Stanley S. Tu, M.D.
Internal Medicine Physician · Pasadena, CA
Stanley S. Tu, M.D. is an internal medicine physician with a practice address in Pasadena, California, and NPI 1215011879, issued on Oct 24, 2006. Check the license (California A91082, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stanley S. Tu
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A91082 CA
Self-reported in NPPES; status is on the state search - Practice location
- 959 E Walnut St, Pasadena, CA 91106
- Phone
- (626) 795-1831
- Enumerated
- Oct 24, 2006
- Record last updated
- Jul 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (626) 795-2716
- Medicare enrollment
- Enrolled (PECOS I20070118000492); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 959 E Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Arbi Khodadadi, M.D.Infectious Disease Physician1730271099
- Anthony Koerner, M.D.Internal Medicine Physician1487620357
- Donald Kroe, M.D.Pulmonary Disease Physician1811963762
Verify Stanley S. Tu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91082Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,685 Medicare Part D claims for 579 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 38 claims were for opioids.
Most prescribed
- Atorvastatin Calcium643 claims
- Amlodipine Besylate372 claims
- Levothyroxine Sodium277 claims
- Losartan Potassium275 claims
- Metformin Hcl275 claims
- Lisinopril207 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,036.10
44 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. 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.
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
- Foothill Pulmonary And Critical Care Consultants Medical Group Inc.Pasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stanley S. Tu among 17,696 internal medicine physician records in California
Stanley S. Tu, 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
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 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).
137 internal medicine physician records list a practice address in Pasadena
They are 137 of the 10,525 NPPES records with a practice address in Pasadena, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Pasadena → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- George Abrahamian, M.D.Pasadena, CA 911061568812196
- Robert Cann, M.D.Pasadena, CA 911061205939659
- Cindy Carson, MDPasadena, CA 911061891982633
- Irina Jasper, MDPasadena, CA 911061356421903
- Anthony Koerner, M.D.Pasadena, CA 911061487620357
- Marilynn Moore, MDPasadena, CA 911061306824545
- Gregor Paronian, M.D.Pasadena, CA 911061366627945
- Thirumala Raju, MDPasadena, CA 911061447346002
Common questions
What is Stanley S. Tu, M.D.'s NPI number?
Stanley S. Tu, M.D.'s National Provider Identifier (NPI) is 1215011879, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stanley S. Tu, M.D. located?
The NPPES record lists a practice address at 959 E Walnut St, Pasadena, CA, 91106. Phone: (626) 795-1831. Providers update this record themselves, so call before visiting.
How can I verify Stanley S. Tu, M.D.'s license?
NPPES lists California license number A91082, 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 Stanley S. Tu, M.D. prescribe under Medicare Part D?
In 2024, Stanley S. Tu, M.D. had 6,685 Medicare Part D claims for 579 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stanley S. Tu, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.