Tanya Hoa Dam, DO
Gastroenterology Physician · Modesto, CA
Tanya Hoa Dam, DO is a gastroenterology physician with a practice address in Modesto, California, and NPI 1104105030, issued on Aug 9, 2011. Check the license (California 20A12410, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tanya Hoa Dam
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 20A12410 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1541 Florida Ave, Modesto, CA 95350
- Phone
- (209) 577-3388
- Enumerated
- Aug 9, 2011
- Record last updated
- Aug 8, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160624001055); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 1541 Florida Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tanya Hoa Dam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12410Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% more Medicare Part D claims than the average gastroenterology physician in 2024
921 Medicare Part D claims for 349 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Omeprazole164 claims
- Sod Sulf-Potass Sulf-Mag Sulf89 claims
- Pantoprazole Sodium82 claims
- Gavilyte-G57 claims
- Dicyclomine Hcl43 claims
- Linzess40 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: $156.00
2 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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
- First Choice Physician PartnersModesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tanya Hoa Dam among 2,140 gastroenterology physician records in California
Tanya Hoa Dam, DO is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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, 23% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2010 · median 2002 among the 1,538 with a school on file
- Record last updated2016 · 60% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Modesto → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- William Griffiths, MDModesto, CA 953501689661720
- Waleed Ibrahim, M.D.Modesto, CA 953501407052244
- Richard Plotzker, MDModesto, CA 953501861489908
- Michael Ringer, MDModesto, CA 953501184611220
- Madhu Kris, M.D.Merced, CA 953481427112366
- Sivakumar Munnangi, M.D.Merced, CA 953481447432463
- Keith Leibowitz, MDModesto, CA 953541083689335
- Safwat Absood, M.D.Modesto, CA 953551932113891
Common questions
What is Tanya Hoa Dam, DO's NPI number?
Tanya Hoa Dam, DO's National Provider Identifier (NPI) is 1104105030, issued on Aug 9, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Tanya Hoa Dam, DO located?
The NPPES record lists a practice address at 1541 Florida Ave, Modesto, CA, 95350. Phone: (209) 577-3388. Providers update this record themselves, so call before visiting.
How can I verify Tanya Hoa Dam, DO's license?
NPPES lists California license number 20A12410, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tanya Hoa Dam, DO prescribe under Medicare Part D?
In 2024, Tanya Hoa Dam, DO had 921 Medicare Part D claims for 349 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.