2026 NPPES data Gastroenterology Physician NPI 1669657581 M.D.. M.S.
Verify on CMS →

Chandraprakash Umapathy, M.D.. M.S.

Gastroenterology Physician in Weirton, West Virginia. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 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
218
Medicare Part D claims · 72 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Chandraprakash Umapathy, M.D.. M.S. filed 218 Medicare Part D claims in 2023 as a Gastroenterology Physician in Weirton, West Virginia, prescribing 74% generic.

218
Part D claims, 2023
74%
generic prescribing
Likely
board-certified (heuristic)

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.

Chandraprakash Umapathy, M.D.. M.S.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

218 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic, not verified)

Chandraprakash Umapathy, M.D.. M.S. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Chandraprakash Umapathy, M.D.. M.S.?

Quality data not reported

NPI registry status

Active

Issued 01/09/2008

NPI 1669657581

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

218 74% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in West Virginia

How Gastroenterology Physician compares to other specialties among West Virginia providers

West Virginia providers

Largest specialties in West Virginia (% of in-state providers)

Personal Care Attendant - 38.4%Personal Care Attendant38.4%Home Health Aide - 8.2%Home Health Aide8.2%Community Health Worker - 5.2%Community Health Worker5.2%Homemaker - 3.1%Homemaker3.1%Pharmacist - 3%Pharmacist3%Student in an Organized Health Care Education/Training Program - 2.9%Student in an Organized Health Care Education/Training Program2.9%Gastroenterology Physician - 0.1%Gastroenterology Physician0.1%
Largest specialties in West Virginia (% of in-state 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:

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).

Chandraprakash Umapathy, M.D.. M.S. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D.. M.S. credentials at 701 COLLIERS WAY, Weirton, WV, 26062, with a listed phone of (304) 914-3081. NPI 1669657581 was issued on 01/09/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Umapathy 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 218 prescription claims written by this provider, covering 72 Medicare beneficiaries and totaling roughly $69K in drug spend, split 26% brand-name and 74% generic by claim count. 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

701 COLLIERS WAY
Weirton, WV 26062

Provider Details

NPI 1669657581
Specialty Gastroenterology Physician
Credentials M.D.. M.S.
Gender Male
NPI Issued 01/09/2008

Hospital and facility affiliations

Facilities where Chandraprakash Umapathy, M.D.. M.S. 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.

University OF Texas Health Science Center AT San Antonio
San Antonio, TX
Wmc Physician Practices LLC
Weirton, WV

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

Brand vs generic prescribing mix · Above average

Chandraprakash Umapathy, M.D.. M.S. - brand share 26.0%
Gastroenterology Physician average

26% brand-name claims vs 74% generic, on 218 2023 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 2023.

218
Total Claims
$69K
Total Drug Cost
72
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
407
Total Day Supply
11,067
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$60K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
68.3 years
Avg HCC Risk Score
1.41
Gender Split
56% female / 44% male

Top Prescribed Drugs (Medicare Part D)

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

What Chandraprakash Umapathy, M.D.. M.S. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Omeprazole
31
Pantoprazole Sodium
27
Linzess
Linaclotide
21
Esomeprazole Magnesium
20
Famotidine
20
Gavilyte-G
"Peg3350/Sod Sulf
N/A
Peg-3350 And Electrolytes
"Peg3350/Sod Sulf
N/A

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

Gastroenterology Physician Overview

How Chandraprakash Umapathy, M.D.. M.S. fits within the Gastroenterology Physician landscape nationally.

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

Chandraprakash Umapathy, M.D.. M.S.'s 218 claims are below the specialty average of 833.

Nearby Gastroenterology Physician Providers in West Virginia

Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as Umapathy.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the West Virginia medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Chandraprakash Umapathy, M.D.. M.S.'s specialty?
Chandraprakash Umapathy, M.D.. M.S. specializes in Gastroenterology Physician and practices in Weirton, West Virginia. Credentials: M.D.. M.S..
How much does Chandraprakash Umapathy, M.D.. M.S. prescribe under Medicare Part D?
In 2023, Chandraprakash Umapathy, M.D.. M.S. wrote 218 Medicare Part D claims totaling $69K in drug costs for 72 beneficiaries.
Where is Chandraprakash Umapathy, M.D.. M.S. located?
Chandraprakash Umapathy, M.D.. M.S. is located at 701 COLLIERS WAY, Weirton, WV, 26062. Phone: (304) 914-3081.
What is Chandraprakash Umapathy, M.D.. M.S.'s NPI number?
Chandraprakash Umapathy, M.D.. M.S.'s National Provider Identifier (NPI) is 1669657581, issued on 01/09/2008.
Does Chandraprakash Umapathy, M.D.. M.S. prescribe more brand-name or generic drugs?
Chandraprakash Umapathy, M.D.. M.S.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $60K in brand drug costs.
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 Chandraprakash Umapathy, M.D.. M.S. prescribe most often?
Based on 2023 Medicare Part D data, Chandraprakash Umapathy, M.D.. M.S.'s most frequently prescribed drugs include Omeprazole, Pantoprazole Sodium, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chandraprakash Umapathy, M.D.. M.S. accept Medicare?
Chandraprakash Umapathy, M.D.. M.S. appears in CMS Medicare data with 218 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chandraprakash Umapathy, M.D.. M.S.'s credentials?
Chandraprakash Umapathy, M.D.. M.S.'s NPI is 1669657581 with credentials M.D.. M.S.. 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

Compiled from official public sources by the PlainDoctor editorial team.