Timothy Tien-Wei Cheng, M.D.
Orthopaedic Surgery Physician · Fountain Valley, CA
Timothy Tien-Wei Cheng, M.D. is an orthopaedic surgery physician with a practice address in Fountain Valley, California, and NPI 1972940872, issued on May 31, 2013. Check the license (California A132691, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy Tien-Wei Cheng
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- A132691 CA
278393 MA
Self-reported in NPPES; status is on the state search - Practice location
- 8700 Warner Ave Ste 140, Fountain Valley, CA 92708
- Phone
- (714) 850-7300
- Enumerated
- May 31, 2013
- Record last updated
- Jan 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20201006001511); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 8700 Warner Ave Ste 140
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Canaletti, PA-CMedical Physician Assistant1124056767
- Nikhil Chokshi, MDAdult Reconstructive Orthopaedic Surgery Physician1942413018
- Ulemj Dugarnyam, PAPhysician Assistant1487423471
- Bhavik Patel, MDOrthopaedic Hand Surgery Physician1750919759
- Ritt RungsisullatanontPhysician Assistant1508587676
- Mohammad Zalzaleh, DOOrthopaedic Surgery Physician1235792276
Verify Timothy Tien-Wei Cheng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A132691Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
37 Medicare Part D claims for 23 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of 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: $16.00
1 payment: food and beverage; the largest payer was Saxum Surgical, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 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
- OrthowestIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Tien-Wei Cheng among 2,276 orthopaedic surgery physician records in California
Timothy Tien-Wei Cheng, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 80% of them.
- NPI issued2013 · 80% of these records are older, 18% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2013 · median 2003 among the 1,347 with a school on file
- Record last updated2023 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Fountain Valley → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Kenneth Chambers, M.D., M.P.HFountain Valley, CA 927081023347846
- Ramy Elias, M.D.Fountain Valley, CA 927081437165362
- Ryan Fan, MDFountain Valley, CA 927081720052459
- Kathryn Perkins Tift, M.D.Fountain Valley, CA 927081831382662
- Peter Pyrko, M.D., PH.D.Fountain Valley, CA 927081467695056
- Richard Raczka, MDFountain Valley, CA 927081194744680
- Daniel Stein, M.D.Fountain Valley, CA 927081205864477
- Minal TapadiaFountain Valley, CA 927081982995916
Common questions
What is Timothy Tien-Wei Cheng, M.D.'s NPI number?
Timothy Tien-Wei Cheng, M.D.'s National Provider Identifier (NPI) is 1972940872, issued on May 31, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Tien-Wei Cheng, M.D. located?
The NPPES record lists a practice address at 8700 Warner Ave Ste 140, Fountain Valley, CA, 92708. Phone: (714) 850-7300. Providers update this record themselves, so call before visiting.
How can I verify Timothy Tien-Wei Cheng, M.D.'s license?
NPPES lists California license number A132691, 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 Timothy Tien-Wei Cheng, M.D. prescribe under Medicare Part D?
In 2024, Timothy Tien-Wei Cheng, M.D. had 37 Medicare Part D claims for 23 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.