Dr. Lay Lin Owyong, MD
- Part D claims, 2024
- 882
- Industry payments
- $12
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 825-3700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Manteca Medical Center
Stockton, California
Find Dr. Owyong's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Lay Lin Owyong is a hematologist and oncologist in Stockton, California
Dr. Owyong practices at Kaiser Permanente - Manteca Medical Center in Stockton, California.
Dr. Owyong's NPI, 1871667477, was assigned on November 17, 2006. Dr. Owyong graduated from University Institute of Medicine 1 in 1982. Dr. Owyong holds California license A54077.
- NPI
- 1871667477NPI Registry (opens in a new tab)
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Practice phone
- (209) 825-3700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Lay Lin Owyong practices at Kaiser Permanente - Manteca Medical Center in Stockton, California
Dr. Owyong's primary practice is Kaiser Permanente - Manteca Medical Center, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 825-3700.
- Kaiser Permanente - Manteca Medical Center7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 825-3700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Lay Lin Owyong is affiliated with 2 sites of care and 1 medical group
Dr. Owyong's primary practice is Kaiser Permanente - Manteca Medical Center in Stockton, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Owyong to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Lay Lin Owyong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Owyong practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Manteca Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lay Lin Owyong is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Owyong's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Owyong is board certified in medical oncology by the American Board of Internal Medicine. Dr. Owyong is licensed in California.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
Hematologists and oncologists near Dr. Owyong
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Lay Lin Owyong's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Owyong's median patient age at 64, with 0% women.
Dr. Owyong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Lay Lin Owyong wrote 882 Medicare Part D claims in 2024
In 2024, Dr. Owyong wrote 882 Medicare Part D claims for 254 patients. 86% of them were for generic drugs. CMS names the drug for 658 of them, across 20 drugs with 11 or more claims each, at $358,560 in total drug cost. In 2023, CMS named 794 claims across 22 drugs.
Dr. Owyong's Part D claims by kind of drug, 2024
- Generic761 claims86%
- Brand-name121 claims14%
Dr. Owyong's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Owyong's Part D claims, 2024
- Opioids14%127 of 882 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7942024: 65817%
Drugs named by CMS: 20 in 2024, 22 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Lay Lin Owyong received $12 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Owyong from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Neurocrine BioSciences, Inc. paid the most, $12.
Companies that paid Dr. Owyong the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lay Lin Owyong has 1 award and honors on record
Dmand AI lists 1 award for Dr. Owyong, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Owyong
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Lay Lin Owyong graduated from University Institute of Medicine 1
Dr. Owyong graduated from University Institute of Medicine 1 in 1982.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Lay Lin Owyong accepts plans from 1 insurance carrier
Dr. Owyong is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Lay Lin Owyong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Lay Lin Owyong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Lay Lin Owyong's NPI number?
Dr. Lay Lin Owyong's NPI number is 1871667477. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lay Lin Owyong?
Dr. Lay Lin Owyong is a hematologist and oncologist in Stockton, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Lay Lin Owyong practice?
Dr. Owyong practices at 7373 West Ln, Stockton, CA 95210. Dr. Owyong's primary practice is Kaiser Permanente - Manteca Medical Center in Stockton, California. Dmand AI also links Dr. Owyong to 1 group practice or clinic.
What is Dr. Lay Lin Owyong's office phone number?
The practice phone on file for Dr. Owyong is (209) 825-3700.
What is Dr. Lay Lin Owyong's medical license number?
Dr. Owyong holds California license A54077.
What medical group is Dr. Lay Lin Owyong part of?
Dr. Owyong is linked to The Permanente Medical Group, Inc.
Is Dr. Lay Lin Owyong board certified?
Yes. Dr. Owyong is board certified in medical oncology by the American Board of Internal Medicine.
Where did Dr. Lay Lin Owyong go to medical school?
Dr. Owyong graduated from University Institute of Medicine 1 in 1982.
What drugs does Dr. Lay Lin Owyong prescribe most?
In 2024 Medicare Part D data, Dr. Owyong's most prescribed drugs by claims were Anastrozole, Ondansetron HCl and Hydrocodone-Acetaminophen.
Has Dr. Lay Lin Owyong received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. Owyong from 1 company from 2018 to 2018. The largest total came from Neurocrine BioSciences, Inc.
How long has Dr. Lay Lin Owyong been practicing?
Dr. Owyong graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Lay Lin Owyong accept?
Dr. Owyong is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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