Dr. Mariano Ariel Rizzo, MD
- Medicare services, 2024
- 966
- Medicare patients, 2024
- 252
- Part D claims, 2024
- 2,862
- MIPS score, 2024
- 100
- Hospital affiliations
- 3
- Practice address
- 35 River Rd, Cos Cob, CT 06807
- Practice phone
- Call (203) 384-3975
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northeast Medical Group, Inc.
Cos Cob, Connecticut
Find Dr. Rizzo's professional email, personal email and mobile number
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Dr. Mariano Ariel Rizzo is an internist in Cos Cob, Connecticut
Dr. Rizzo practices at Northeast Medical Group, Inc. in Cos Cob, Connecticut.
Dr. Rizzo's NPI, 1548530181, was assigned on January 11, 2012. Dr. Rizzo graduated from University of Buenos Aires in 2007. Dr. Rizzo holds New York license 275984.
- NPI
- 1548530181NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769609718
- NPI enumeration date
- January 11, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 384-3975
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mariano Ariel Rizzo practices at Northeast Medical Group, Inc. in Cos Cob, Connecticut
Dr. Rizzo's primary practice is Northeast Medical Group, Inc., at 35 River Rd, Cos Cob, CT 06807 in Western Ct County. The practice phone is (203) 384-3975.
- Northeast Medical Group, Inc.35 River Rd, Cos Cob, CT 06807 · Western Ct CountyPhone(203) 384-3975
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mariano Ariel Rizzo is affiliated with 8 sites of care and 1 medical group
Dr. Rizzo's primary practice is Northeast Medical Group, Inc. in Cos Cob, Connecticut. Dr. Rizzo is also affiliated with Yale New Haven Hospital. The medical group on file is Northeast Medical Group. Dmand AI also links Dr. Rizzo to 2 more hospitals, 3 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mariano Ariel Rizzo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rizzo practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northeast Medical Group, Inc. | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mariano Ariel Rizzo is one of 2,189 internists in Connecticut
Internal medicine is Dr. Rizzo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Rizzo is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Rizzo
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. Mariano Ariel Rizzo billed Medicare for 966 services in 2024
CMS data shows 966 Medicare services from Dr. Rizzo across 12 procedure codes in 2024, for 252 Medicare patients. Medicare paid $89,756 for them. Every service was in an office.
Dr. Rizzo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5612024: 65517%
- Other services
- 2023: 1402024: 19640%
- Tests and treatments
- 2023: 772024: 11549%
Dr. Rizzo compared with the Connecticut median for internists, 2024
- Dr. Rizzo
- Connecticut median
- Medicare services
- 966vs 3902.5 times
- Medicare patients
- 252vs 17247% above
- Part D claims
- 2,403vs 3437.0 times
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Rizzo'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
Dr. Mariano Ariel Rizzo treated 252 Medicare patients in 2024, average age 76
CMS counts 252 Medicare patients who saw Dr. Rizzo in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rizzo's median patient age at 64, with 34% women.
Dr. Rizzo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rizzo's Medicare patients by sex, 2024
- Women9538%
- Men15762%
Chronic conditions among Dr. Rizzo's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis46%
- Ischemic heart disease26%
- Mood disorders24%
- Anxiety21%
- Atrial fibrillation21%
- Depression21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rizzo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women34%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mariano Ariel Rizzo wrote 2,862 Medicare Part D claims in 2024
In 2024, Dr. Rizzo wrote 2,862 Medicare Part D claims for 382 patients. 91% of them were for generic drugs. CMS names the drug for 2,403 of them, across 69 drugs with 11 or more claims each, at $132,944 in total drug cost. In 2023, CMS named 1,533 claims across 44 drugs.
Dr. Rizzo's Part D claims by kind of drug, 2024
- Generic2,595 claims91%
- Brand-name252 claims9%
- Other15 claims1%
Dr. Rizzo'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. Rizzo's Part D claims, 2024
- Opioids1%18 of 2,862 claims
- Antibiotics5%132 of 2,862 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: 1,5332024: 2,40357%
Drugs named by CMS: 69 in 2024, 44 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. Mariano Ariel Rizzo scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Rizzo for performance year 2024, reported through an alternative payment model (APM). Dr. Rizzo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Rizzo as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Rizzo's MIPS scores, performance year 2024
- 100of 100Final score
- 86.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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. Mariano Ariel Rizzo received $468 in industry payments from 2016 to 2025
CMS Open Payments shows 19 general payments to Dr. Rizzo from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $173.
General payments to Dr. Rizzo by program year, 2016 to 2025
Companies that paid Dr. Rizzo the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mariano Ariel Rizzo graduated from University of Buenos Aires
Dr. Rizzo graduated from University of Buenos Aires in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mariano Ariel Rizzo'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 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Mariano Ariel Rizzo
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. Mariano Ariel Rizzo's NPI number?
Dr. Mariano Ariel Rizzo's NPI number is 1548530181. It was assigned on January 11, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Mariano Ariel Rizzo?
Dr. Mariano Ariel Rizzo is an internist in Cos Cob, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mariano Ariel Rizzo practice?
Dr. Rizzo practices at 35 River Rd, Cos Cob, CT 06807. Dr. Rizzo's primary practice is Northeast Medical Group, Inc. in Cos Cob, Connecticut. Dmand AI also links Dr. Rizzo to 2 hospitals, 3 home health agencies and 1 group practice or clinic.
What is Dr. Mariano Ariel Rizzo's office phone number?
The practice phone on file for Dr. Rizzo is (203) 384-3975.
What is Dr. Mariano Ariel Rizzo's medical license number?
Dr. Rizzo holds New York license 275984.
Which hospitals is Dr. Mariano Ariel Rizzo affiliated with?
Dr. Rizzo is affiliated with Yale New Haven Hospital. Dmand AI links Dr. Rizzo to 2 more hospitals.
What medical group is Dr. Mariano Ariel Rizzo part of?
Dr. Rizzo is linked to Northeast Medical Group.
Does Dr. Mariano Ariel Rizzo accept Medicare?
Yes. CMS data shows Dr. Rizzo billed Medicare for 966 services in 2024, and Dr. Rizzo accepts Medicare assignment.
Does Dr. Mariano Ariel Rizzo offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Rizzo as offering telehealth services.
What is Dr. Mariano Ariel Rizzo's MIPS score?
Dr. Rizzo's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Mariano Ariel Rizzo see?
CMS counts 252 Medicare patients who saw Dr. Rizzo in 2024, with an average age of 76.
What services does Dr. Mariano Ariel Rizzo bill to Medicare?
In 2024, Dr. Rizzo's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G0439).
Where did Dr. Mariano Ariel Rizzo go to medical school?
Dr. Rizzo graduated from University of Buenos Aires in 2007.
What drugs does Dr. Mariano Ariel Rizzo prescribe most?
In 2024 Medicare Part D data, Dr. Rizzo's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Mariano Ariel Rizzo received payments from drug or device companies?
CMS Open Payments shows $468 in general payments to Dr. Rizzo from 11 companies from 2016 to 2025. The largest total came from UCB, Inc.
How long has Dr. Mariano Ariel Rizzo been practicing?
Dr. Rizzo graduated from medical school in 2007, 19 years ago.
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