Dr. Maria D. Diaz, MD
- Medicare services, 2022
- 12
- Part D claims, 2024
- 374
- Industry payments
- $107
- Medical groups
- 2
- State license
- 1
- Practice address
- Cond Monteflores # 2007, San Juan, PR 00915-3509
- Practice phone
- Call (787) 461-3859
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
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. Maria D. Diaz is a general practice physician in San Juan, Puerto Rico
Dr. Diaz practices with HIMA San Pablo Caguas Hospital, a medical group.
Dr. Diaz's NPI, 1639443385, was assigned on February 28, 2012. Dr. Diaz holds Puerto Rico license 18405.
- NPI
- 1639443385NPI Registry (opens in a new tab)
- NPI enumeration date
- February 28, 2012
- NPI status
- Active
- Practice phone
- (787) 461-3859
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Maria D. Diaz's practice address is in San Juan, Puerto Rico
Dr. Diaz's practice address in the NPI Registry is Cond Monteflores # 2007, San Juan, PR 00915-3509. The practice phone is (787) 461-3859.
- NPI Registry addressCond Monteflores # 2007, San Juan, PR 00915-3509Phone(787) 461-3859
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Maria D. Diaz is affiliated with 2 medical groups
Dr. Diaz is part of HIMA San Pablo Caguas Hospital, a medical group in Caguas, Puerto Rico. The medical group on file is Grupo Médico GEMI.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Maria D. Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| HIMA San Pablo Caguas Hospital | 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 HIMA San Pablo Caguas Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Maria D. Diaz is one of 2,604 general practice physicians in Puerto Rico
General practice is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Diaz is licensed in Puerto Rico.
Specialties and state licenses
- General practice, Puerto RicoPrimary
General practice physicians near Dr. Diaz
Counts of general practice 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. Maria D. Diaz billed Medicare for 12 services in 2022
CMS data shows 12 Medicare services from Dr. Diaz across 1 procedure code in 2022. Medicare paid $688 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Diaz's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 412022: 1271%
- Tests and treatments
- 2021: 182022: 0100%
Dr. Diaz compared with the Puerto Rico median for general practice physicians, 2022
- Dr. Diaz
- Puerto Rico median
- Medicare services
- 12vs 3465% below
- Part D claims
- 198vs 73573% below
Medians across 3,001 general practice physicians in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Diaz's most billed Medicare procedure codes, 2022
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 general practice physicians in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria D. Diaz's patients have a median age of 84
Across all payers, Dmand AI patient panel data puts Dr. Diaz's median patient age at 84, with 65% women.
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 84
Patient panel by sex, all payers
- Women65%
- Men35%
Source: Dmand AI Patient Panel Data
Dr. Maria D. Diaz wrote 374 Medicare Part D claims in 2024
In 2024, Dr. Diaz wrote 374 Medicare Part D claims for 139 patients. 91% of them were for generic drugs. CMS names the drug for 198 of them, across 7 drugs with 11 or more claims each, at $1,464 in total drug cost. In 2023, CMS named 33 claims across 2 drugs.
Dr. Diaz's Part D claims by kind of drug, 2024
- Generic341 claims91%
- Brand-name22 claims6%
- Other11 claims3%
Dr. Diaz'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. Diaz's Part D claims, 2024
- Antibiotics8%29 of 374 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: 332024: 198500%
Drugs named by CMS: 7 in 2024, 2 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
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. Maria D. Diaz received $107 in industry payments from 2018 to 2025
CMS Open Payments shows 4 general payments to Dr. Diaz from 3 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 53% of the total. Chiesi USA, Inc. paid the most, $50.
General payments to Dr. Diaz by program year, 2018 to 2025
General payments to Dr. Diaz by kind, 2018 to 2025
- Food and beverage$5753%
- Gifts$5047%
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
Sources for Dr. Maria D. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand 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 Data |
| 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) |
| Industry payments | Open Payments (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 Dr. Maria D. 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. Maria D. Diaz's NPI number?
Dr. Maria D. Diaz's NPI number is 1639443385. It was assigned on February 28, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria D. Diaz?
Dr. Maria D. Diaz is a general practice physician in San Juan, Puerto Rico. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Maria D. Diaz practice?
Dr. Diaz practices at Cond Monteflores # 2007, San Juan, PR 00915-3509. Dr. Diaz's primary practice is HIMA San Pablo Caguas Hospital, a medical group.
What is Dr. Maria D. Diaz's office phone number?
The practice phone on file for Dr. Diaz is (787) 461-3859.
What is Dr. Maria D. Diaz's medical license number?
Dr. Diaz holds Puerto Rico license 18405.
What medical group is Dr. Maria D. Diaz part of?
Dr. Diaz is part of HIMA San Pablo Caguas Hospital in Caguas, Puerto Rico. Dr. Diaz is also linked to Grupo Médico GEMI. Dmand AI links Dr. Diaz to 2 medical groups in all.
Does Dr. Maria D. Diaz accept Medicare?
Yes. CMS data shows Dr. Diaz billed Medicare for 12 services in 2022.
What services does Dr. Maria D. Diaz bill to Medicare?
In 2022, Dr. Diaz's most billed Medicare services were emergency department visit (99283).
What drugs does Dr. Maria D. Diaz prescribe most?
In 2024 Medicare Part D data, Dr. Diaz's most prescribed drugs by claims were Clonazepam, Temazepam and Alprazolam.
Has Dr. Maria D. Diaz received payments from drug or device companies?
CMS Open Payments shows $107 in general payments to Dr. Diaz from 3 companies from 2018 to 2025. The largest total came from Chiesi USA, Inc.
How long has Dr. Maria D. Diaz been practicing?
Dr. Diaz graduated from medical school in 1993, 33 years ago.
Selling to general practice practices?
See general practice physicians in Puerto Rico 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