Dr. Issa Mahmud, MD
- Medicare services, 2024
- 11
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 728
- Hospital affiliations
- 1
- Industry payments
- $389
- Practice address
- 130 Winston Churchill, San Juan, PR 00926
- Practice phone
- Call (787) 858-2580
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Centro Medico Wilma N Vazquez
San Juan, Puerto Rico
Find Dr. Mahmud'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. Issa Mahmud is a general practice physician in San Juan, Puerto Rico
Dr. Mahmud practices at Centro Medico Wilma N Vazquez in San Juan, Puerto Rico.
Dr. Mahmud's NPI, 1972625580, was assigned on April 4, 2007. Dr. Mahmud holds Puerto Rico license 15573.
- NPI
- 1972625580NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789780289
- NPI enumeration date
- April 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 858-2580
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Issa Mahmud practices at Centro Medico Wilma N Vazquez in San Juan, Puerto Rico
Dr. Mahmud's primary practice is Centro Medico Wilma N Vazquez, at 130 Winston Churchill, San Juan, PR 00926 in San Juan County. The practice phone is (787) 858-2580.
- Centro Medico Wilma N Vazquez130 Winston Churchill, San Juan, PR 00926 · San Juan CountyPhone(787) 858-2580
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Issa Mahmud is affiliated with 3 sites of care and 1 medical group
Dr. Mahmud's primary practice is Centro Medico Wilma N Vazquez in San Juan, Puerto Rico. Dr. Mahmud is also affiliated with Sistema de Salud Wilma N. Vázquez. The medical group on file is Sistema de Salud Wilma N. Vázquez. Dmand AI also links Dr. Mahmud to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Issa Mahmud's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mahmud practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Centro Medico Wilma N Vazquez | Available with a free account |
| +2 more affiliated sites | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Issa Mahmud is one of 2,604 general practice physicians in Puerto Rico
General practice is Dr. Mahmud's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Mahmud is licensed in Puerto Rico.
Specialties and state licenses
- General practice, Puerto RicoPrimary
General practice physicians near Dr. Mahmud
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. Issa Mahmud billed Medicare for 11 services in 2024
CMS data shows 11 Medicare services from Dr. Mahmud across 1 procedure code in 2024, for 13 Medicare patients. Medicare paid $535 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mahmud's Medicare services by type, 2021 to 2024
- 2021
- 2024
- Office and hospital visits
- 2021: 372024: 1170%
Dr. Mahmud compared with the Puerto Rico median for general practice physicians, 2024
- Dr. Mahmud
- Puerto Rico median
- Medicare services
- 11vs 3468% below
- Medicare patients
- 13vs 1932% below
- Part D claims
- 549vs 73525% below
Medians across 3,001 general practice physicians in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Mahmud'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. Mahmud?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mahmud 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. Issa Mahmud treated 13 Medicare patients in 2024, average age 68
CMS counts 13 Medicare patients who saw Dr. Mahmud in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high blood pressure. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mahmud's median patient age at 77, with 53% women.
Dr. Mahmud's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Mahmud's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mahmud's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Issa Mahmud wrote 728 Medicare Part D claims in 2024
In 2024, Dr. Mahmud wrote 728 Medicare Part D claims for 516 patients. 93% of them were for generic drugs. CMS names the drug for 549 of them, across 17 drugs with 11 or more claims each, at $6,662 in total drug cost. In 2023, CMS named 633 claims across 20 drugs.
Dr. Mahmud's Part D claims by kind of drug, 2024
- Generic679 claims93%
- Brand-name and other49 claims7%
Dr. Mahmud'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. Mahmud's Part D claims, 2024
- Opioids7%50 of 728 claims
- Antibiotics25%179 of 728 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: 6332024: 54913%
Drugs named by CMS: 17 in 2024, 20 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
How Dr. Issa Mahmud takes part in Medicare
Dr. Mahmud 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. Issa Mahmud received $389 in industry payments from 2018 to 2020
CMS Open Payments shows 2 general payments to Dr. Mahmud from 2 drug and device companies from 2018 to 2020. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $365.
General payments to Dr. Mahmud by program year, 2018 to 2020
Companies that paid Dr. Mahmud the most, 2018 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Issa Mahmud'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 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) |
| 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. Issa Mahmud
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. Issa Mahmud's NPI number?
Dr. Issa Mahmud's NPI number is 1972625580. It was assigned on April 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Issa Mahmud?
Dr. Issa Mahmud 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. Issa Mahmud practice?
Dr. Mahmud practices at 130 Winston Churchill, San Juan, PR 00926. Dr. Mahmud's primary practice is Centro Medico Wilma N Vazquez in San Juan, Puerto Rico. Dmand AI also links Dr. Mahmud to 1 group practice or clinic.
What is Dr. Issa Mahmud's office phone number?
The practice phone on file for Dr. Mahmud is (787) 858-2580.
What is Dr. Issa Mahmud's medical license number?
Dr. Mahmud holds Puerto Rico license 15573.
Which hospitals is Dr. Issa Mahmud affiliated with?
Dr. Mahmud is affiliated with Sistema de Salud Wilma N. Vázquez.
What medical group is Dr. Issa Mahmud part of?
Dr. Mahmud is linked to Sistema de Salud Wilma N. Vázquez.
Does Dr. Issa Mahmud accept Medicare?
Yes. CMS data shows Dr. Mahmud billed Medicare for 11 services in 2024, and Dr. Mahmud accepts Medicare assignment.
How many Medicare patients does Dr. Issa Mahmud see?
CMS counts 13 Medicare patients who saw Dr. Mahmud in 2024, with an average age of 68.
What services does Dr. Issa Mahmud bill to Medicare?
In 2024, Dr. Mahmud's most billed Medicare services were emergency department visit (99283).
Show 3 more questionsShow fewer questions
What drugs does Dr. Issa Mahmud prescribe most?
In 2024 Medicare Part D data, Dr. Mahmud's most prescribed drugs by claims were Nabumetone, Famotidine and Montelukast Sodium.
Has Dr. Issa Mahmud received payments from drug or device companies?
CMS Open Payments shows $389 in general payments to Dr. Mahmud from 2 companies from 2018 to 2020. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Issa Mahmud been practicing?
Dr. Mahmud graduated from medical school in 1997, 29 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