Dr. Ismael Mercado , MD
General Practice • Bayamon, PR
Calle 2 G-14, Ext. Villa Rica
Bayamon, PR 00959
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Ismael Mercado is listed in NPPES under General Practice.
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NPI assigned on January 4, 2006; this date does not establish years in practice.
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Published CMS data list 28 Original Medicare Part B services in 2023.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023. Published rows only; this is not a quality measure.
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Published Part B service records, 2023:
- 99212 — Established patient outpatient office visit: 28 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2022 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2023). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 7,561 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Synthroid (Levothyroxine Sodium) — 318 prescription fills, including refills.
- Omega-3 Acid Ethyl Esters — 294 prescription fills, including refills.
- Dexamethasone — 286 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 134 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 90% of clinicians listed under General Practice in Bayamon, PR (2024, 147 clinicians with data). Median for this group: 618. Middle half: 151 to 2,946.
More Part D prescriptions than 80% of clinicians listed under General Practice in Puerto Rico (2024, 2,623 clinicians with data). Median for this group: 1,262. Middle half: 241 to 5,106.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 130 in 2019 to 28 in 2023.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019–2023.
Practice Location & Contact Primary Location
Calle 2 G-14
Ext. Villa Rica
Bayamon, PR 00959
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
1998
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
17 people with Original Medicare in 2023
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2023.
Medicare-allowed amount
About $1,285 in 2023
The total amount Medicare approved for these services in 2023. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.
Paid by Medicare
About $690 in 2023
The part of the Medicare-allowed amount that Medicare itself paid in 2023, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2023.
30-day fills
13,813 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$388,259 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $635.60 across 10 records.
By nature of payment
- Food and Beverage: $635.60 across 10 records.
Reporting-company totals (3 largest of 7)
- Merck Sharp & Dohme LLC: $163.21 across 4 records.
- AstraZeneca Pharmaceuticals LP: $118.71 across 1 record.
- Eli Lilly and Company: $118.71 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
28 years (graduated 1998)
CMS Doctors and Clinicians data list 1998 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Mercado has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Mercado as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Bayamon and Puerto Rico
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under General Practice in Bayamon, PR (2024, 147 clinicians with data). Median for this group: 618. Middle half: 151 to 2,946.
More Part D prescriptions than 80% of clinicians listed under General Practice in Puerto Rico (2024, 2,623 clinicians with data). Median for this group: 1,262. Middle half: 241 to 5,106.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under General Practice in Bayamon, PR (2024, 147 clinicians with data). Median for this group: $10,972. Middle half: $2,426 to $167,568.
A higher Part D drug cost than 85% of clinicians listed under General Practice in Puerto Rico (2024, 2,623 clinicians with data). Median for this group: $34,550. Middle half: $2,978 to $214,501.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Mercado are from 2023.
276 active clinicians are listed under General Practice with a practice address in Bayamon, PR (4,225 in Puerto Rico).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Bayamon
0.4% of these 276 clinicians have the CMS telehealth indicator.
25% of these 276 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 78% from 130 in 2019 to 28 in 2023.
- 2019: 130
- 2020: 129
- 2021: 105
- 2022: 115
- 2023: 28
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Medicare-allowed amount
Medicare-allowed amount decreased 84% from $8,125 in 2019 to $1,285 in 2023.
- 2019: $8,125
- 2020: $7,367
- 2021: $6,982
- 2022: $6,057
- 2023: $1,285
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Paid by Medicare
Paid by Medicare decreased 87% from $5,293 in 2019 to $690 in 2023.
- 2019: $5,293
- 2020: $4,814
- 2021: $4,364
- 2022: $3,485
- 2023: $690
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 43% from 5,277 in 2020 to 7,561 in 2024.
- 2020: 5,277
- 2021: 6,139
- 2022: 7,119
- 2023: 7,726
- 2024: 7,561
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30-day fills
30-day fills increased 44% from 9,591 in 2020 to 13,813 in 2024.
- 2020: 9,591
- 2021: 11,427
- 2022: 13,124
- 2023: 14,423
- 2024: 13,813
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Part D drug cost
Part D drug cost increased 32% from $293,478 in 2020 to $388,259 in 2024.
- 2020: $293,478
- 2021: $286,783
- 2022: $357,821
- 2023: $392,693
- 2024: $388,259
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 38% from $1,028.96 in 2021 to $635.60 in 2025.
- 2021: $1,028.96
- 2022: $1,336.14
- 2023: $713.38
- 2024: $767.73
- 2025: $635.60
Sources: CMS Medicare Physician & Other Practitioners (2023), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $635.60.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Eli Lilly and Company |
Food and Beverage
Cash or cash equivalent
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ZEPBOUND | General | $118.71 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $118.71 |
| Amneal Pharmaceuticals LLC |
Food and Beverage
In-kind items and services
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CREXONT | General | $114.30 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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CAPVAXIVE | General | $99.99 |
| Becton, Dickinson and Company |
Food and Beverage
In-kind items and services
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RotarexS 6 F x 135 cm | General | $73.55 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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GARDASIL 9 | General | $29.56 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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GARDASIL 9 | General | $25.95 |
| Verity Pharmaceuticals Inc. |
Food and Beverage
Cash or cash equivalent
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Tlando | General | $25.17 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PAXLOVID | General | $21.95 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
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CAPVAXIVE | General | $7.71 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2022 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2023; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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28 | 13 | $46.39 | $45.89 |
Source: CMS Part B by Provider and Service, 2023; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Synthroid | Levothyroxine Sodium | 318 | 22,763 | $34,478.61 | 94 |
| Omega-3 Acid Ethyl Esters | Omega-3 Acid Ethyl Esters | 294 | 13,500 | $18,125.78 | 93 |
| Dexamethasone | Dexamethasone | 286 | 1,600 | $2,644.14 | 190 |
| Alendronate Sodium | Alendronate Sodium | 282 | 23,258 | $4,435.94 | 114 |
| Gabapentin | Gabapentin | 268 | 15,810 | $3,287.23 | 87 |
| Atorvastatin Calcium | Atorvastatin Calcium | 265 | 22,770 | $3,668.57 | 113 |
| Famotidine | Famotidine | 261 | 10,825 | $2,207.68 | 104 |
| Clonazepam | Clonazepam | 221 | 6,686 | $2,542.82 | 43 |
| Temazepam | Temazepam | 203 | 6,035 | $1,943.23 | 41 |
| Metformin Hcl | Metformin Hcl | 175 | 13,630 | $1,281.24 | 61 |
| Omeprazole | Omeprazole | 172 | 8,010 | $1,551.47 | 66 |
| Ibuprofen | Ibuprofen | 164 | 3,577 | $1,372.83 | 91 |
| Lisinopril | Lisinopril | 151 | 11,775 | $1,026.31 | 61 |
| Azithromycin | Azithromycin | 151 | 1,235 | $2,712.04 | 125 |
| Levothyroxine Sodium | Levothyroxine Sodium | 135 | 9,880 | $2,266.98 | 49 |
| Pantoprazole Sodium | Pantoprazole Sodium | 131 | 6,615 | $1,584.67 | 38 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 106 | 822 | $876.02 | 87 |
| Metoprolol Succinate | Metoprolol Succinate | 102 | 8,580 | $2,301.67 | 42 |
| Montelukast Sodium | Montelukast Sodium | 100 | 7,245 | $1,838.50 | 40 |
| Amlodipine Besylate | Amlodipine Besylate | 99 | 8,010 | $872.12 | 32 |
| Losartan Potassium | Losartan Potassium | 97 | 7,950 | $1,278.86 | 40 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 93 | 7,890 | $1,927.74 | 44 |
| Fenofibrate | Fenofibrate Nanocrystallized | 87 | 7,650 | $3,778.24 | 43 |
| Glipizide | Glipizide | 87 | 6,690 | $1,938.25 | 31 |
| Pentoxifylline | Pentoxifylline | 84 | 5,970 | $2,905.31 | 42 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20040511001618
PR
3971592130
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
General Practice
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated January 04, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other General Practices in Bayamon
- Dr. Noel Silva, MD
- Roberto Felix Berrios
- Dr. Angelita Alonzo De La Cruz, MD
- Dr. Tania Torres Fernandez, MD
- Dr. Gladys Deliz-Figueroa, MD
- Dr. Martin Martino, MD
Mailing Address
Po Box 52217
Toa Baja, PR 009502217
Phone: 7877854402