Madhan Srinath Iyengar, M.D.
Gastroenterology Physician · Lone Tree, CO
Madhan Srinath Iyengar, M.D. is a gastroenterology physician with a practice address in Lone Tree, Colorado, and NPI 1326316647, issued on Dec 1, 2011. Check the license (Colorado DR.0057835, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Madhan Srinath Iyengar
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- DR.0057835 CO
A118800 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10240 Park Meadows Dr, Lone Tree, CO 80124
- Phone
- (303) 338-4545
- Enumerated
- Dec 1, 2011
- Record last updated
- May 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 9000149020 CO
- Medicare enrollment
- Enrolled (PECOS I20170720002985); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 2010
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 334 in Colorado → Look up another NPI →
Also registered at 10240 Park Meadows Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Adams, NPAcute Care Nurse Practitioner1770711749
- Angela Allen, AU.DAudiologist1649307653
- Sara Alley, AU.DAudiologist1720104342
- Scott Andersen, MDDiagnostic Radiology Physician1851376347
- Mei Ling Anderson, RNRegistered Nurse1043194558
- Bradley Andrews, MDOtolaryngology Physician1891822896
Verify Madhan Srinath Iyengar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0057835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average gastroenterology physician in 2024
352 Medicare Part D claims for 216 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Gavilyte-C175 claims
- Budesonide Dr44 claims
- Pantoprazole Sodium35 claims
- Ondansetron Odt23 claims
- Azathioprine15 claims
- Promethazine Hcl11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $20.91
1 payment: food and beverage; the largest payer was Cardiva Medical, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Colorado Permanente Medical Group PCLone Tree, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Madhan Srinath Iyengar among 334 gastroenterology physician records in Colorado
Madhan Srinath Iyengar, M.D. is one of 334 gastroenterology physician records with a practice address in Colorado. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 74% of them.
- NPI issued2011 · 74% of these records are older, 25% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 2003 among the 258 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 gastroenterology physician records list a practice address in Lone Tree
They are 25 of the 1,405 NPPES records with a practice address in Lone Tree, and 334 gastroenterology physician records in Colorado.
All 334 in Colorado → Every provider in Lone Tree → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Vaman Jakribettuu, MDLone Tree, CO 801241487696043
- Geoffrey Jensen, MDLone Tree, CO 801241518013143
- Lawrence Kim, M.DLone Tree, CO 801241275647414
- Hanna Kraus, MDLone Tree, CO 801241659392793
- Tom Matzakos, MDLone Tree, CO 801241619004629
- Louis Morris, MDLone Tree, CO 801241407990294
- Matthew Nichols, M.DLone Tree, CO 801241952451379
- Cary Patt, M.DLone Tree, CO 801241801900048
Common questions
What is Madhan Srinath Iyengar, M.D.'s NPI number?
Madhan Srinath Iyengar, M.D.'s National Provider Identifier (NPI) is 1326316647, issued on Dec 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Madhan Srinath Iyengar, M.D. located?
The NPPES record lists a practice address at 10240 Park Meadows Dr, Lone Tree, CO, 80124. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Madhan Srinath Iyengar, M.D.'s license?
NPPES lists Colorado license number DR.0057835, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Madhan Srinath Iyengar, M.D. prescribe under Medicare Part D?
In 2024, Madhan Srinath Iyengar, M.D. had 352 Medicare Part D claims for 216 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.