2026 NPPES data Gastroenterology Physician NPI 1609862663 M.D.
Verify on CMS →

RAMON REYES, M.D.

Gastroenterology Physician in WEST DES MOINES, Iowa. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 665 beneficiaries · Gastroenterology Physician avg: 833
What the federal data reveals: RAMON REYES, M.D. is a Gastroenterology Physician ([object Object]) practicing in WEST DES MOINES, Iowa with a Medicare Part D prescribing footprint of 2K claims across 665 beneficiaries .

What stands out: RAMON REYES, M.D. filed 1,757 Medicare Part D claims in 2023 across WEST DES MOINES, Iowa. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

RAMON REYES, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

RAMON REYES, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 09/26/2005

NPI 1609862663

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

1,757 111% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Iowa

How Gastroenterology Physician compares to other specialties among Iowa providers

Iowa providers

Gastroenterology Physician share within Iowa

1. Gastroenterology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gastroenterology Physician share within Iowa

Specialty board-certification context

Estimated specialty board-certified rate — Gastroenterology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gastroenterology Physician ABMS/AOA estimate

Est. board-certified rate (Gastroenterology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gastroenterology Physician) — ABMS / AOA estimate

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).

RAMON REYES, M.D. is a Gastroenterology Physician provider practicing in WEST DES MOINES, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1609862663. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

RAMON REYES, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 5950 UNIVERSITY AVE, WEST DES MOINES, IA, 50266, with a listed phone of (515) 875-9115. NPI 1609862663 was issued on 09/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what REYES most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,757 prescription claims written by this provider, covering 665 Medicare beneficiaries and totaling roughly $654K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

5950 UNIVERSITY AVE
WEST DES MOINES, IA 50266

Provider Details

NPI 1609862663
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 09/26/2005

Hospital and facility affiliations

Facilities where RAMON REYES, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

THE IOWA CLINIC PC
WEST DES MOINES, IA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,757
Total Claims
$654K
Total Drug Cost
665
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,336
Total Day Supply
56,568
Generic Drug Cost
$121K
Antibiotic Claims
22

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
1.02
Gender Split
58% female / 42% male
Age Distribution
<65: 51, 65-74: 380, 75-84: 211, 85+: 23

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Pantoprazole Sodium
331
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
259
Famotidine
110
Dexlansoprazole Dr
Dexlansoprazole
101
Sucralfate
80
Esomeprazole Magnesium
62
Colesevelam Hcl
53
Omeprazole
52
Azathioprine
46
Linzess
Linaclotide
42

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Gastroenterology Physician Overview

How RAMON REYES, M.D. fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

RAMON REYES, M.D.'s 1,757 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Iowa

Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as REYES.

Compare Gastroenterology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RAMON REYES, M.D.'s specialty?
RAMON REYES, M.D. specializes in Gastroenterology Physician and practices in WEST DES MOINES, Iowa. Credentials: M.D..
How much does RAMON REYES, M.D. prescribe under Medicare Part D?
In 2023, RAMON REYES, M.D. wrote 1,757 Medicare Part D claims totaling $654K in drug costs for 665 beneficiaries.
Where is RAMON REYES, M.D. located?
RAMON REYES, M.D. is located at 5950 UNIVERSITY AVE, WEST DES MOINES, IA, 50266. Phone: (515) 875-9115.
What is RAMON REYES, M.D.'s NPI number?
RAMON REYES, M.D.'s National Provider Identifier (NPI) is 1609862663, issued on 09/26/2005.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does RAMON REYES, M.D. prescribe most often?
Based on 2023 Medicare Part D data, RAMON REYES, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Peg 3350-Electrolyte, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RAMON REYES, M.D. accept Medicare?
RAMON REYES, M.D. appears in CMS Medicare data with 1,757 Part D claims and 665 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RAMON REYES, M.D.'s credentials?
RAMON REYES, M.D.'s NPI is 1609862663 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

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 (2023). 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 April 2026 (NPPES) / 2023 (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