Katy Chien-Chien Young-Lee, MD
Internal Medicine Physician · Emeryville, CA
Katy Chien-Chien Young-Lee, MD is an internal medicine physician with a practice address in Emeryville, California, and NPI 1841259173, issued on Mar 23, 2006. Check the license (California A73200, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katy Chien-Chien Young-Lee
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73200 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5800 Hollis St, Emeryville, CA 94608
- Phone
- (510) 806-2100
- Enumerated
- Mar 23, 2006
- Record last updated
- Mar 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20100804000430); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 1999
- 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 5800 Hollis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Birnbaum, FNPNurse Practitioner1194355446
- Grace Eng, MDEndocrinology, Diabetes & Metabolism Physician1871552679
- Tara Farah, MDFamily Medicine Physician1851829642
- Julia Fellows, PA-CPhysician Assistant1568970838
- Victoria He, PHARM.D.Pharmacist1508207671
- Cory Hillis, AUDAudiologist1275151979
Verify Katy Chien-Chien Young-Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average internal medicine physician in 2024
5,738 Medicare Part D claims for 475 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 135 claims were for opioids.
Most prescribed
- Atorvastatin Calcium599 claims
- Amlodipine Besylate302 claims
- Lisinopril231 claims
- Rosuvastatin Calcium200 claims
- Losartan Potassium190 claims
- Levothyroxine Sodium187 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: $16.48
1 payment: food and beverage; the largest payer was Emd Serono, 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
- Sutter Bay Medical FoundationOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katy Chien-Chien Young-Lee among 17,696 internal medicine physician records in California
Katy Chien-Chien Young-Lee, MD 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
- Graduated1999 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
24 internal medicine physician records list a practice address in Emeryville
They are 24 of the 703 NPPES records with a practice address in Emeryville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Emeryville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Clay Angel, M.D.Emeryville, CA 946081477522548
- Nelson Bunin, MDEmeryville, CA 946081508812363
- Jose Camaro, M.D.Emeryville, CA 946081679532808
- Janet Ewing, MDEmeryville, CA 946081316987027
- Kou-Ying Hsieh, M.D.Emeryville, CA 946081447208731
- Curtis Johnson, M.D.Emeryville, CA 946081336118421
- Dean Nickles, MDEmeryville, CA 946081255390050
- Brian Roberts, M.D.Emeryville, CA 946081831158120
Common questions
What is Katy Chien-Chien Young-Lee, MD's NPI number?
Katy Chien-Chien Young-Lee, MD's National Provider Identifier (NPI) is 1841259173, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katy Chien-Chien Young-Lee, MD located?
The NPPES record lists a practice address at 5800 Hollis St, Emeryville, CA, 94608. Phone: (510) 806-2100. Providers update this record themselves, so call before visiting.
How can I verify Katy Chien-Chien Young-Lee, MD's license?
NPPES lists California license number A73200, 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 Katy Chien-Chien Young-Lee, MD prescribe under Medicare Part D?
In 2024, Katy Chien-Chien Young-Lee, MD had 5,738 Medicare Part D claims for 475 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.