Dr. Robyn E. Westlake, MD
- Part D claims, 2024
- 6,141
- Industry payments
- $128
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Westlake'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. Robyn E. Westlake is an internist in Stockton, California
Dr. Westlake practices at Permanente Medical Group Inc in Stockton, California.
Dr. Westlake's NPI, 1518045202, was assigned on November 1, 2006. Dr. Westlake graduated from George Washington University School of Medicine and Health Sciences in 2002. Dr. Westlake holds California license A84724.
- NPI
- 1518045202NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668493230
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robyn E. Westlake practices at Permanente Medical Group Inc in Stockton, California
Dr. Westlake's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robyn E. Westlake is affiliated with 2 sites of care and 1 medical group
Dr. Westlake's primary practice is Permanente Medical Group Inc in Stockton, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Westlake 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. Robyn E. Westlake's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Westlake practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robyn E. Westlake is one of 16,751 internists in California
Internal medicine is Dr. Westlake's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Westlake is board certified in internal medicine by the American Board of Internal Medicine. Dr. Westlake is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists muscle pain, fibromyalgia, and limb pain among the conditions Dr. Westlake treats.
Internists near Dr. Westlake
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. Robyn E. Westlake's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Westlake's median patient age at 60, with 73% women.
Dr. Westlake's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women73%
- Men27%
Source: Dmand AI Patient Panel Data
Dr. Robyn E. Westlake wrote 6,141 Medicare Part D claims in 2024
In 2024, Dr. Westlake wrote 6,141 Medicare Part D claims for 596 patients. 93% of them were for generic drugs. CMS names the drug for 5,492 of them, across 114 drugs with 11 or more claims each, at $185,229 in total drug cost. In 2023, CMS named 5,518 claims across 120 drugs.
Dr. Westlake's Part D claims by kind of drug, 2024
- Generic5,722 claims93%
- Brand-name404 claims7%
- Other15 claims0%
Dr. Westlake'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. Westlake's Part D claims, 2024
- Opioids3%202 of 6,141 claims
- Antibiotics4%232 of 6,141 claims
- Antipsychotics, patients 65 and over1%32 of 6,141 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: 5,5182024: 5,492No change
Drugs named by CMS: 114 in 2024, 120 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
How Dr. Robyn E. Westlake takes part in Medicare
Dr. Westlake accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Robyn E. Westlake received $128 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Westlake from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $128.
Companies that paid Dr. Westlake the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robyn E. Westlake has 1 award and honors on record
Dmand AI lists 1 award for Dr. Westlake, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Westlake
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Robyn E. Westlake graduated from George Washington University School of Medicine and Health Sciences
Dr. Westlake graduated from George Washington University School of Medicine and Health Sciences in 2002.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Robyn E. Westlake accepts plans from 1 insurance carrier
Dr. Westlake is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Westlake accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robyn E. Westlake'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Robyn E. Westlake
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. Robyn E. Westlake's NPI number?
Dr. Robyn E. Westlake's NPI number is 1518045202. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robyn E. Westlake?
Dr. Robyn E. Westlake is an internist in Stockton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robyn E. Westlake practice?
Dr. Westlake practices at 7373 West Ln, Stockton, CA 95210. Dr. Westlake's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Westlake to 1 group practice or clinic.
What is Dr. Robyn E. Westlake's office phone number?
The practice phone on file for Dr. Westlake is (209) 476-2000.
What is Dr. Robyn E. Westlake's medical license number?
Dr. Westlake holds California license A84724.
What medical group is Dr. Robyn E. Westlake part of?
Dr. Westlake is linked to The Permanente Medical Group, Inc.
Does Dr. Robyn E. Westlake accept Medicare?
Yes. CMS lists Dr. Westlake as accepting Medicare assignment.
Is Dr. Robyn E. Westlake board certified?
Yes. Dr. Westlake is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Robyn E. Westlake go to medical school?
Dr. Westlake graduated from George Washington University School of Medicine and Health Sciences in 2002.
What drugs does Dr. Robyn E. Westlake prescribe most?
In 2024 Medicare Part D data, Dr. Westlake's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Amlodipine Besylate.
Show 3 more questionsShow fewer questions
Has Dr. Robyn E. Westlake received payments from drug or device companies?
CMS Open Payments shows $128 in general payments to Dr. Westlake from 1 company from 2016 to 2016. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Robyn E. Westlake been practicing?
Dr. Westlake graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Robyn E. Westlake accept?
Dr. Westlake is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card