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Dr. Derek Way-Jun Shek, MD
NPI1154448587PAC ID1456434844
- Medicare services, 2016
- 24
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 2,961
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Shek'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. Derek Way-Jun Shek is an internist in Richmond, California
Dr. Shek practices at Richmond Medical Center in Richmond, California.
Dr. Shek's NPI, 1154448587, was assigned on March 22, 2007. Dr. Shek graduated from McGaw Medical Center of Northwestern University in 2004. Dr. Shek holds California license A95144.
NPI and contact details
- NPI
- 1154448587NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456434844
- NPI enumeration date
- March 22, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Derek Way-Jun Shek practices at Richmond Medical Center in Richmond, California
Dr. Shek's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Derek Way-Jun Shek is affiliated with 2 sites of care and 1 medical group
Dr. Shek's primary practice is Richmond Medical Center in Richmond, California. Dr. Shek is also affiliated with San Leandro Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Richmond Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Derek Way-Jun Shek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shek practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond 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. Derek Way-Jun Shek is one of 16,751 internists in California
Internal medicine is Dr. Shek's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Shek is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists lung cancer and multiple myeloma among the conditions Dr. Shek treats.
Internists near Dr. Shek
Counts of internists 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. Derek Way-Jun Shek billed Medicare for 24 services in 2016
CMS data shows 24 Medicare services from Dr. Shek across 1 procedure code in 2016, all of them office visits, for 14 Medicare patients. Medicare paid $939 for them. Every service was in an office.
Medicare services, 201624
Medicare patients14
Paid by Medicare$939
Procedure codes1
Dr. Shek compared with the California median for internists, 2016
- Dr. Shek
- California median
- Medicare services
- 24vs 36193% below
- Medicare patients
- 14vs 15191% below
- Part D claims
- 2,615vs 4216.2 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Shek's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Shek?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shek and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Derek Way-Jun Shek treated 14 Medicare patients in 2024, average age 70
CMS counts 14 Medicare patients who saw Dr. Shek in 2024. Their average risk score is 2.28, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Shek's median patient age at 71, with 39% women.
Medicare patients, 202414
Average age70
Average risk score2.28
Dr. Shek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women39%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Derek Way-Jun Shek wrote 2,961 Medicare Part D claims in 2024
In 2024, Dr. Shek wrote 2,961 Medicare Part D claims for 360 patients. 78% of them were for generic drugs. CMS names the drug for 2,615 of them, across 45 drugs with 11 or more claims each, at $8,561,504 in total drug cost. In 2023, CMS named 2,653 claims across 50 drugs.
Part D claims, 20242,961
Drugs named by CMS45
Total drug cost$8.6M
Part D patients360
Dr. Shek's Part D claims by kind of drug, 2024
- Generic2,312 claims78%
- Brand-name and other649 claims22%
Dr. Shek'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. Shek's Part D claims, 2024
- Opioids4%130 of 2,961 claims
- Antibiotics1%36 of 2,961 claims
- Antipsychotics, patients 65 and over3%87 of 2,961 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: 2,6532024: 2,6151%
Drugs named by CMS: 45 in 2024, 50 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
Dr. Derek Way-Jun Shek offers telehealth to Medicare patients
Dr. Shek accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Shek as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Derek Way-Jun Shek has 2 publications on record
Dmand AI links 2 papers to Dr. Shek in 2012. Dr. Shek's most frequent co-author is Primo Nery Lara, MD.
Papers2
Dr. Shek's most frequent co-authors
Recent publications by Dr. Shek
See who Dr. Shek researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shek works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Derek Way-Jun Shek received $293 in industry payments from 2019 to 2022
CMS Open Payments shows 3 general payments to Dr. Shek from 2 drug and device companies from 2019 to 2022. Honoraria make up the largest share, 85% of the total. Novocure Inc. paid the most, $250.
General payments to Dr. Shek by program year, 2019 to 2022
General payments to Dr. Shek by kind, 2019 to 2022
$293in total
- Honoraria$25085%
- Food and beverage$4315%
Companies that paid Dr. Shek the most, 2019 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Derek Way-Jun Shek graduated from McGaw Medical Center of Northwestern University
Dr. Shek graduated from McGaw Medical Center of Northwestern University in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Derek Way-Jun Shek accepts plans from 2 insurance carriers
Dr. Shek is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Shek accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Derek Way-Jun Shek'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 DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Derek Way-Jun Shek
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. Derek Way-Jun Shek's NPI number?
Dr. Derek Way-Jun Shek's NPI number is 1154448587. It was assigned on March 22, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Derek Way-Jun Shek?
Dr. Derek Way-Jun Shek is an internist in Richmond, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Derek Way-Jun Shek practice?
Dr. Shek practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Shek's primary practice is Richmond Medical Center in Richmond, California.
What is Dr. Derek Way-Jun Shek's office phone number?
The practice phone on file for Dr. Shek is (510) 307-1555.
What is Dr. Derek Way-Jun Shek's medical license number?
Dr. Shek holds California license A95144.
Which hospitals is Dr. Derek Way-Jun Shek affiliated with?
Dr. Shek is affiliated with San Leandro Medical Center.
What medical group is Dr. Derek Way-Jun Shek part of?
Dr. Shek is linked to The Permanente Medical Group, Inc.
Does Dr. Derek Way-Jun Shek accept Medicare?
Yes. CMS data shows Dr. Shek billed Medicare for 24 services in 2016, and Dr. Shek accepts Medicare assignment.
Does Dr. Derek Way-Jun Shek offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Shek as offering telehealth services.
How many Medicare patients does Dr. Derek Way-Jun Shek see?
CMS counts 14 Medicare patients who saw Dr. Shek in 2024, with an average age of 70.
Show 8 more questionsShow fewer questions
What services does Dr. Derek Way-Jun Shek bill to Medicare?
In 2016, Dr. Shek's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Derek Way-Jun Shek go to medical school?
Dr. Shek graduated from McGaw Medical Center of Northwestern University in 2004.
What drugs does Dr. Derek Way-Jun Shek prescribe most?
In 2024 Medicare Part D data, Dr. Shek's most prescribed drugs by claims were Prednisone, Abiraterone Acetate and Tagrisso.
Has Dr. Derek Way-Jun Shek received payments from drug or device companies?
CMS Open Payments shows $293 in general payments to Dr. Shek from 2 companies from 2019 to 2022. The largest total came from Novocure Inc.
How long has Dr. Derek Way-Jun Shek been practicing?
Dr. Shek graduated from medical school in 2004, 22 years ago.
Does Dr. Derek Way-Jun Shek do research?
Dmand AI links 2 publications to Dr. Shek.
Who does Dr. Derek Way-Jun Shek publish with?
Dr. Shek's most frequent co-authors are Primo Nery Lara, MD (1 shared paper).
What insurance does Dr. Derek Way-Jun Shek accept?
Dr. Shek is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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