Tien I Karleen Su, M.D.
Rheumatology Physician · Whittier, CA
Tien I Karleen Su, M.D. is a rheumatology physician with a practice address in Whittier, California, and NPI 1750581930, issued on Jul 25, 2007. Check the license (California A98890, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tien I Karleen Su
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A98890 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12456 Washington Blvd, Whittier, CA 90602
- Phone
- (562) 758-6600
- Enumerated
- Jul 25, 2007
- Record last updated
- Jan 5, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (562) 758-6709
- Medicaid ID
- 00A988900 CA
- Medicare enrollment
- Enrolled (PECOS I20110210000579); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 12456 Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Bent, NPFamily Nurse Practitioner1659469229
- Patricia Cox, RNPFamily Nurse Practitioner1457575144
- Gilbert Gelfand, M.D.Rheumatology Physician1942247580
- Julie HuangPhysician Assistant1730878554
- Branden Ireifej, MDRheumatology Physician1811524853
- Ericsson Trieu, PA-CPhysician Assistant1144685504
Verify Tien I Karleen Su in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98890Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,125 Medicare Part D claims for 329 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Alendronate Sodium91 claims
- Gabapentin87 claims
- Diclofenac Sodium78 claims
- Methotrexate72 claims
- Hydroxychloroquine Sulfate62 claims
- Folic Acid50 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: $8,529.36
25 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Amicus Arthritis And Osteoporosis Center IncWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tien I Karleen Su among 926 rheumatology physician records in California
Tien I Karleen Su, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2005 · median 2003 among the 641 with a school on file
- Record last updated2016 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Whittier → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Gilbert Gelfand, M.D.Whittier, CA 906021942247580
- Branden Ireifej, MDWhittier, CA 906021811524853
- Seyedehsara Seyedali, MDWhittier, CA 906021336554328
- Jessica Wong, MDWhittier, CA 906021437736550
- Mimi Yang, PA-CWhittier, CA 906021659837250
- Kei-Lwun Yee, MDWhittier, CA 906021649859885
- Edward Harris, M.D.Whittier, CA 906011780730838
- Tandis Mahani, MDWhittier, CA 906031245818178
Common questions
What is Tien I Karleen Su, M.D.'s NPI number?
Tien I Karleen Su, M.D.'s National Provider Identifier (NPI) is 1750581930, issued on Jul 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tien I Karleen Su, M.D. located?
The NPPES record lists a practice address at 12456 Washington Blvd, Whittier, CA, 90602. Phone: (562) 758-6600. Providers update this record themselves, so call before visiting.
How can I verify Tien I Karleen Su, M.D.'s license?
NPPES lists California license number A98890, 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 Tien I Karleen Su, M.D. prescribe under Medicare Part D?
In 2024, Tien I Karleen Su, M.D. had 1,125 Medicare Part D claims for 329 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.