Dr. Marco N. Diaz, MD
- Medicare services, 2024
- 164
- Medicare patients, 2024
- 122
- Part D claims, 2023
- 18
- MIPS score, 2024
- 98
- Hospital affiliations
- 2
- Practice address
- 22 Bramhall St, Portland, ME 04102
- Practice phone
- Call (207) 662-0111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Diaz'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. Marco N. Diaz is a cardiologist in Portland, Maine
Dr. Diaz practices at MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth.
Dr. Diaz's NPI, 1629000302, was assigned on July 6, 2006. Dr. Diaz graduated from University of Massachusetts Medical School in 1991. Dr. Diaz holds Maine license MD15173.
- NPI
- 1629000302NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870523392
- NPI enumeration date
- July 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 662-0111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marco N. Diaz practices at MaineHealth Maine Medical Center in Portland, Maine
Dr. Diaz's primary practice is MaineHealth Maine Medical Center, at 22 Bramhall St, Portland, ME 04102 in Cumberland County. The practice phone is (207) 662-0111.
- MaineHealth Maine Medical Center22 Bramhall St, Portland, ME 04102 · Cumberland CountyPhone(207) 662-0111
Source: Dmand AI Affiliation Data
Dr. Marco N. Diaz is affiliated with 6 sites of care and 4 medical groups
Dr. Diaz's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dr. Diaz is also affiliated with MaineHealth Memorial Hospital. The medical group on file is MaineHealth Primary Care - Family Medicine - Portland. Dmand AI also links Dr. Diaz to 4 more group practices and clinics and 3 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. Marco N. Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MaineHealth Maine Medical Center | Available with a free account |
| +5 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across MaineHealth and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marco N. Diaz is one of 153 cardiologists in Maine
Cardiovascular disease is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Diaz is licensed in Maine.
Specialties and state licenses
- Cardiovascular disease, MainePrimary
Cardiologists near Dr. Diaz
Counts of cardiologists 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. Marco N. Diaz billed Medicare for 164 services in 2024
CMS data shows 164 Medicare services from Dr. Diaz across 7 procedure codes in 2024, for 122 Medicare patients. Medicare paid $8,569 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Diaz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1542024: 10234%
- Office and hospital visits
- 2023: 562024: 4127%
- Imaging
- 2023: 272024: 2122%
Dr. Diaz compared with the Maine median for cardiologists, 2024
- Dr. Diaz
- Maine median
- Medicare services
- 164vs 1,13185% below
- Medicare patients
- 122vs 76484% below
- Part D claims
- 18vs 60097% below
Medians across 154 cardiologists in Maine with Dmand AI profiles that report each measure.
Dr. Diaz'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. Diaz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diaz and other cardiologists in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marco N. Diaz treated 122 Medicare patients in 2024, average age 76
CMS counts 122 Medicare patients who saw Dr. Diaz in 2024. The largest group is 75 to 84, with 52 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.21, 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. Diaz's median patient age at 74, with 43% women.
Dr. Diaz's Medicare patients by age, 2024
Dr. Diaz's Medicare patients by sex, 2024
- Women5041%
- Men7259%
Chronic conditions among Dr. Diaz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease69%
- Heart failure60%
- Atrial fibrillation49%
- Arthritis45%
- Chronic kidney disease43%
- Mood disorders39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women43%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marco N. Diaz wrote 18 Medicare Part D claims in 2023
In 2023, Dr. Diaz wrote 18 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $360 in total drug cost. In 2022, CMS named 39 claims across 2 drugs.
Dr. Diaz's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 392023: 1854%
Drugs named by CMS: 1 in 2023, 2 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Marco N. Diaz scored 98 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 98 out of 100 for Dr. Diaz for performance year 2024, reported through an alternative payment model (APM). Dr. Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Diaz's MIPS scores, performance year 2024
- 98of 100Final score
- 83.3of 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Marco N. Diaz received $5,723 in industry payments from 2018 to 2025
CMS Open Payments shows 36 general payments to Dr. Diaz from 3 drug and device companies from 2018 to 2025. Travel and lodging make up the largest share, 50% of the total. Edwards Lifesciences Corporation paid the most, $5,140.
General payments to Dr. Diaz by program year, 2018 to 2025
General payments to Dr. Diaz by kind, 2018 to 2025
- Travel and lodging$2,86850%
- Food and beverage$2,85550%
Companies that paid Dr. Diaz the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marco N. Diaz graduated from University of Massachusetts Medical School
Dr. Diaz graduated from University of Massachusetts Medical School in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marco N. Diaz'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) |
| 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. Marco N. Diaz
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. Marco N. Diaz's NPI number?
Dr. Marco N. Diaz's NPI number is 1629000302. It was assigned on July 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marco N. Diaz?
Dr. Marco N. Diaz is a cardiologist in Portland, Maine. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Marco N. Diaz practice?
Dr. Diaz practices at 22 Bramhall St, Portland, ME 04102. Dr. Diaz's primary practice is MaineHealth Maine Medical Center in Portland, Maine, part of MaineHealth. Dmand AI also links Dr. Diaz to 4 group practices and clinics and 3 medical groups.
What is Dr. Marco N. Diaz's office phone number?
The practice phone on file for Dr. Diaz is (207) 662-0111.
What is Dr. Marco N. Diaz's medical license number?
Dr. Diaz holds Maine license MD15173.
Which hospitals is Dr. Marco N. Diaz affiliated with?
Dr. Diaz practices at MaineHealth Maine Medical Center in Portland, Maine. Dr. Diaz is also affiliated with MaineHealth Memorial Hospital.
What medical group is Dr. Marco N. Diaz part of?
Dr. Diaz is linked to MaineHealth Primary Care - Family Medicine - Portland. Dmand AI links Dr. Diaz to 3 more medical groups.
Does Dr. Marco N. Diaz accept Medicare?
Yes. CMS data shows Dr. Diaz billed Medicare for 164 services in 2024, and Dr. Diaz accepts Medicare assignment.
What is Dr. Marco N. Diaz's MIPS score?
Dr. Diaz's MIPS final score for performance year 2024 is 98 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Marco N. Diaz see?
CMS counts 122 Medicare patients who saw Dr. Diaz in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Marco N. Diaz bill to Medicare?
In 2024, Dr. Diaz's most billed Medicare services were heart test or procedure (93306), heart test or procedure (93010) and critical care (99291).
Where did Dr. Marco N. Diaz go to medical school?
Dr. Diaz graduated from University of Massachusetts Medical School in 1991.
What drugs does Dr. Marco N. Diaz prescribe most?
In 2023 Medicare Part D data, Dr. Diaz's most prescribed drugs by claims were Metoprolol Succinate.
Has Dr. Marco N. Diaz received payments from drug or device companies?
CMS Open Payments shows $5,723 in general payments to Dr. Diaz from 3 companies from 2018 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. Marco N. Diaz been practicing?
Dr. Diaz graduated from medical school in 1991, 35 years ago.
Selling to cardiovascular disease practices?
See cardiologists in Maine by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card