NPPES file of Aug 9, 2026

Dinh X. Dam, M.D.

Internal Medicine Physician · San Jose, CA

Dinh X. Dam, M.D. is an internal medicine physician with a practice address in San Jose, California, and NPI 1518936616, issued on Mar 14, 2006. Check the license (California A77320, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518936616
Name
Dinh X. Dam
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A77320 CA
Self-reported in NPPES; status is on the state search
Practice location
200 N Jackson Ave, San Jose, CA 95116
Phone
(408) 923-8080
Enumerated
Mar 14, 2006
Record last updated
May 17, 2024
Fax
(408) 923-8549
Medicaid ID
00A773200 CA
Medicare enrollment
Enrolled (PECOS I20040827000405); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 200 N Jackson Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joel Santos, D.D.S.Dentist1952484925
  2. Pacifico Santos, M.D.Adult Medicine Physician1265547608

Verify Dinh X. Dam in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A77320
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.0 times the Medicare Part D claims of the average internal medicine physician in 2024

6,472 Medicare Part D claims for 381 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 63 claims were for opioids.

  1. Dinh Dam6,472
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium691 claims
  2. Amlodipine Besylate525 claims
  3. Metformin Hcl467 claims
  4. Losartan-Hydrochlorothiazide350 claims
  5. Losartan Potassium338 claims
  6. Pioglitazone Hcl185 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: $997.51

12 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dinh Dam$997.51
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Dinh X. Dam among 17,696 internal medicine physician records in California

Dinh X. Dam, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1980 · median 2004 among the 11,065 with a school on file
  • Record last updated2024 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

428 internal medicine physician records list a practice address in San Jose

They are 428 of the 20,925 NPPES records with a practice address in San Jose, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Komal Bhatt, MDSan Jose, CA 951161003824699
  2. Richard Cathey, M.D.San Jose, CA 951161750343323
  3. Jaco Fishenfeld, MDSan Jose, CA 951161689639577
  4. Jose Maria Guanzon, MDSan Jose, CA 951161134150881
  5. Teresita Guanzon, MDSan Jose, CA 951161306877055
  6. Dwight Lim, MDSan Jose, CA 951161124084561
  7. Syed Majid, MD, FRCP, FASAMSan Jose, CA 951161225009533
  8. Vinh Nguyen, M.D.San Jose, CA 951161720086556

Common questions

What is Dinh X. Dam, M.D.'s NPI number?

Dinh X. Dam, M.D.'s National Provider Identifier (NPI) is 1518936616, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Dinh X. Dam, M.D. located?

The NPPES record lists a practice address at 200 N Jackson Ave, San Jose, CA, 95116. Phone: (408) 923-8080. Providers update this record themselves, so call before visiting.

How can I verify Dinh X. Dam, M.D.'s license?

NPPES lists California license number A77320, 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 Dinh X. Dam, M.D. prescribe under Medicare Part D?

In 2024, Dinh X. Dam, M.D. had 6,472 Medicare Part D claims for 381 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.