Ann Intern Med
Dr. Giancarlo Pasquale Dimassa, MD
- Medicare services, 2024
- 1,310
- Medicare patients, 2024
- 538
- Part D claims, 2024
- 470
- Publications
- 3
- MIPS score, 2024
- 97
- Practice address
- 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345
- Practice phone
- Call (818) 898-4630
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sub-Acute Care Center
Skilled Nursing Facility - Hospital-Based · Mission Hills, California
Find Dr. Dimassa'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. Giancarlo Pasquale Dimassa is an emergency medicine physician in Mission Hills, California
Dr. Dimassa practices at Sub-Acute Care Center in Mission Hills, California.
Dr. Dimassa's NPI, 1255370797, was assigned on June 6, 2006. Dr. Dimassa graduated from David Geffen School of Medicine at UCLA in 2001. Dr. Dimassa holds California license A81063.
- NPI
- 1255370797NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072599125
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (818) 898-4630
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Giancarlo Pasquale Dimassa practices at 2 locations in Mission Hills, California
Dr. Dimassa's primary practice is Sub-Acute Care Center, at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 in Los Angeles County. The practice phone is (818) 898-4630. Dr. Dimassa also practices at Providence Holy Cross Medical Center, 15031 W Rinaldi St, Mission Hills, CA 91345.
- Sub-Acute Care CenterPrimary11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 898-4630
- Providence Holy Cross Medical Center15031 W Rinaldi St, Mission Hills, CA 91345 · Los Angeles CountyPhone(818) 365-8051
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Giancarlo Pasquale Dimassa is affiliated with 2 sites of care and 3 medical groups
Dr. Dimassa's primary practice is Sub-Acute Care Center in Mission Hills, California. Dr. Dimassa is also affiliated with Providence Holy Cross Medical Center. The medical group on file is Vituity. Dmand AI also links Dr. Dimassa to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Giancarlo Pasquale Dimassa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dimassa practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sub-Acute Care Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Giancarlo Pasquale Dimassa is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Dimassa's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Dimassa is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Dimassa's licenses on file in 15 states: California, Arizona, Colorado, Montana, New Jersey, Nevada, New York, Florida, Idaho, Illinois, Kansas, Mississippi, North Dakota, Ohio and Tennessee.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Arizona license
- Colorado license
- Montana license
- New Jersey license
- Nevada license
- New York license
- Florida license
- Idaho license
- Illinois license
- Kansas license
- Mississippi license
- North Dakota license
- Ohio license
- Tennessee license
Emergency medicine physicians near Dr. Dimassa
Counts of emergency medicine physicians 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. Giancarlo Pasquale Dimassa billed Medicare for 1,310 services in 2024
CMS data shows 1,310 Medicare services from Dr. Dimassa across 28 procedure codes in 2024, for 538 Medicare patients. Medicare paid $80,457 for them.
Dr. Dimassa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5812024: 5584%
- Lab and pathology
- 2023: 2572024: 33430%
- Tests and treatments
- 2023: 3182024: 24922%
- Imaging
- 2023: 522024: 10194%
- Surgery
- 2023: 492024: 3920%
- Drugs given in the office
- 2023: 282024: 294%
- Other services
- 2023: 212024: 0100%
Where Dr. Dimassa's Medicare services took place, 2024
- In an office91770%
- In a facility39330%
Dr. Dimassa compared with the California median for emergency medicine physicians, 2024
- Dr. Dimassa
- California median
- Medicare services
- 1,310vs 2654.9 times
- Medicare patients
- 538vs 2432.2 times
- Part D claims
- 256vs 624.1 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Dimassa'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dimassa and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Giancarlo Pasquale Dimassa treated 538 Medicare patients in 2024, average age 74
CMS counts 538 Medicare patients who saw Dr. Dimassa in 2024. The largest group is 65 to 74, with 219 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 44% are also on Medicaid. Their average risk score is 1.99, 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. Dimassa's median patient age at 46, with 60% women.
Dr. Dimassa's Medicare patients by age, 2024
Dr. Dimassa's Medicare patients by sex, 2024
- Women35165%
- Men18735%
Chronic conditions among Dr. Dimassa's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes46%
- Chronic kidney disease34%
- Ischemic heart disease34%
- Mood disorders33%
- Depression30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dimassa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Giancarlo Pasquale Dimassa wrote 470 Medicare Part D claims in 2024
In 2024, Dr. Dimassa wrote 470 Medicare Part D claims for 303 patients. 88% of them were for generic drugs. CMS names the drug for 256 of them, across 11 drugs with 11 or more claims each, at $22,198 in total drug cost. In 2023, CMS named 300 claims across 12 drugs.
Dr. Dimassa's Part D claims by kind of drug, 2024
- Generic412 claims88%
- Brand-name and other58 claims12%
Dr. Dimassa'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. Dimassa's Part D claims, 2024
- Opioids7%34 of 470 claims
- Antibiotics39%181 of 470 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: 3002024: 25615%
Drugs named by CMS: 11 in 2024, 12 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. Giancarlo Pasquale Dimassa scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Dimassa for performance year 2024, reported as part of a group. Dr. Dimassa accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dimassa as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Dimassa's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Giancarlo Pasquale Dimassa has 3 publications on record
Dmand AI links 3 papers to Dr. Dimassa. Dr. Dimassa's most frequent co-authors are Laleh Gharahbaghian, MD and Bobby Massoudian, MD.
Dr. Dimassa's most frequent co-authors
Recent publications by Dr. Dimassa
See who Dr. Dimassa researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dimassa works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Giancarlo Pasquale Dimassa received $20 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Dimassa from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $20.
Companies that paid Dr. Dimassa the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Giancarlo Pasquale Dimassa graduated from David Geffen School of Medicine at UCLA
Dr. Dimassa graduated from David Geffen School of Medicine at UCLA in 2001.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Giancarlo Pasquale Dimassa accepts plans from 9 insurance carriers
Dr. Dimassa is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- United Healthcare
- Elevance
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Dimassa accepts, by number of carriers
- PPO6
- HMO5
- Medicare5
- POS5
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Giancarlo Pasquale Dimassa'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 Affiliation DataDmand AI Practice 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Giancarlo Pasquale Dimassa
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. Giancarlo Pasquale Dimassa's NPI number?
Dr. Giancarlo Pasquale Dimassa's NPI number is 1255370797. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Giancarlo Pasquale Dimassa?
Dr. Giancarlo Pasquale Dimassa is an emergency medicine physician in Mission Hills, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Giancarlo Pasquale Dimassa practice?
Dr. Dimassa practices at 11600a Indian Hills Road, Mission Hills, Ca 91345, Mission Hills, CA 91345. Dr. Dimassa also practices at 15031 W Rinaldi St, Mission Hills, CA 91345. Dr. Dimassa's primary practice is Sub-Acute Care Center in Mission Hills, California. Dmand AI also links Dr. Dimassa to 2 medical groups.
What is Dr. Giancarlo Pasquale Dimassa's office phone number?
The practice phone on file for Dr. Dimassa is (818) 898-4630.
What is Dr. Giancarlo Pasquale Dimassa's medical license number?
Dr. Dimassa holds California license A81063, one of the licenses on file in 15 states.
Which states has Dr. Giancarlo Pasquale Dimassa been licensed in?
Dmand AI has state licenses on file for Dr. Dimassa in California (2002 to 2026), Arizona (2021 to 2027), Colorado (2023 to 2027), Montana (2023 to 2027), New Jersey (2020 to 2027), Nevada (2021 to 2027), New York (2022 to 2027), Florida (2022 to 2026), Idaho (2020 to 2026), Illinois (2020 to 2026), Kansas (2021 to 2026), Mississippi (2022 to 2026), North Dakota (2023 to 2026), Ohio (2022 to 2026) and Tennessee (2023 to 2026).
Which hospitals is Dr. Giancarlo Pasquale Dimassa affiliated with?
Dr. Dimassa is affiliated with Providence Holy Cross Medical Center.
What medical group is Dr. Giancarlo Pasquale Dimassa part of?
Dr. Dimassa is linked to Vituity. Dmand AI links Dr. Dimassa to 2 more medical groups.
Does Dr. Giancarlo Pasquale Dimassa accept Medicare?
Yes. CMS data shows Dr. Dimassa billed Medicare for 1,310 services in 2024, and Dr. Dimassa accepts Medicare assignment.
Does Dr. Giancarlo Pasquale Dimassa offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dimassa as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Giancarlo Pasquale Dimassa's MIPS score?
Dr. Dimassa's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Giancarlo Pasquale Dimassa see?
CMS counts 538 Medicare patients who saw Dr. Dimassa in 2024, with an average age of 74.
Is Dr. Giancarlo Pasquale Dimassa board certified?
Yes. Dr. Dimassa is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Giancarlo Pasquale Dimassa bill to Medicare?
In 2024, Dr. Dimassa's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and diagnostic imaging (71045).
Where did Dr. Giancarlo Pasquale Dimassa go to medical school?
Dr. Dimassa graduated from David Geffen School of Medicine at UCLA in 2001.
What drugs does Dr. Giancarlo Pasquale Dimassa prescribe most?
In 2024 Medicare Part D data, Dr. Dimassa's most prescribed drugs by claims were Azithromycin, Cephalexin and Hydrocodone-Acetaminophen.
Has Dr. Giancarlo Pasquale Dimassa received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to Dr. Dimassa from 1 company from 2022 to 2022. The largest total came from Gilead Sciences, Inc.
How long has Dr. Giancarlo Pasquale Dimassa been practicing?
Dr. Dimassa graduated from medical school in 2001, 25 years ago.
Does Dr. Giancarlo Pasquale Dimassa do research?
Dmand AI links 3 publications to Dr. Dimassa.
Who does Dr. Giancarlo Pasquale Dimassa publish with?
Dr. Dimassa's most frequent co-authors are Laleh Gharahbaghian, MD (1 shared paper) and Bobby Massoudian, MD (1 shared paper).
What insurance does Dr. Giancarlo Pasquale Dimassa accept?
Dr. Dimassa is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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