Dr. Roberto E. Maiz, MD
- Medicare services, 2017
- 17
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 165
- Hospital affiliations
- 2
- Industry payments
- $1,880
- Practice address
- Calle Javilla #8 Al Costado Parque De Bombas, San German, PR 00683
- Practice phone
- Call (787) 852-5300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Maiz'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. Roberto E. Maiz is a general surgeon in San German, Puerto Rico
Dr. Maiz practices at Hospital Metropolitano San Germán in San German, Puerto Rico, part of Diócesis de Mayagüez.
Dr. Maiz's NPI, 1437125713, was assigned on February 27, 2006. Dr. Maiz graduated from Ponce School of Medicine in 1996. Dr. Maiz holds Puerto Rico license 12998.
- NPI
- 1437125713NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517987720
- NPI enumeration date
- February 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 852-5300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roberto E. Maiz practices at 2 locations in San German, Puerto Rico
Dr. Maiz's primary practice is Hospital Metropolitano San Germán, at Calle Javilla #8 Al Costado Parque De Bombas, San German, PR 00683 in San German County. The practice phone is (787) 852-5300. Dr. Maiz also practices at Hospital Metropolitano San German, 8 Calle Javilla, San German, PR 00683.
- Hospital Metropolitano San GermánPrimaryCalle Javilla #8 Al Costado Parque De Bombas, San German, PR 00683 · San German CountyPhone(787) 852-5300
- Hospital Metropolitano San German8 Calle Javilla, San German, PR 00683 · San German CountyPhone(787) 892-1860
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Roberto E. Maiz is affiliated with 2 sites of care
Dr. Maiz's primary practice is Hospital Metropolitano San Germán in San German, Puerto Rico, part of Diócesis de Mayagüez. Dr. Maiz is also affiliated with Hospital de la Concepción.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Roberto E. Maiz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maiz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital Metropolitano San Germán | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roberto E. Maiz is one of 168 general surgeons in Puerto Rico
Surgery is Dr. Maiz's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Maiz is licensed in Puerto Rico.
Specialties and state licenses
- Surgery, Puerto RicoPrimary
General surgeons near Dr. Maiz
Counts of general surgeons 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. Roberto E. Maiz billed Medicare for 17 services in 2017
CMS data shows 17 Medicare services from Dr. Maiz across 1 procedure code in 2017, for 14 Medicare patients. Medicare paid $2,181 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Maiz compared with the Puerto Rico median for general surgeons, 2017
- Dr. Maiz
- Puerto Rico median
- Medicare services
- 17vs 1911% below
- Medicare patients
- 14vs 1822% below
- Part D claims
- 125vs 512.5 times
Medians across 167 general surgeons in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Maiz's most billed Medicare procedure codes, 2017
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. Maiz and other general surgeons in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roberto E. Maiz treated 14 Medicare patients in 2024, average age 78
CMS counts 14 Medicare patients who saw Dr. Maiz in 2024. 75% of them have high blood pressure. Their average risk score is 2.08, 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. Maiz's median patient age at 72, with 50% women.
Chronic conditions among Dr. Maiz's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maiz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Roberto E. Maiz wrote 165 Medicare Part D claims in 2024
In 2024, Dr. Maiz wrote 165 Medicare Part D claims for 99 patients. 96% of them were for generic drugs. CMS names the drug for 125 of them, across 5 drugs with 11 or more claims each, at $1,021 in total drug cost. In 2023, CMS named 127 claims across 4 drugs.
Dr. Maiz's Part D claims by kind of drug, 2024
- Generic159 claims96%
- Brand-name and other6 claims4%
Dr. Maiz'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. Maiz's Part D claims, 2024
- Opioids26%43 of 165 claims
- Antibiotics61%100 of 165 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: 1272024: 1252%
Drugs named by CMS: 5 in 2024, 4 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. Roberto E. Maiz ranks in the 98th percentile for hernia repair - groin (open) in Medicare
Dr. Maiz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 29 procedures of hernia repair - groin (open) by Dr. Maiz, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Maiz ranks in Medicare procedure volume
- Hernia repair - groin (open)
- 98th percentile29 procedures
- Removal of tissue
- 66th percentile15 procedures
- Removal or shaving of skin growth
- 66th percentile13 procedures
- Mastectomy
- 66th percentile12 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Roberto E. Maiz received $1,880 in industry payments from 2016 to 2025
CMS Open Payments shows 12 general payments to Dr. Maiz from 8 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 58% of the total. Johnson & Johnson Medical Devices & Diagnostics Group - Latin America, L.L.C. paid the most, $1,169.
General payments to Dr. Maiz by program year, 2016 to 2025
General payments to Dr. Maiz by kind, 2016 to 2025
- Travel and lodging$1,08558%
- Food and beverage$79542%
Companies that paid Dr. Maiz 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. Roberto E. Maiz graduated from Ponce School of Medicine
Dr. Maiz graduated from Ponce School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Roberto E. Maiz'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)Doctors and Clinicians Utilization Data (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. Roberto E. Maiz
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. Roberto E. Maiz's NPI number?
Dr. Roberto E. Maiz's NPI number is 1437125713. It was assigned on February 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Roberto E. Maiz?
Dr. Roberto E. Maiz is a general surgeon in San German, Puerto Rico. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Roberto E. Maiz practice?
Dr. Maiz practices at Calle Javilla #8 Al Costado Parque De Bombas, San German, PR 00683. Dr. Maiz also practices at 8 Calle Javilla, San German, PR 00683. Dr. Maiz's primary practice is Hospital Metropolitano San Germán in San German, Puerto Rico, part of Diócesis de Mayagüez.
What is Dr. Roberto E. Maiz's office phone number?
The practice phone on file for Dr. Maiz is (787) 852-5300.
What is Dr. Roberto E. Maiz's medical license number?
Dr. Maiz holds Puerto Rico license 12998.
Which hospitals is Dr. Roberto E. Maiz affiliated with?
Dr. Maiz practices at Hospital Metropolitano San Germán in San German, Puerto Rico. Dr. Maiz is also affiliated with Hospital de la Concepción.
Does Dr. Roberto E. Maiz accept Medicare?
Yes. CMS data shows Dr. Maiz billed Medicare for 17 services in 2017, and Dr. Maiz accepts Medicare assignment.
How many Medicare patients does Dr. Roberto E. Maiz see?
CMS counts 14 Medicare patients who saw Dr. Maiz in 2024, with an average age of 78.
What services does Dr. Roberto E. Maiz bill to Medicare?
In 2017, Dr. Maiz's most billed Medicare services were hospital inpatient care (99223).
Where did Dr. Roberto E. Maiz go to medical school?
Dr. Maiz graduated from Ponce School of Medicine in 1996.
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What drugs does Dr. Roberto E. Maiz prescribe most?
In 2024 Medicare Part D data, Dr. Maiz's most prescribed drugs by claims were Tramadol HCl-Acetaminophen, Cefadroxil and Cephalexin.
Has Dr. Roberto E. Maiz received payments from drug or device companies?
CMS Open Payments shows $1,880 in general payments to Dr. Maiz from 8 companies from 2016 to 2025. The largest total came from Johnson & Johnson Medical Devices & Diagnostics Group - Latin America, L.L.C.
How long has Dr. Roberto E. Maiz been practicing?
Dr. Maiz graduated from medical school in 1996, 30 years ago.
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