NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1891795381 M.D.
Verify on CMS → Omar Perez Jimenez, M.D.
Gastroenterology Physician in Mayaguez, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
739
Medicare Part D claims · 276 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$5.2K
37 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Omar Perez Jimenez, M.D. filed 739 Medicare Part D claims in 2024 as a Gastroenterology Physician in Mayaguez, Puerto Rico, prescribing 76% generic.
- 739
- Part D claims, 2024
- 76%
- generic prescribing
- $5.2K
- industry payments (Sunshine Act)
- ≥70th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Omar Perez Jimenez, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1891795381), first enumerated 07/26/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 739 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$5.2K in reported industry payments (37 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1891795381 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1891795381
- ENUM-LEGACY 2005
- TAX-MID 17K Gastroenterology Physician
- RX-LIGHT 739
- BOOK-THIN 156 in Puerto Rico
- PHOTO-ENUM Lenkala Mallaiah · 2005
Omar Perez Jimenez, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
739 ≥ 70th percentile 70% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Omar Perez Jimenez, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Omar Perez Jimenez, M.D.?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
739 13% vs specialty avg
Specialty distribution in Puerto Rico
How Gastroenterology Physician compares to other specialties among Puerto Rico providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1891795381 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/26/2005 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Omar Perez Jimenez, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$5.2K
Largest payer
Janssen Pharmaceuticals, Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Omar Perez Jimenez, M.D. - brand share 24.0%
Gastroenterology Physician average
24% brand-name claims vs 76% generic, on 739 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
739
Total Claims
$493K
Total Drug Cost
276
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 796.233
- Total Day Supply
- 17,997
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $476K
- Generic Drug Cost
- $17K
- Antibiotic Claims
- 23
Patient Demographics
- Average Patient Age
- 70.8 years
- Avg HCC Risk Score
- 1.76
- Gender Split
- 42% female / 58% male
- Age Distribution
- <65: 44, 65-74: 135, 75-84: 82, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Omar Perez Jimenez, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Pantoprazole Sodium
Pantoprazole Sodium
135 claims
- Suprep
Suprep
93 claims
- Famotidine
Famotidine
76 claims
- Esomeprazole Magne…
Esomeprazole Magnesium
69 claims
- Omeprazole 42
Omeprazole
42 claims
- Metoclopramide Hcl 34
Metoclopramide Hcl
34 claims
- Sucralfate 28
Sucralfate
28 claims
- Sod Sulf-Potass Su… 26
Sod Sulf-Potass Sulf-Mag Sulf
26 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 135 |
| Suprep Sodium, Potassium,mag Sulfates | 93 |
| Famotidine | 76 |
| Esomeprazole Magnesium | 69 |
| Omeprazole | 42 |
| Metoclopramide Hcl | 34 |
| Sucralfate | 28 |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 26 |
| Lansoprazole | 15 |
| Sutab Sod Sulf/Pot Chloride/Mag Sulf | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Omar Perez Jimenez, M.D. fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Omar Perez Jimenez, M.D.'s 739 claims are below the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Perez Jimenez, both outside Puerto Rico so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Perez Jimenez.
One of 156 Gastroenterology Physician providers enrolled in Puerto Rico, 5 are shown here.
Dr. Yamilka Abreu Delgado
MD
Humacao, PR
Dr. Melvyn Acosta
M.D.
Hato Rey, PR
Dr. Mamie Annexy Lopez
MD
Manati, PR
Dr. Ivan Antunez Gonzalez
M.D.
Guaynabo, PR
Dr. Nestor Aponte-Reyes
MD
Manati, PR
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Omar Perez Jimenez, M.D.'s specialty? ▼
Omar Perez Jimenez, M.D. specializes in Gastroenterology Physician and practices in Mayaguez, Puerto Rico. Credentials: M.D..
How much does Omar Perez Jimenez, M.D. prescribe under Medicare Part D? ▼
In 2024, Omar Perez Jimenez, M.D. wrote 739 Medicare Part D claims totaling $493K in drug costs for 276 beneficiaries.
Where is Omar Perez Jimenez, M.D. located? ▼
Omar Perez Jimenez, M.D. is located at 351 AVE HOSTOS, Mayaguez, PR, 00680. Phone: (787) 805-5610.
What is Omar Perez Jimenez, M.D.'s NPI number? ▼
Omar Perez Jimenez, M.D.'s National Provider Identifier (NPI) is 1891795381, issued on 07/26/2005.
Does Omar Perez Jimenez, M.D. prescribe more brand-name or generic drugs? ▼
Omar Perez Jimenez, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $476K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Omar Perez Jimenez, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Omar Perez Jimenez, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Suprep, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Omar Perez Jimenez, M.D. accept Medicare? ▼
Omar Perez Jimenez, M.D. appears in CMS Medicare data with 739 Part D claims and 276 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Omar Perez Jimenez, M.D.'s credentials? ▼
Omar Perez Jimenez, M.D.'s NPI is 1891795381 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.