Joseph J. Demarco
- Medicare services, 2024
- 87
- Medicare patients, 2024
- 66
- Part D claims, 2024
- 446
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 344 S Hauser Blvd, Los Angeles, CA 90036
- Practice phone
- Call (716) 845-2300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Roswell Park Cancer Institute
Los Angeles, California
Find Joseph Demarco's professional email, personal email and mobile number
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Joseph J. Demarco is a physician assistant in Los Angeles, California
Joseph Demarco practices at Roswell Park Cancer Institute in Los Angeles, California.
Joseph Demarco's NPI, 1861933665, was assigned on March 13, 2017.
- NPI
- 1861933665NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880966746
- NPI enumeration date
- March 13, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (716) 845-2300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Joseph J. Demarco practices at Roswell Park Cancer Institute in Los Angeles, California
Joseph Demarco's primary practice is Roswell Park Cancer Institute, at 344 S Hauser Blvd, Los Angeles, CA 90036 in Los Angeles County. The practice phone is (716) 845-2300.
- Roswell Park Cancer Institute344 S Hauser Blvd, Los Angeles, CA 90036 · Los Angeles CountyPhone(716) 845-2300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Joseph J. Demarco is affiliated with 2 sites of care and 1 medical group
Joseph Demarco's primary practice is Roswell Park Cancer Institute in Los Angeles, California. Joseph Demarco is also affiliated with Roswell Park Comprehensive Cancer Center. The medical group on file is Roswell Park Comprehensive Cancer Center.
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 Joseph J. Demarco's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joseph Demarco practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Roswell Park Cancer Institute | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Joseph J. Demarco is one of 11,482 physician assistants in California
Physician assistant is Joseph Demarco's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Clinical focus
Dmand AI lists tobacco use among the conditions Joseph Demarco treats.
Physician assistants near Joseph Demarco
Counts of physician assistants 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
Joseph J. Demarco billed Medicare for 87 services in 2024
CMS data shows 87 Medicare services from Joseph Demarco across 1 procedure code in 2024, all of them office visits, for 66 Medicare patients. Medicare paid $7,831 for them. Every service was in a facility, such as a hospital, rather than an office.
Joseph Demarco compared with the California median for physician assistants, 2024
- Joseph Demarco
- California median
- Medicare services
- 87vs 20457% below
- Medicare patients
- 66vs 10537% below
- Part D claims
- 288vs 24319% above
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Joseph Demarco'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Joseph J. Demarco treated 66 Medicare patients in 2024, average age 73
CMS counts 66 Medicare patients who saw Joseph Demarco in 2024. The largest group is 65 to 74, with 34 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 21% are also on Medicaid. Their average risk score is 2.24, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Joseph Demarco's median patient age at 71, with 47% women.
Joseph Demarco's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Joseph Demarco's Medicare patients by sex, 2024
- Women3147%
- Men3553%
Chronic conditions among Joseph Demarco's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis39%
- Ischemic heart disease36%
- COPD35%
- Diabetes35%
- Anxiety32%
- Mood disorders30%
Share of Medicare patients with each condition. A patient can have several.
Joseph Demarco's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joseph J. Demarco wrote 446 Medicare Part D claims in 2024
In 2024, Joseph Demarco wrote 446 Medicare Part D claims for 117 patients. 60% of them were for generic drugs. CMS names the drug for 288 of them, across 9 drugs with 11 or more claims each, at $1,740,204 in total drug cost.
Joseph Demarco's Part D claims by kind of drug, 2024
- Generic269 claims60%
- Brand-name and other177 claims40%
Joseph Demarco'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 Joseph Demarco's Part D claims, 2024
- Antibiotics14%61 of 446 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Joseph J. Demarco offers telehealth to Medicare patients
Joseph Demarco accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Joseph Demarco as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Sources for Joseph J. Demarco'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) |
| 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 Joseph J. Demarco
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What is Joseph J. Demarco's NPI number?
Joseph J. Demarco's NPI number is 1861933665. It was assigned on March 13, 2017, and it is active in the NPI Registry.
What does Joseph J. Demarco specialize in?
Joseph J. Demarco is a physician assistant in Los Angeles, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Joseph J. Demarco practice?
Joseph Demarco practices at 344 S Hauser Blvd, Los Angeles, CA 90036. Joseph Demarco's primary practice is Roswell Park Cancer Institute in Los Angeles, California.
What is Joseph J. Demarco's office phone number?
The practice phone on file for Joseph Demarco is (716) 845-2300.
Which hospitals is Joseph J. Demarco affiliated with?
Joseph Demarco is affiliated with Roswell Park Comprehensive Cancer Center.
What medical group is Joseph J. Demarco part of?
Joseph Demarco is linked to Roswell Park Comprehensive Cancer Center.
Does Joseph J. Demarco accept Medicare?
Yes. CMS data shows Joseph Demarco billed Medicare for 87 services in 2024, and Joseph Demarco accepts Medicare assignment.
Does Joseph J. Demarco offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Joseph Demarco as offering telehealth services.
How many Medicare patients does Joseph J. Demarco see?
CMS counts 66 Medicare patients who saw Joseph Demarco in 2024, with an average age of 73.
What services does Joseph J. Demarco bill to Medicare?
In 2024, Joseph Demarco's most billed Medicare services were office visit, established patient (99215).
What drugs does Joseph J. Demarco prescribe most?
In 2024 Medicare Part D data, Joseph Demarco's most prescribed drugs by claims were Venclexta, Calquence and Acyclovir.
How long has Joseph J. Demarco been practicing?
Joseph Demarco graduated from medical school in 2017, 9 years ago.
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