Calvin Chih-Chia Wu, M.D.
Endocrinology, Diabetes & Metabolism Physician · Glendale, CA
Calvin Chih-Chia Wu, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Glendale, California, and NPI 1659646891, issued on Mar 21, 2012. Check the license (California A122403, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Calvin Chih-Chia Wu
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A122403 CA
Self-reported in NPPES; status is on the state search - Practice location
- 330 N Brand Blvd Ste 700, Glendale, CA 91203
- Phone
- (917) 382-0901
- Enumerated
- Mar 21, 2012
- Record last updated
- Jul 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20170717001562); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 330 N Brand Blvd Ste 700
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suzan AbboudHealth & Wellness Coach1518517861
- Omar CamachoHealth & Wellness Coach1679317879
- Alexa Esquivel MoralesHealth & Wellness Coach1669227476
- Camber Gleim, NBC-HWCHealth & Wellness Coach1013703347
- Natalie Gougeon, LCSWClinical Social Worker1700214038
- Casey Hagerman, NBC-HWCMental Health Counselor1124895891
Verify Calvin Chih-Chia Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122403Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
49 Medicare Part D claims for 13 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Mounjaro11 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: $56.15
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Calvin Chih-Chia Wu among 1,131 endocrinology, diabetes & metabolism physician records in California
Calvin Chih-Chia Wu, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2003 among the 779 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Glendale → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- William Pullen, M.D.Glendale, CA 912031104977248
- Eliana Berger, M.D.Glendale, CA 912041790975886
- Leon Kujmanian, M.D.Glendale, CA 912021194827782
- Martin Montoro, M.D.Glendale, CA 912041841372497
- Zarmen Israelian, M.D.Glendale, CA 912051417911314
- Oliver Ong, M.D.Glendale, CA 912051811951734
- Jhanna Nariyants, D.O.Glendale, CA 912081629163035
- Warren Lee, MD, MHSPasadena, CA 911071942696448
Common questions
What is Calvin Chih-Chia Wu, M.D.'s NPI number?
Calvin Chih-Chia Wu, M.D.'s National Provider Identifier (NPI) is 1659646891, issued on Mar 21, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Calvin Chih-Chia Wu, M.D. located?
The NPPES record lists a practice address at 330 N Brand Blvd Ste 700, Glendale, CA, 91203. Phone: (917) 382-0901. Providers update this record themselves, so call before visiting.
How can I verify Calvin Chih-Chia Wu, M.D.'s license?
NPPES lists California license number A122403, 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 Calvin Chih-Chia Wu, M.D. prescribe under Medicare Part D?
In 2024, Calvin Chih-Chia Wu, M.D. had 49 Medicare Part D claims for 13 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.