Douglas Pendleton Roy, M.D.
Internal Medicine Physician · Topanga, CA
Douglas Pendleton Roy, M.D. is an internal medicine physician with a practice address in Topanga, California, and NPI 1417025180, issued on Dec 1, 2006. Check the license (California G-037170, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Douglas Pendleton Roy
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G-037170 CA
Self-reported in NPPES; status is on the state search - Practice location
- 395 S. Topanga Cyn. Blvd., Topanga, CA 90290
- Phone
- (310) 455-2019
- Enumerated
- Dec 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 455-2010
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Douglas Pendleton Roy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G-037170Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
293 Medicare Part D claims for 51 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Alprazolam31 claims
- Tamsulosin Hcl21 claims
- Atorvastatin Calcium18 claims
- Amoxicillin-Clavulanate Potass14 claims
- Hydrochlorothiazide13 claims
- Zolpidem Tartrate13 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: $123.06
1 payment: food and beverage; the largest payer was Novo Nordisk 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.
Douglas Pendleton Roy among 17,696 internal medicine physician records in California
Douglas Pendleton Roy, M.D. 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 fileNo · 63% of these records are
- Record last updated2007 · 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).
3 internal medicine physician records list a practice address in Topanga
They are 3 of the 56 NPPES records with a practice address in Topanga, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Topanga → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Crystal Mattimore, M.D.Topanga, CA 902901114943842
- Gregory Skipper, M.D.Topanga, CA 902901720113418
- Gilmore Chung, M.D.Venice, CA 902911992027072
- Todd Feinman, M.D.Venice, CA 902911184783615
- Robert Heller, M.D.Venice, CA 902911295946804
- Beverly Karpman, M.D.Venice, CA 902911033278841
- Jose Quiroga, M.D.Venice, CA 902911477824449
- Gary Richwald, MDVenice, CA 902911750604666
Common questions
What is Douglas Pendleton Roy, M.D.'s NPI number?
Douglas Pendleton Roy, M.D.'s National Provider Identifier (NPI) is 1417025180, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Pendleton Roy, M.D. located?
The NPPES record lists a practice address at 395 S. Topanga Cyn. Blvd., Topanga, CA, 90290. Phone: (310) 455-2019. Providers update this record themselves, so call before visiting.
How can I verify Douglas Pendleton Roy, M.D.'s license?
NPPES lists California license number G-037170, 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 Douglas Pendleton Roy, M.D. prescribe under Medicare Part D?
In 2024, Douglas Pendleton Roy, M.D. had 293 Medicare Part D claims for 51 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.