is also affiliated with Kaiser Permanente Zion Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Impellizeri to 1 more physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Impellizeri's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Impellizeri practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente San Diego Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Impellizeri is one of 16,751 internists in California
Internal medicine is Dr. Impellizeri's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Impellizeri is board certified in internal medicine by the American Board of Internal Medicine. Dr. Impellizeri is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Clinical focus
Dmand AI lists chronic diabetes, chronic hypertension, cold sores or genital herpes, joint pain and muscle pain, fibromyalgia, and limb pain among the conditions Dr. Impellizeri treats.
Internists near Dr. Impellizeri
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 Impellizeri billed Medicare for 15 services in 2024
CMS data shows 15 Medicare services from Dr. Impellizeri across 1 procedure code in 2024, all of them office visits, for 14 Medicare patients. Medicare paid $1,353 for them. Every service was in an office.
Dr. Impellizeri's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 202024: 1525%
Dr. Impellizeri compared with the California median for internists, 2024
- Dr. Impellizeri
- California median
- Medicare services
- 15vs 36196% below
- Medicare patients
- 14vs 15191% below
- Part D claims
- 3,927vs 4219.3 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Impellizeri's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Impellizeri?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Impellizeri and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Impellizeri treated 14 Medicare patients in 2024, average age 64
CMS counts 14 Medicare patients who saw Dr. Impellizeri in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.75, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Impellizeri's median patient age at 52, with 53% women.
Dr. Impellizeri's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Impellizeri's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Impellizeri wrote 4,389 Medicare Part D claims in 2024
In 2024, Dr. Impellizeri wrote 4,389 Medicare Part D claims for 661 patients. 88% of them were for generic drugs. CMS names the drug for 3,927 of them, across 77 drugs with 11 or more claims each, at $182,193 in total drug cost. In 2023, CMS named 3,581 claims across 67 drugs.
Dr. Impellizeri's Part D claims by kind of drug, 2024
- Generic3,857 claims88%
- Brand-name459 claims10%
- Other73 claims2%
Dr. Impellizeri'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. Impellizeri's Part D claims, 2024
- Opioids2%96 of 4,389 claims
- Antibiotics3%153 of 4,389 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: 3,5812024: 3,92710%
Drugs named by CMS: 77 in 2024, 67 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. John Impellizeri takes part in Medicare
Dr. Impellizeri 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. John Impellizeri has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Impellizeri, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Impellizeri
- 2011
- CMS Stage 1 2012
- Undated
- Bridges to Excellence
Source: Dmand AI Professional Profile Data
Dr. John Impellizeri graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury
Dr. Impellizeri graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1999. Dr. Impellizeri is a member of ACP.
- Medical school
- Board certified in internal medicine
- Board certified in 2009 - 2026
- Board certified in 2002 - 2011
Source: Dmand AI Professional Profile Data
Dr. John Impellizeri accepts plans from 2 insurance carriers
Dr. Impellizeri is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Impellizeri accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Impellizeri'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 DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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 Impellizeri
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 Impellizeri's NPI number?
Dr. John Impellizeri's NPI number is 1669466363. It was assigned on September 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Impellizeri?
Dr. John Impellizeri is an internist in San Diego, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Impellizeri practice?
Dr. Impellizeri practices at 9455 Clairemont Mesa Blvd, San Diego, CA 92123. Dr. Impellizeri's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California. Dmand AI also links Dr. Impellizeri to 1 physician office.
What is Dr. John Impellizeri's office phone number?
The practice phone on file for Dr. Impellizeri is (619) 528-5000.
What is Dr. John Impellizeri's medical license number?
Dr. Impellizeri holds New York license 224524.
Which hospitals is Dr. John Impellizeri affiliated with?
Dr. Impellizeri is affiliated with Kaiser Permanente Zion Medical Center.
What medical group is Dr. John Impellizeri part of?
Dr. Impellizeri is linked to Southern California Permanente Medical Group.
Does Dr. John Impellizeri accept Medicare?
Yes. CMS data shows Dr. Impellizeri billed Medicare for 15 services in 2024, and Dr. Impellizeri accepts Medicare assignment.
How many Medicare patients does Dr. John Impellizeri see?
CMS counts 14 Medicare patients who saw Dr. Impellizeri in 2024, with an average age of 64.
Is Dr. John Impellizeri board certified?
Yes. Dr. Impellizeri is board certified in internal medicine by the American Board of Internal Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. John Impellizeri bill to Medicare?
In 2024, Dr. Impellizeri's most billed Medicare services were office visit, established patient (99214).
Where did Dr. John Impellizeri go to medical school?
Dr. Impellizeri graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1999.
What drugs does Dr. John Impellizeri prescribe most?
In 2024 Medicare Part D data, Dr. Impellizeri's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
How long has Dr. John Impellizeri been practicing?
Dr. Impellizeri graduated from medical school in 1999, 27 years ago.
What insurance does Dr. John Impellizeri accept?
Dr. Impellizeri is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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