Dr. John Williston Harris, MD
- Medicare services, 2024
- 1,779
- Medicare patients, 2024
- 370
- Part D claims, 2024
- 555
- MIPS score, 2024
- 75
- Hospital affiliations
- 1
- Practice address
- 501 South Buena Vista Street, Burbank, CA 91505
- Practice phone
- Call (818) 843-5111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Harris' professional email, personal email and mobile number
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Dr. John Williston Harris is an infectious disease specialist in Burbank, California
Dr. Harris practices at Providence Saint Joseph Medical Center in Burbank, California, part of Providence Health & Services.
Dr. Harris' NPI, 1356648703, was assigned on February 22, 2011. Dr. Harris holds California license A137473.
- NPI
- 1356648703NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123271426
- NPI enumeration date
- February 22, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (818) 843-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Williston Harris practices at Providence Saint Joseph Medical Center in Burbank, California
Dr. Harris' primary practice is Providence Saint Joseph Medical Center, at 501 South Buena Vista Street, Burbank, CA 91505 in Los Angeles County. The practice phone is (818) 843-5111.
- Providence Saint Joseph Medical Center501 South Buena Vista Street, Burbank, CA 91505 · Los Angeles CountyPhone(818) 843-5111
Source: Dmand AI Affiliation Data
Dr. John Williston Harris is affiliated with 1 site of care and 1 medical group
Dr. Harris' primary practice is Providence Saint Joseph Medical Center in Burbank, California, part of Providence Health & Services. The medical group on file is Infectious Disease Consultants.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Williston Harris' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harris practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Saint Joseph Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Williston Harris is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Harris' primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Harris is licensed in California.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
Infectious disease specialists near Dr. Harris
Counts of infectious disease specialists 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 Williston Harris billed Medicare for 1,779 services in 2024
CMS data shows 1,779 Medicare services from Dr. Harris across 5 procedure codes in 2024, for 370 Medicare patients. Medicare paid $167,697 for them.
Dr. Harris' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8612024: 1,7794%
Where Dr. Harris' Medicare services took place, 2024
- In an office623%
- In a facility1,71797%
Dr. Harris compared with the California median for infectious disease specialists, 2024
- Dr. Harris
- California median
- Medicare services
- 1,779vs 4294.1 times
- Medicare patients
- 370vs 1802.1 times
- Part D claims
- 437vs 1193.7 times
Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.
Dr. Harris' 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Williston Harris treated 370 Medicare patients in 2024, average age 76
CMS counts 370 Medicare patients who saw Dr. Harris in 2024. The largest group is 75 to 84, with 131 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 69% are also on Medicaid. Their average risk score is 3.44, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Harris' median patient age at 61, with 42% women.
Dr. Harris' Medicare patients by age, 2024
Dr. Harris' Medicare patients by sex, 2024
- Women18851%
- Men18249%
Chronic conditions among Dr. Harris' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis70%
- Ischemic heart disease63%
- Diabetes59%
- Heart failure58%
- Chronic kidney disease54%
- Mood disorders54%
Share of Medicare patients with each condition. A patient can have several.
Dr. Harris' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Williston Harris wrote 555 Medicare Part D claims in 2024
In 2024, Dr. Harris wrote 555 Medicare Part D claims for 119 patients. 44% of them were for generic drugs. CMS names the drug for 437 of them, across 18 drugs with 11 or more claims each, at $1,246,008 in total drug cost. In 2023, CMS named 352 claims across 14 drugs.
Dr. Harris' Part D claims by kind of drug, 2024
- Generic243 claims44%
- Brand-name312 claims56%
Dr. Harris' 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. Harris' Part D claims, 2024
- Antibiotics34%187 of 555 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: 3522024: 43724%
Drugs named by CMS: 18 in 2024, 14 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. John Williston Harris scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Harris for performance year 2024, reported individually. Dr. Harris accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Williston Harris received $2,607 in industry payments from 2016 to 2024
CMS Open Payments shows 132 general payments to Dr. Harris from 16 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 85% of the total. Janssen Pharmaceuticals, Inc paid the most, $793.
General payments to Dr. Harris by program year, 2016 to 2024
General payments to Dr. Harris by kind, 2016 to 2024
- Food and beverage$2,21185%
- Education$39615%
Companies that paid Dr. Harris the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Williston Harris'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Williston Harris
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 Williston Harris' NPI number?
Dr. John Williston Harris' NPI number is 1356648703. It was assigned on February 22, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. John Williston Harris?
Dr. John Williston Harris is an infectious disease specialist in Burbank, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. John Williston Harris practice?
Dr. Harris practices at 501 South Buena Vista Street, Burbank, CA 91505. Dr. Harris' primary practice is Providence Saint Joseph Medical Center in Burbank, California, part of Providence Health & Services.
What is Dr. John Williston Harris' office phone number?
The practice phone on file for Dr. Harris is (818) 843-5111.
What is Dr. John Williston Harris' medical license number?
Dr. Harris holds California license A137473.
Which hospitals is Dr. John Williston Harris affiliated with?
Dr. Harris practices at Providence Saint Joseph Medical Center in Burbank, California.
What medical group is Dr. John Williston Harris part of?
Dr. Harris is linked to Infectious Disease Consultants.
Does Dr. John Williston Harris accept Medicare?
Yes. CMS data shows Dr. Harris billed Medicare for 1,779 services in 2024, and Dr. Harris accepts Medicare assignment.
What is Dr. John Williston Harris' MIPS score?
Dr. Harris' MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. John Williston Harris see?
CMS counts 370 Medicare patients who saw Dr. Harris in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. John Williston Harris bill to Medicare?
In 2024, Dr. Harris' most billed Medicare services were hospital inpatient care (99232), critical care (99291) and hospital inpatient care (99222).
What drugs does Dr. John Williston Harris prescribe most?
In 2024 Medicare Part D data, Dr. Harris' most prescribed drugs by claims were Biktarvy, Genvoya and Ceftriaxone.
Has Dr. John Williston Harris received payments from drug or device companies?
CMS Open Payments shows $2,607 in general payments to Dr. Harris from 16 companies from 2016 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. John Williston Harris been practicing?
Dr. Harris graduated from medical school in 2008, 18 years ago.
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