Dr. Mervin Jovan De Guzman Diaz, MD
- Part D claims, 2024
- 58
- Hospital affiliations
- 1
- Industry payments
- $116
- Medical group
- 1
- State license
- 1
- Practice address
- 355 Ave Font Martelo, Humacao, PR 00791
- Practice phone
- Call (787) 852-0768
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. De Guzman 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. Mervin Jovan De Guzman Diaz is a general practice physician in Humacao, Puerto Rico
Dr. De Guzman Diaz practices at Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital.
Dr. De Guzman Diaz's NPI, 1548876121, was assigned on September 19, 2020. Dr. De Guzman Diaz holds Puerto Rico license 17066I.
- NPI
- 1548876121NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426546862
- NPI enumeration date
- September 19, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 852-0768
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mervin Jovan De Guzman Diaz practices at Ryder Memorial Hospital in Humacao, Puerto Rico
Dr. De Guzman Diaz's primary practice is Ryder Memorial Hospital, at 355 Ave Font Martelo, Humacao, PR 00791 in Humacao County. The practice phone is (787) 852-0768.
- Ryder Memorial Hospital355 Ave Font Martelo, Humacao, PR 00791 · Humacao CountyPhone(787) 852-0768
Source: Dmand AI Affiliation Data
Dr. Mervin Jovan De Guzman Diaz is affiliated with 2 sites of care and 1 medical group
Dr. De Guzman Diaz's primary practice is Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital. Dmand AI also links Dr. De Guzman Diaz to 1 group practice or clinic and 1 medical group, 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. Mervin Jovan De Guzman Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. De Guzman Diaz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ryder Memorial Hospital | Available with a free account |
| +1 more site and 1 medical group | 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 Ryder Memorial Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mervin Jovan De Guzman Diaz is one of 2,604 general practice physicians in Puerto Rico
General practice is Dr. De Guzman Diaz's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. De Guzman Diaz is licensed in Puerto Rico.
Specialties and state licenses
- General practice, Puerto RicoPrimary
General practice physicians near Dr. De Guzman 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. Mervin Jovan De Guzman Diaz's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. De Guzman Diaz's median patient age at 65, with 50% women.
Dr. De Guzman 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 65
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Mervin Jovan De Guzman Diaz wrote 58 Medicare Part D claims in 2024
In 2024, Dr. De Guzman Diaz wrote 58 Medicare Part D claims for 25 patients. 91% of them were for generic drugs.
Dr. De Guzman Diaz's Part D claims by kind of drug, 2024
- Generic53 claims91%
- Brand-name and other5 claims9%
Drug classes CMS tracks in Dr. De Guzman Diaz's Part D claims, 2024
- Antibiotics26%15 of 58 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mervin Jovan De Guzman Diaz takes part in Medicare
Dr. De Guzman Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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. Mervin Jovan De Guzman Diaz received $116 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. De Guzman Diaz from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $116.
Companies that paid Dr. De Guzman Diaz the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mervin Jovan De Guzman 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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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) |
| 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. Mervin Jovan De Guzman 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. Mervin Jovan De Guzman Diaz's NPI number?
Dr. Mervin Jovan De Guzman Diaz's NPI number is 1548876121. It was assigned on September 19, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Mervin Jovan De Guzman Diaz?
Dr. Mervin Jovan De Guzman Diaz is a general practice physician in Humacao, Puerto Rico. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Mervin Jovan De Guzman Diaz practice?
Dr. De Guzman Diaz practices at 355 Ave Font Martelo, Humacao, PR 00791. Dr. De Guzman Diaz's primary practice is Ryder Memorial Hospital in Humacao, Puerto Rico, part of Ryder Memorial Hospital. Dmand AI also links Dr. De Guzman Diaz to 1 group practice or clinic and 1 medical group.
What is Dr. Mervin Jovan De Guzman Diaz's office phone number?
The practice phone on file for Dr. De Guzman Diaz is (787) 852-0768.
What is Dr. Mervin Jovan De Guzman Diaz's medical license number?
Dr. De Guzman Diaz holds Puerto Rico license 17066I.
Which hospitals is Dr. Mervin Jovan De Guzman Diaz affiliated with?
Dr. De Guzman Diaz practices at Ryder Memorial Hospital in Humacao, Puerto Rico.
Does Dr. Mervin Jovan De Guzman Diaz accept Medicare?
Yes. CMS lists Dr. De Guzman Diaz as accepting Medicare assignment.
Has Dr. Mervin Jovan De Guzman Diaz received payments from drug or device companies?
CMS Open Payments shows $116 in general payments to Dr. De Guzman Diaz from 1 company from 2024 to 2024. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Mervin Jovan De Guzman Diaz been practicing?
Dr. De Guzman Diaz graduated from medical school in 2020, 6 years ago.
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